WO2017063633A1 - Corrosion-resistant powder - Google Patents

Corrosion-resistant powder Download PDF

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Publication number
WO2017063633A1
WO2017063633A1 PCT/DE2016/100412 DE2016100412W WO2017063633A1 WO 2017063633 A1 WO2017063633 A1 WO 2017063633A1 DE 2016100412 W DE2016100412 W DE 2016100412W WO 2017063633 A1 WO2017063633 A1 WO 2017063633A1
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Prior art keywords
max
alloy
powder
components
maximum
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PCT/DE2016/100412
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German (de)
French (fr)
Inventor
Jutta KLÖWER
Christina Schmidt
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Vdm Metals International Gmbh
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Priority to DE112016004695.2T priority Critical patent/DE112016004695A5/en
Publication of WO2017063633A1 publication Critical patent/WO2017063633A1/en

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10—Formation of a green body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention relates to the use of a corrosion-resistant metal powder.
  • DE 21 21 481 relates to a sintered alloy and a method for producing the same.
  • the alloy contains iron, chromium, carbon and lead, and has a structure in which the lead is dispersed in the FeCr-C alloy matrix.
  • This sintered alloy should preferably be used for sliding bodies, piston rings or valve parts.
  • DE 600 28 853 T2 discloses a multilayer heat-resistant metal tube comprising a substrate of a heat-resistant metal and a clad-deposited layer of CrNiMo alloy deposited on at least one inner surface and an outer surface of the substrate raw material the alloy forming the overlay layer comprises (in% by weight):
  • the alloy further comprising as impurities
  • the invention has for its object to provide a corrosion-resistant powder, which has a high resistance to seawater and chloride-containing waters.
  • Powder of the composition (in% by weight):
  • the powder according to the invention preferably has the following composition (in% by weight):
  • the powder alloy should preferably be used for the additive production of components, in particular of corrosion-resistant components.
  • Additive manufacturing processes are also known in practice under the term 3D printing. This can be used to generate components that were previously designed by means of a computer in the form of CAD data.
  • Additive manufacturing also means terms such as generative manufacturing, rapid technology, rapid tooling, rapid prototyping or the like. General differences can be made here:
  • Alloy 31 has the general composition (in% by weight):
  • Alloy 926 has the general composition (in% by weight):
  • the composition of the invention is both seawater resistant and resistant to chloride-containing environments (e.g., road salt). In addition, the composition of the invention is also 100 percent dishwasher safe.
  • the powder used is a spherical powder with preferred powder sizes (particle sizes) between 50 and 150 ⁇ .
  • Si, Ti, Nb, Al, V, and Co serve to increase strength.
  • process-related levels of oxygen and nitrogen may be present.
  • Household items in which dishwasher safety is of importance and / or where acid and / or alkali resistance is required components of recreational craft which must be seawater resistant, Components of vehicles that must be resistant to road salt, components in industrial plants that must have corrosion resistance,

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Composite Materials (AREA)
  • Structural Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

Use of a corrosion-resistant powder composed of (in percent by weight): C maximum 0.02 %; S maximum 0.01 %; Cr 18 - 30 %; Ni 22 - 34 %; Mn 0.5 - 2 %; Si 0.1 - 0.5 %; Mo 6.0 - 7.5 %; Ti maximum 0.1 %; Nb maximum 0.1 %; Cu 0.5 - 1.5 %; P maximum 0.03 %; Al > 0 - 0.5 %; Mg maximum 0.008 %; SE maximum 0.08 %; W maximum 0.5 %; Co maximum 0.5 %; B > 0 - 0.008 %; the remainder consisting of Fe and process-related oxygen and nitrogen moieties; for components produced by additive manufacturing.

Description

Korrosionsbeständiges Pulver  Corrosion resistant powder
Die Erfindung betrifft die Verwendung eines korrosionsbeständigen Metallpulvers. The invention relates to the use of a corrosion-resistant metal powder.
Die DE 21 21 481 betrifft eine gesinterte Legierung sowie ein Verfahren zur Herstellung derselben. Die Legierung enthält Eisen, Chrom, Kohlenstoff und Blei und weist eine Struktur auf, in der das Blei in der FeCr-C-Legierungsmatrix dispergiert ist. Diese Sinterlegierung soll bevorzugt für Gleitkörper, Kolbenringe oder Ventilteile zum Einsatz gelangen. DE 21 21 481 relates to a sintered alloy and a method for producing the same. The alloy contains iron, chromium, carbon and lead, and has a structure in which the lead is dispersed in the FeCr-C alloy matrix. This sintered alloy should preferably be used for sliding bodies, piston rings or valve parts.
Durch die DE 30 15 897 ist eine verschleißfeste Sinterlegierung für Verbrennungsmotoren bekannt geworden, beinhaltend 0,5 bis 4,0 % C, 5,0 bis 30,0 % Cr, 1 ,5 bis 16,0 % Nb, 0,1 bis 4,0 % Mo, 0,1 bis 10,0 % Ni und 0,1 bis 5,0 % P. By DE 30 15 897 a wear-resistant sintered alloy for internal combustion engines has become known, including 0.5 to 4.0% C, 5.0 to 30.0% Cr, 1, 5 to 16.0% Nb, 0.1 to 4.0% Mo, 0.1 to 10.0% Ni and 0.1 to 5.0% P.
Der DE 600 28 853 T2 ist ein mehrschichtiges wärmebeständiges Metallrohr zu entnehmen, umfassend ein Substrat Rohrmaterial aus einem wärmebeständigen Metall und einer, mittels Auftragsschweißen aufgebrachten überlagerte Schicht aus einer CrNiMo-Legierung, die auf mindestens einer Innenfläche und einer Außenfläche des Substratrohmaterials gebildet wird, wobei die Legierung, die die Überlagerungsschicht bildet, umfasst (in Gew.-%): DE 600 28 853 T2 discloses a multilayer heat-resistant metal tube comprising a substrate of a heat-resistant metal and a clad-deposited layer of CrNiMo alloy deposited on at least one inner surface and an outer surface of the substrate raw material the alloy forming the overlay layer comprises (in% by weight):
Cr 46 - 49 % Cr 46 - 49%
Ni + Co 35 - 63 % Ni + Co 35 - 63%
Mo 0,5 - 5 % Mo 0.5 - 5%
wobei die Legierung ferner als Verunreinigungen umfasst the alloy further comprising as impurities
< 0,1 % Co <0.1% Co
< 0,3 % N  <0.3% N
< 1 ,5 % Si  <1, 5% Si
< 1 ,5 Mn  <1, 5 Mn
< 10 % Fe  <10% Fe
< 0,02 % P + S  <0.02% P + S
< 0,3 % O wobei die Gesamtmenge an Verunreinigungen auf nicht mehr als 10 % beschränkt ist und wobei die mittels Auftragsschweißen aufgebrachte überlagerte Schicht mittels Plasmapulverschweißen gebildet ist. <0.3% O wherein the total amount of impurities is limited to not more than 10%, and wherein the overlaid layer applied by build-up welding is formed by plasma powder welding.
Der Erfindung liegt die Aufgabe zugrunde, ein korrosionsbeständiges Pulver bereitzustellen, das eine hohe Beständigkeit gegen Seewasser sowie chloridhaltige Wässer aufweist. The invention has for its object to provide a corrosion-resistant powder, which has a high resistance to seawater and chloride-containing waters.
Die Aufgabe wird gelöst durch die Verwendung eines korrosionsbeständigenThe problem is solved by the use of a corrosion resistant
Pulvers der Zusammensetzung (in Gew.-%): Powder of the composition (in% by weight):
C max. 0,02 %  C max. 0.02%
S max. 0,01 %  S max. 0.01%
Cr 18 - 30 %  Cr 18 - 30%
Ni 22 - 34 %  Ni 22 - 34%
Mn 0,5 - 2 %  Mn 0.5 - 2%
Si 0,1 - 0,5 %  Si 0.1 - 0.5%
Mo 6,0 - 7,5 %  Mo 6.0 - 7.5%
Ti max. 0,1 %  Ti max. 0.1%
Nb max. 0,1 %  Nb max. 0.1%
Cu 0,5 - 1 ,5 %  Cu 0.5 - 1, 5%
P max. 0,03 %  P max. 0.03%
AI > 0 - 0,5 %  AI> 0 - 0.5%
Mg max. 0,008 %  Mg max. 0.008%
SE max. 0,08 %  SE max. 0.08%
W max. 0,5 %  W max. 0.5%
Co max. 0,5 %  Co max. 0.5%
B > 0 - 0,008 %  B> 0 - 0.008%
Fe Rest sowie prozessbedingte Gehalte an Sauerstoff und Stickstoff, für durch additive Fertigung erzeugte Komponenten.  Fe remainder as well as process-related contents of oxygen and nitrogen, for components produced by additive manufacturing.
Vorteilhafte Weiterbildungen des Erfindungsgegenstandes sind den Unteransprüchen zu entnehmen. Bevorzugt hat das erfindungsgemäße Pulver folgende Zusammensetzung (in Gew.-%): Advantageous developments of the subject invention can be found in the dependent claims. The powder according to the invention preferably has the following composition (in% by weight):
C max. 0,02 %  C max. 0.02%
S max. 0,01 %  S max. 0.01%
Cr 18 - 30 %  Cr 18 - 30%
Ni 22 - 34 %  Ni 22 - 34%
Mn 0,5 - 2 %  Mn 0.5 - 2%
Si 0,1 - 0,5 %  Si 0.1 - 0.5%
Mo 6,0 - 7,5 %  Mo 6.0 - 7.5%
Ti max. 0,1 %  Ti max. 0.1%
Nb max. 0,1 %  Nb max. 0.1%
Cu 0,5 - 1 ,5 %  Cu 0.5 - 1, 5%
P max. 0,03 %  P max. 0.03%
AI > 0 - 0,5 %  AI> 0 - 0.5%
Mg max. 0,008 %  Mg max. 0.008%
SE max. 0,08 %  SE max. 0.08%
W max. 0,5 %  W max. 0.5%
Co max. 0,5 %  Co max. 0.5%
B > 0 - 0,008 %  B> 0 - 0.008%
Fe Rest sowie prozessbedingte Gehalte an Sauerstoff und Stickstoff.  Fe remainder as well as process-related contents of oxygen and nitrogen.
Die Pulverlegierung soll bevorzugt für die additive Fertigung von Komponenten, insbesondere von korrosionsbeständigen Bauteilen, eingesetzt werden. The powder alloy should preferably be used for the additive production of components, in particular of corrosion-resistant components.
Additive Fertigungsverfahren sind in der Praxis auch unter dem Begriff 3D-Druck bekannt. Hiermit können Bauteile, die vorher mittels eines Rechners in Form von CAD-Daten entworfen worden sind, generiert werden. Additive manufacturing processes are also known in practice under the term 3D printing. This can be used to generate components that were previously designed by means of a computer in the form of CAD data.
Unter additiver Fertigung werden auch Begriffe wie generative Fertigung, Rapid Technologie, Rapid Tooling, Rapid Prototyping oder dergleichen verstanden. Allgemein unterschieden werden hier: Additive manufacturing also means terms such as generative manufacturing, rapid technology, rapid tooling, rapid prototyping or the like. General differences can be made here:
3D-Druck mit Pulver Selektives Lasersintern 3D printing with powder Selective laser sintering
Selektktives Laserschmelzen  Selective laser melting
Bevorzugte Legierungen, die für den erfindungsgemäßen Einsatz denkbar sind, sind Alloy 31 sowie Alloy 926. Preferred alloys which are conceivable for the use according to the invention are Alloy 31 and Alloy 926.
Alloy 31 hat die allgemeine Zusammensetzung (in Gew.-%): Alloy 31 has the general composition (in% by weight):
C 0-0,015%  C 0-0.015%
Si 0 - 0,3 %  Si 0 - 0.3%
Mn 0 - 2,0 %  Mn 0 - 2.0%
P 0 - 0,02 %  P 0 - 0.02%
S 0-0,1 %  S 0-0.1%
Cr 26 - 28,0 %  Cr 26 - 28.0%
Mo 6,0 - 7,0 %  Mo 6.0 - 7.0%
Ni 30 - 32,0 %  Ni 30 - 32.0%
N 0,15-0,25%  N 0.15-0.25%
Cu 1 ,0 - 1 ,4 %  Cu 1, 0 - 1, 4%
Fe Rest.  Fe rest.
Alloy 926 hat die allgemeine Zusammensetzung (in Gew.-%): Alloy 926 has the general composition (in% by weight):
C 0 - 0,02 %  C 0 - 0.02%
Si 0 - 0,5 %  Si 0 - 0.5%
Mn 0 - 1 ,0 %  Mn 0 - 1, 0%
P 0-0,3 %  P 0-0.3%
S 0 - 0,005 %  S 0 - 0.005%
Cr 20-21,0%  Cr 20-21.0%
Mo 6,0 - 6,8 %  Mo 6.0 - 6.8%
Ni 24,5 - 25,5 %  Ni 24.5 - 25.5%
N 0,18-0,2%  N 0.18-0.2%
Cu 0,8 - 1 ,0 %  Cu 0.8 - 1, 0%
Fe Rest. Sowohl Alloy 31 als auch Alloy 926 sind schmelzmetallurgisch erzeugte Metalllegierungen, die gute Beständigkeiten gegen Korrosion und Erosion aufweisen. Fe rest. Both Alloy 31 and Alloy 926 are melt metallurgically produced metal alloys that have good resistance to corrosion and erosion.
Derzeit besteht Bedarf an korrosionsbeständigem Pulver für additiv gefertigte Komponenten (3D-Druck). There is currently a need for corrosion-resistant powder for additively manufactured components (3D printing).
Im Gegensatz zu derzeit verwendeten Pulvern aus Edelstahl (z.B. Alloy 316) ist die erfindungsgemäße Zusammensetzung sowohl seewasserbeständig als auch beständig in chloridhaltiger Umgebung (z.B. Streusalz). Darüber hinaus ist die erfindungsgemäße Zusammensetzung auch zu 100 Prozent spülmaschinenfest. Unlike currently used stainless steel powders (e.g., Alloy 316), the composition of the invention is both seawater resistant and resistant to chloride-containing environments (e.g., road salt). In addition, the composition of the invention is also 100 percent dishwasher safe.
Das zum Einsatz gelangende Pulver ist ein sphärisches Pulver mit bevorzugten Pulvergrößen (Korngrößen) zwischen 50 und 150 μιη. The powder used is a spherical powder with preferred powder sizes (particle sizes) between 50 and 150 μιη.
Optionale Zusätze von C, B, Mn, P, Ca und Mg dienen der Verbesserung des Druckverhaltens und des Fließverhaltens. Optional additions of C, B, Mn, P, Ca and Mg serve to improve the pressure behavior and the flow behavior.
Optionale Zugaben an Si, Ti, Nb, AI, V und Co dienen der Steigerung der Festigkeit. Optional additions to Si, Ti, Nb, Al, V, and Co serve to increase strength.
Weitere optional einsetzbare Elemente SE, Zr, Hf, Ta, AI, Ce dienen zur Verbesserung der Korrosionsbeständigkeit bei höheren Temperaturen. Further optional elements SE, Zr, Hf, Ta, Al, Ce serve to improve the corrosion resistance at higher temperatures.
Darüber hinaus können prozessbedingte Gehalte von Sauerstoff und Stickstoff gegeben sein. In addition, process-related levels of oxygen and nitrogen may be present.
Mittels additiver Fertigung (3D-Druck) aus der erfindungsgemäßen Pulverlegierung hergestellte Bauteile werden wie folgt angegeben: Components produced by additive manufacturing (3D printing) from the powder alloy according to the invention are indicated as follows:
Haushaltsgegenstände, bei denen Spülmaschinenfestigkeit von Bedeutung ist und/oder bei denen Säure- und/oder Laugenbeständigkeit gefordert wird, Bauteile von Freizeitbooten, die seewasserbeständig sein müssen, Komponenten von Fahrzeugen, die unter Streusalz beständig sein müssen, Komponenten in Industrieanlagen, die Korrosionsbeständigkeit aufweisen müssen, Household items in which dishwasher safety is of importance and / or where acid and / or alkali resistance is required, components of recreational craft which must be seawater resistant, Components of vehicles that must be resistant to road salt, components in industrial plants that must have corrosion resistance,
Schrauben und Befestigungselemente im Outdoor-Bereich.  Screws and fasteners in the outdoor area.

Claims

Patentansprüche claims
1 . Verwendung eines korrosionsbeständigen Pulvers der Zusammensetzung (in Gew.-%): 1 . Use of a corrosion resistant powder of the composition (in% by weight):
C max. 0,02 %  C max. 0.02%
S max. 0,01 %  S max. 0.01%
Cr 18 - 30 %  Cr 18 - 30%
Ni 22 - 34 %  Ni 22 - 34%
Mn 0,5 - 2 %  Mn 0.5 - 2%
Si 0,1 - 0,5 %  Si 0.1 - 0.5%
Mo 6,0 - 7,5 %  Mo 6.0 - 7.5%
Ti max. 0,1 %  Ti max. 0.1%
Nb max. 0,1 %  Nb max. 0.1%
Cu 0,5 - 1 ,5 %  Cu 0.5 - 1, 5%
P max. 0,03 %  P max. 0.03%
AI > 0 - 0,5 %  AI> 0 - 0.5%
Mg max. 0,008 %  Mg max. 0.008%
SE max. 0,08 %  SE max. 0.08%
W max. 0,5 %  W max. 0.5%
Co max. 0,5 %  Co max. 0.5%
B > 0 - 0,008 %  B> 0 - 0.008%
Fe Rest sowie prozessbedingte Gehalte an Sauerstoff und Stickstoff, für durch additive Fertigung erzeugte Komponenten.  Fe remainder as well as process-related contents of oxygen and nitrogen, for components produced by additive manufacturing.
2. Verwendung nach Anspruch 1 , wobei die Legierung optional Zusätze von, einzeln oder in Kombination Ca, V, Zr, Hf, Ta, La, Ce enthält. 2. Use according to claim 1, wherein the alloy optionally contains additives of, singly or in combination Ca, V, Zr, Hf, Ta, La, Ce.
3. Verwendung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Legierung Alloy 31 ist. 3. Use according to claim 1 or 2, characterized in that the alloy is Alloy 31.
4. Verwendung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Legierung Alloy 926 ist. 4. Use according to claim 1 or 2, characterized in that the alloy is Alloy 926.
5. Verwendung nach einem der Ansprüche 1 bis 4 als sphärisches Pulver mit einer Pulvergröße zwischen 15 und 150 μιη. 5. Use according to one of claims 1 to 4 as a spherical powder with a powder size between 15 and 150 μιη.
6. Verwendung des Pulvers nach einem der Ansprüche 1 bis 5 für durch SD- Druck hergestellte Haushaltsgegenstände. 6. Use of the powder according to any one of claims 1 to 5 for household items produced by SD printing.
7. Verwendung des Pulvers nach einem der Ansprüche 1 bis 5 für durch SD- Druck hergestellte Bauteile von Freizeitbooten. 7. Use of the powder according to one of claims 1 to 5 for manufactured by SD pressure components of pleasure boats.
8. Verwendung des Pulvers nach einem der Ansprüche 1 bis 5 für durch SD- Druck hergestellte Komponenten von Fahrzeugen. 8. Use of the powder according to one of claims 1 to 5 for manufactured by SD printing components of vehicles.
9. Verwendung des Pulvers nach einem der Ansprüche 1 bis 5 für durch SD- Druck hergestellte Komponenten in Industrieanlagen. 9. Use of the powder according to one of claims 1 to 5 for manufactured by SD printing components in industrial plants.
10. Verwendung des Pulvers nach einem der Ansprüche 1 bis 5 für durch SD- Druck hergestellte Schrauben und Befestigungselemente, insbesondere im Outdoor-Bereich. 10. Use of the powder according to one of claims 1 to 5 for screws and fastening elements produced by SD printing, in particular in the outdoor area.
PCT/DE2016/100412 2015-10-15 2016-09-07 Corrosion-resistant powder WO2017063633A1 (en)

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CN111266569A (en) * 2020-02-19 2020-06-12 上海毅速激光科技有限公司 Novel 3D printing powder material and preparation process thereof
CN114226708A (en) * 2021-11-24 2022-03-25 恒新增材制造研究中心(佛山)有限公司 Steel powder for 3D printing and preparation method thereof

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CN111496245B (en) * 2020-04-30 2022-03-22 湖南瑞华新材料有限公司 High-corrosion-resistance powder material and preparation method and application thereof
CN111774564A (en) * 2020-07-13 2020-10-16 南京兴丞智能制造研究院有限公司 Metal additive manufacturing method and additive manufacturing material
WO2022243336A1 (en) * 2021-05-17 2022-11-24 Danmarks Tekniske Universitet Powder-based additive manufacturing of high-nitrogen stainless steels and austenitic nickel alloys
CN114959379B (en) * 2022-03-31 2023-04-25 华南理工大学 Heat-resistant high-strength aluminum alloy suitable for selective laser melting and preparation method thereof

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