CN105200226A - Method for prolonging fatigue life of metal material - Google Patents
Method for prolonging fatigue life of metal material Download PDFInfo
- Publication number
- CN105200226A CN105200226A CN201510519940.6A CN201510519940A CN105200226A CN 105200226 A CN105200226 A CN 105200226A CN 201510519940 A CN201510519940 A CN 201510519940A CN 105200226 A CN105200226 A CN 105200226A
- Authority
- CN
- China
- Prior art keywords
- metal material
- fatigue life
- span
- metal
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
- Chemically Coating (AREA)
Abstract
The invention provides a method for prolonging the fatigue life of a metal material. Laser shock processing is performed on the material surface with a silicide ceramic coating to enable the high-amplitude residual compressive stress and high dislocation density to be formed on the material surface, and therefore the compactness of the surface coating and the bonding strength between the coating and a substrate can be improved; meanwhile, generation of cracks can be prevented, and the spreading rate of generated cracks is reduced; due to the fact that the high abrasive resistance, corrosion resistance and high temperature oxidation resistance of the metal material are simultaneously achieved, the fatigue life of the metal material on the high temperature condition is prolonged.
Description
Technical field
The invention belongs to field of laser processing, especially a kind of method improving the Metal Material Fatigue life-span.
Background technology
Laser impact intensified (LSP) is that one utilizes laser blast wave to carry out modification to material surface, improves the technology of the performances such as the antifatigue of material, wearing and tearing and stress corrosion.Its principle is that shockwave and the material of high-energy short-pulse laser induction interacts, and metal material surface formation plastic deformation layer, thus the performances such as the fatigue strength of metallic substance and hardness is improved, especially fatigue lifetime.This technology is widely applied in all trades and professions such as aviation, boats and ships, mechanical engineering, microelectronics, and this technology is mainly used in material modification, metal impact strengthening and is shaped at present, and the aspect such as nondestructive testing.
The method that current surface modification treatment improves the resistance of oxidation of material has a lot, as the preoxidation layer etc. under MCrAIY coating, calorized coating, silicide ceramics coating, low oxygen pressure.And silicide ceramics coating belongs to the one of polymeric coating material.Polymeric coating material is in recent years in the middle of machinery manufacturing industry and repair of machine industry, the purpose type material that quick fast development is got up and new technology.The mechanical component of single-material can be transformed into composite shape matl structure by it, take metal as matrix can bear the intensity of detail design, take macromolecule material coating as wear resistance, shock resistance and erosion resistance etc. that surface is used for improving part.
The patent No. is that the Chinese patent of CN102463130A discloses a kind of sol-gel method and prepares modification TiO
2the method of coating.The method is by TiO
2colloidal sol carries out 5 films to material, then cools after soak, finally carries out the TiO that anneal obtains again
2coating.The TiO that this method obtains
2coating has good thermostability, corrodibility and wear resistance, but it is poor to there is compactness, easily occurs the problem that tiny crack, coating and substrate combinating strength are lower.Even if repeatedly carry out improvement coating, also such problem cannot be avoided.
Summary of the invention
For Shortcomings in prior art, the invention provides a kind of method improving the Metal Material Fatigue life-span, material surface after silicide ceramics coating carries out laser impact intensified process again, its surface is made to form high-amplitude residual compressive stress and high dislocation desity, improve the compactness of top coat and the bonding strength of coating and matrix, simultaneously also can the spreading rate that cracked of the generation of Anti-cracking and reduction in advance, metallic substance has high-wearing feature simultaneously, corrosion stability, high temperature oxidation resistance, thus fatigue lifetime of metallic substance under improve hot conditions.
The present invention realizes above-mentioned technical purpose by following technique means.
Improve the method in Metal Material Fatigue life-span, comprise the steps:
(1) first metal is cleaned, then heat-treat, form metal oxide film in described metallic surface;
(2) silicon ester is added in alcohol and water mixing solutions, with acid or alkali as catalyzer, stirring makes it form colloidal sol, described colloidal sol is coated on metal that step (1) obtains, dry, form dissolved glue film, after thermal treatment, obtain ceramic coated metal surface, will obtain that silicide ceramics coated metal surfaces carries out polishing, polished finish;
(3) cleaned by the silicide ceramics coating metal that step (2) obtains, coat absorption layer after drying, absorption layer surface coverage transparent material carries out laser-impact as restraint layer, by impact zone surface cleaning, dry.
Suitable thermal treatment not only can obtain higher intensity and plasticity, when thermal treatment, material surface forms one deck sull simultaneously, it can improve the consistency of material and coating, thus cracking resistance line and the peel-ability of coating can be improved in high-temperature oxidation process, improve the resistance of oxidation of silicide ceramics coating.
Further, step (1) described heat treatment mode is the β phase transition temperature being measured metallic substance described in this by x-ray diffraction analysis, carries out double annealing thermal treatment, forms one deck continuous print TiO at described metal material surface
2with A1
2o
3mixed oxidization film.
Form one deck sull at material surface during annealing, this layer of oxide film plays the effect of transition layer when the process of silicide ceramics coating, increases the binding ability of matrix and silicide ceramics coating.
In such scheme, step (2) described silicon ester is tetraethoxy, and described alcohol is ethanol, and described acid is hydrochloric acid, sulfuric acid or nitric acid, and described alkali is sodium hydroxide.
In such scheme, the coating thickness of step (2) described colloidal sol is 0.3 ~ 0.4mm.
In such scheme, the absorber thickness described in step (3) is 0.1 ~ 0.15mm, and described restraint layer thickness is 3 ~ 4mm.
In such scheme, the absorption layer described in step (3) is pitch-dark or aluminium foil; Described restraint layer is water.
In such scheme, the output wavelength 1.064um of step (3) described laser, pulse width is 20ns, and pulsed laser energy is about 30J.
In such scheme, described metallic substance is Fe, Mg, Mg alloy, Al, Al alloy, Ti, Ti alloy, Cu, Cu alloy, Ni, Ni alloy, steel.
Beneficial effect of the present invention:
The innovation of surface treatment method of the present invention, is fully to combine laser impact intensified and feature that is silicide ceramics coating treatment process; The process of silicide ceramics coating obviously can improve the thermal fatigue property of material, but because the silicide ceramics coating hardness after process is higher, roughness increases, toughness is low, have impact on the fretting fatigue drag of material, and the high-amplitude residual compressive stress layer of laser-impact strong production effectively can improve the fretting fatigue life-span of material, and the unrelieved stress of formation is large compared with traditional shot-peening, and not by the restriction of design of part size, substantially do not change its roughness for after smooth piece surface strengthening.Therefore, this treatment process can comprehensively improve material wear ability, corrosion stability and high temperature oxidation resistance, thus improves the fretting fatigue life-span of part under hot conditions.
Embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
Embodiment 1
For TC11 titanium alloy, (TCll is nearly type alpha+beta diphasic titanium alloy, a kind of important aviation and aerospace material, it is high that this alloy has specific tenacity, middle warm nature can be good, corrosion resistance and good, the advantage such as lightweight, for compressor disc, part and the aircraft structure such as blade and drum barrel of aviation motivation).
1, with ultrasonic cleaner, the TC11 titanium alloy surface in dehydrated alcohol is cleaned, then TC11 titanium alloy is put into after heat treatment furnace regulates suitable temperature and heat-treat.The β phase transition temperature being measured this alloy by x-ray diffraction analysis is 1000 scholar 20 DEG C, carries out double annealing thermal treatment, i.e. 950 DEG C of insulation 1h, air cooling.580 DEG C of insulation 6h, air cooling.One deck continuous print TiO can be defined on its surface
2+ A1
2o
3mixed oxidization film, this film can strengthen the binding ability of silicide coating and matrix.
2, sol-gel method prepares silicide ceramics film.Incorporated by tetraethoxy in water and ethanol, and add hydrochloric acid as catalyzer, stir afterwards and make it form uniform solution, after treating its formation colloidal sol, be coated in the surface of material, thickness is greatly about 0.3mm.Then material being placed in loft drier regulates suitable temperature to carry out dry 2-6h, forms gel-film, eventually passes thermal treatment and obtain silicide ceramics coating.
3, wash the powder of surface adhesion with dehydrated alcohol off, then polished in the surface of carrying out after silicide ceramics coating, polished finish.
4, laser-impact process: clean with dehydrated alcohol or acetone the surface that will impact, coat thickness 0.1mm after drying pitch-dark as absorption layer, the current of 3mm carry out laser-impact as restraint layer.Then clean the pitch-dark of impact zone with dehydrated alcohol or acetone, and be placed on loft drier drying; In the laser impact intensified process of employing, laser output wavelength 1.064um, pulse width is 20ns, pulsed laser energy is about 30J, residual compressive stress is produced at material surface after laser intensify treatment, because residual compressive stress plays a part negative mean stress in fatigue loading, delay the germinating of fatigue cracking, thus add the fretting fatigue drag of titanium alloy.The surface residual stress of sample after laser-impact that silicide ceramics coating is not prepared on surface is-238MPa, and the surface residual stress of sample after laser-impact that silicide ceramics coating is prepared on surface is-627MPa.Under comparing, silicide ceramics coating improves residual compressive stress effectively, therefore adopts the method for the invention effectively can improve the work-ing life of TC11 titanium alloy in high temperature fatigue environment.
Example 2
For AZ91D magnesium alloy, (AZ91D magnesium alloy is nearly type alpha+beta two-phase magnesium alloy, the trolley parts such as the bearing circle on aircraft engine parts, aircraft ring frames, landing gear and missile component and automobile, panel board, transmission case, also have the shell of electronic product.Having higher specific tenacity, specific rigidity, is structured material the lightest in engineer applied; And there is good casting and cutting ability and very high absorbing and electromagnetic shielding characteristic).
1, with ultrasonic cleaner, the AZ91D Mg alloy surface in dehydrated alcohol is cleaned, then AZ91D magnesium alloy is put into after heat treatment furnace regulates suitable temperature and heat-treat; Namely at the temperature of 300 DEG C, be incubated 2 hours, air cooling afterwards, can define layer oxide film on its surface, and this oxide film can strengthen the binding ability of silicide coating and matrix.
2, sol-gel method prepares silicide ceramics film.Tetraethoxy is incorporated in water and ethanol, and add sodium hydroxide (NaOH) as catalyzer, stirring afterwards makes it form uniform solution, after treating its formation colloidal sol, be coated in the surface of material, thickness, greatly about 0.4mm, is then placed on material in loft drier and regulates suitable temperature to carry out dry 2-6h, form gel-film, eventually pass thermal treatment and obtain silicide ceramics coating.
3, wash the powder of surface adhesion with dehydrated alcohol off, then polished in the surface of carrying out after silicide ceramics coating, polished finish.
4, laser-impact process: clean with dehydrated alcohol or acetone the surface that will impact, coat thickness 0.15mm aluminium foil after drying as absorption layer, the current of 4mm carry out laser-impact as restraint layer; Then take aluminium foil off, with dehydrated alcohol or acetone cleaning aluminium foil region, and be placed on loft drier drying; In the laser impact intensified process of employing, laser output wavelength 1.064um, pulse width is 20ns, pulsed laser energy is about 30J, residual compressive stress is produced at material surface after laser intensify treatment, because residual compressive stress plays a part negative mean stress in fatigue loading, delay the germinating of fatigue cracking, thus add the fretting fatigue drag of magnesium alloy.The surface residual stress of sample after laser-impact that silicide ceramics coating is not prepared on surface is-152MPa, and the surface residual stress of sample after laser-impact that silicide coating is prepared on surface is-345MPa.Under comparing, silicide ceramics coating improves residual compressive stress effectively, therefore adopts root method of the present invention effectively can improve the work-ing life of AZ91D magnesium alloy in high temperature fatigue environment.
Described embodiment is preferred embodiment of the present invention; but the present invention is not limited to above-mentioned embodiment; when not deviating from flesh and blood of the present invention, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection scope of the present invention.
Claims (8)
1. improve the method in Metal Material Fatigue life-span, it is characterized in that, comprise the steps:
(1) first metal is cleaned, then heat-treat, form metal oxide film in described metallic surface;
(2) silicon ester is added in alcohol and water mixing solutions, with acid or alkali as catalyzer, stirring makes it form colloidal sol, described colloidal sol is coated on metal that step (1) obtains, dry, form dissolved glue film, after thermal treatment, obtain ceramic coated metal surface, will obtain that silicide ceramics coated metal surfaces carries out polishing, polished finish;
(3) cleaned by the silicide ceramics coating metal that step (2) obtains, coat absorption layer after drying, absorption layer surface coverage transparent material carries out laser-impact as restraint layer, by impact zone surface cleaning, dry.
2. the method improving the Metal Material Fatigue life-span as claimed in claim 1, it is characterized in that, step (1) described heat treatment mode is the β phase transition temperature that measured metallic substance described in this by x-ray diffraction analysis, carry out double annealing thermal treatment, form one deck continuous print TiO at described metal material surface
2with A1
2o
3mixed oxidization film.
3. the method improving the Metal Material Fatigue life-span as claimed in claim 1, it is characterized in that, step (2) described silicon ester is tetraethoxy, and described alcohol is ethanol, and described acid is hydrochloric acid, sulfuric acid or nitric acid, and described alkali is sodium hydroxide.
4. the method improving the Metal Material Fatigue life-span as claimed in claim 1, it is characterized in that, the coating thickness of step (2) described colloidal sol is 0.3 ~ 0.4mm.
5. the method improving the Metal Material Fatigue life-span as claimed in claim 1, it is characterized in that, the absorber thickness described in step (3) is 0.1 ~ 0.15mm, and described restraint layer thickness is 3 ~ 4mm.
6. the method improving the Metal Material Fatigue life-span as claimed in claim 5, it is characterized in that, the absorption layer described in step (3) is pitch-dark or aluminium foil; Described restraint layer is water.
7. the method improving the Metal Material Fatigue life-span as claimed in claim 1, it is characterized in that, the output wavelength 1.064um of step (3) described laser, pulse width is 20ns, and pulsed laser energy is about 30J.
8. as the method in the raising Metal Material Fatigue life-span in claim 1 ~ 7 as described in any one, it is characterized in that, described metallic substance is Fe, Mg, Mg alloy, Al, Al alloy, Ti, Ti alloy, Cu, Cu alloy, Ni, Ni alloy, steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519940.6A CN105200226A (en) | 2015-08-21 | 2015-08-21 | Method for prolonging fatigue life of metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519940.6A CN105200226A (en) | 2015-08-21 | 2015-08-21 | Method for prolonging fatigue life of metal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105200226A true CN105200226A (en) | 2015-12-30 |
Family
ID=54948179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510519940.6A Pending CN105200226A (en) | 2015-08-21 | 2015-08-21 | Method for prolonging fatigue life of metal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105200226A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222650A (en) * | 2016-07-29 | 2016-12-14 | 苏州大学张家港工业技术研究院 | The surface reinforcing method of laser-impact graphite oxide ene coatings |
| CN106399663A (en) * | 2016-09-12 | 2017-02-15 | 江苏大学 | Copious-cooling laser shock peening method and device based on laser-induced high-temperature plasma technology |
| CN108441770A (en) * | 2017-02-15 | 2018-08-24 | 麦格纳动力系有限公司 | Method using unimach forming member and the component by the method formation |
| CN109642583A (en) * | 2016-08-10 | 2019-04-16 | 西门子股份公司 | Layer system, impeller and production method |
| CN111235508A (en) * | 2020-02-02 | 2020-06-05 | 江苏大学 | Device and method for strengthening titanium alloy structure by hydrogen-assisted laser shock |
| CN114222643A (en) * | 2019-08-30 | 2022-03-22 | 山特维克科洛曼特公司 | Method of treating coated cutting tools |
| CN114959533A (en) * | 2022-06-22 | 2022-08-30 | 沈阳工业大学 | Laser shock peening method for improving depth and fatigue performance of compressive stress layer on surface of titanium alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6852179B1 (en) * | 2000-06-09 | 2005-02-08 | Lsp Technologies Inc. | Method of modifying a workpiece following laser shock processing |
| CN101698930A (en) * | 2009-10-09 | 2010-04-28 | 江苏大学 | Reinforcement method for extending fretting fatigue life of material at high temperature |
| CN103339288A (en) * | 2010-12-28 | 2013-10-02 | Posco公司 | Magnesium alloy with dense surface texture and surface treatment method thereof |
| CN103422098A (en) * | 2013-07-08 | 2013-12-04 | 江苏大学 | Modification method for improving surface nano indentation property of material |
-
2015
- 2015-08-21 CN CN201510519940.6A patent/CN105200226A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6852179B1 (en) * | 2000-06-09 | 2005-02-08 | Lsp Technologies Inc. | Method of modifying a workpiece following laser shock processing |
| CN101698930A (en) * | 2009-10-09 | 2010-04-28 | 江苏大学 | Reinforcement method for extending fretting fatigue life of material at high temperature |
| CN103339288A (en) * | 2010-12-28 | 2013-10-02 | Posco公司 | Magnesium alloy with dense surface texture and surface treatment method thereof |
| CN103422098A (en) * | 2013-07-08 | 2013-12-04 | 江苏大学 | Modification method for improving surface nano indentation property of material |
Non-Patent Citations (6)
| Title |
|---|
| DUHUA WANG, GORDON. P. BIERWAGEN: "Sol-gel coatings on metals for corrosion protection", 《PROGRESS IN ORGANIC COATINGS》 * |
| 多树旺等: "溶胶-凝胶制备的Al_2O_3-SiO_2复合陶瓷涂层抗原子氧侵蚀性能研究", 《稀有金属材料与工程》 * |
| 朱建龙等: "含硅有机-无机复合涂层对铝合金的保护作用", 《材料保护》 * |
| 涂伟萍: "《水性涂料》", 28 February 2006, 北京：化学工业出版社 * |
| 淮旭国等: "金属基表面Al_2O_3-SiO_2涂层耐腐蚀性能的研究", 《硅酸盐通报》 * |
| 胡保全，牛晋川: "《先进复合材料》", 31 May 2013, 北京：国防工业出版社 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222650A (en) * | 2016-07-29 | 2016-12-14 | 苏州大学张家港工业技术研究院 | The surface reinforcing method of laser-impact graphite oxide ene coatings |
| WO2018018655A1 (en) * | 2016-07-29 | 2018-02-01 | 苏州大学张家港工业技术研究院 | Surface strengthening method by laser shock on graphene or graphene oxide coating |
| CN109642583A (en) * | 2016-08-10 | 2019-04-16 | 西门子股份公司 | Layer system, impeller and production method |
| CN106399663A (en) * | 2016-09-12 | 2017-02-15 | 江苏大学 | Copious-cooling laser shock peening method and device based on laser-induced high-temperature plasma technology |
| CN106399663B (en) * | 2016-09-12 | 2019-01-08 | 江苏大学 | A kind of deep cooling laser shock peening method and device based on induced with laser high-temperature plasma body technique |
| CN108441770A (en) * | 2017-02-15 | 2018-08-24 | 麦格纳动力系有限公司 | Method using unimach forming member and the component by the method formation |
| CN114222643A (en) * | 2019-08-30 | 2022-03-22 | 山特维克科洛曼特公司 | Method of treating coated cutting tools |
| CN111235508A (en) * | 2020-02-02 | 2020-06-05 | 江苏大学 | Device and method for strengthening titanium alloy structure by hydrogen-assisted laser shock |
| CN111235508B (en) * | 2020-02-02 | 2021-06-22 | 江苏大学 | Device and method for strengthening titanium alloy structure by hydrogen-assisted laser shock |
| CN114959533A (en) * | 2022-06-22 | 2022-08-30 | 沈阳工业大学 | Laser shock peening method for improving depth and fatigue performance of compressive stress layer on surface of titanium alloy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105200226A (en) | Method for prolonging fatigue life of metal material | |
| CN101698930B (en) | Reinforcement method for extending fretting fatigue life of material at high temperature | |
| CN103422098B (en) | A kind of method of modifying improving material surface nano property | |
| Yang et al. | Fatigue behaviors of foreign object damaged Ti-6Al-4V alloys under laser shock peening | |
| Han et al. | Effects of aluminizing and combined strengthening on the fatigue property of K403 superalloy component under combined high and low cycle loading | |
| Praveenkumar et al. | Residual stress distribution and elevated temperature fatigue behaviour of laser peened Ti-6Al-4V with a curved surface | |
| CN112063951A (en) | Magnesium-aluminum alloy surface laser cladding self-lubricating coating and construction method thereof | |
| Tan et al. | Effects of different mechanical surface treatments on surface integrity of TC17 alloys | |
| Zhan et al. | Effects of texture spacing and bulges of bionic sinusoidal texture on the adhesion properties and fracture mechanism of plasma-sprayed coatings | |
| JP5867332B2 (en) | Aluminum alloy wear-resistant member and method for producing the same | |
| Dai et al. | A review on the fatigue performance of micro-arc oxidation coated Al alloys with micro-defects and residual stress | |
| CN102140644A (en) | Method for changing material surface nano property | |
| CN111020557B (en) | Ceramic-based buffer thermal insulation layer assisted magnesium alloy surface laser cladding composite coating and preparation method thereof | |
| CN108517519B (en) | Method for improving corrosion resistance of Al-Zn-Mg aluminum alloy friction stir welding joint through laser treatment | |
| CN110983257A (en) | Surface treatment method for improving corrosion resistance and anti-icing performance of titanium alloy surface | |
| CN107289446B (en) | A kind of aluminum alloy burner head and its manufacturing method and a kind of burner | |
| CN103710694B (en) | A kind of preparation method of light metal surface compound coat | |
| CN114507853A (en) | Laser cladding preparation method of magnesium alloy surface gradient ceramic composite coating | |
| CN114411145A (en) | Method for reducing stainless steel surface cladding coating cracks under high-temperature service | |
| CN104496181A (en) | Film structure of 316L alloy steel surface enamel coating | |
| JPH11131206A (en) | Powder material for thermal spraying coating and high temperature member using the same | |
| CN109518124B (en) | Surface modification method for bearing rolling body | |
| Prakash et al. | Laser Microtexturing of NiCrAlY Coated Nickel-based Superalloy for Improved Adhesion Bond Strength. | |
| Manoj et al. | A review-black oxide coating on metal substrates of steels, aluminium, magnesium and copper | |
| JP3779228B2 (en) | Ni-base high-temperature strength member and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |