Stainless steel powder produced by a novel arc spray process

To accelerate the industrialization of metal additive manufacturing (AM), especially for powder-bed-based processes, there is a huge demand to develop alternative powder manufacturing methods for producing highquality metal powder. In this work, 17-4PH stainless steel powder was produced using a nov...

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Main Authors: Dehua Chen, Haneen Daoud, Florian Scherm, Bernd Klötzer, Christoph Hauck, Uwe Glatzel
Format: Article
Language:English
Published: Elsevier 2020-07-01
Series:Journal of Materials Research and Technology
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2238785420313429
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spelling doaj-7166f589b3af47c5bbc9d38efda9b0992020-11-25T03:00:25ZengElsevierJournal of Materials Research and Technology2238-78542020-07-019483148322Stainless steel powder produced by a novel arc spray processDehua Chen0Haneen Daoud1Florian Scherm2Bernd Klötzer3Christoph Hauck4Uwe Glatzel5Neue Materialien Bayreuth GmbH, Bayreuth, GermanyNeue Materialien Bayreuth GmbH, Bayreuth, GermanyMetals and Alloys, University of Bayreuth, Bayreuth, Germanybkl lasertechnik, Roedental, GermanyMBFZ toolcraft GmbH, Geogensgmuend, GermanyNeue Materialien Bayreuth GmbH, Bayreuth, Germany; Metals and Alloys, University of Bayreuth, Bayreuth, Germany; Corresponding author.To accelerate the industrialization of metal additive manufacturing (AM), especially for powder-bed-based processes, there is a huge demand to develop alternative powder manufacturing methods for producing highquality metal powder. In this work, 17-4PH stainless steel powder was produced using a novel gas atomization method based on arc spraying process. The morphology of the produced powder, as well as the mechanical properties of printed specimens using SLM, were characterized and tested. The obtained results were compared with a commercial 17-4PH steel powder and its SLM specimens. The particle size analysis demonstrated that this novel atomization method has the advantage of producing powder in small quantities with a high yield of fine particles by using commercially available wire. Arc-sprayed powder exhibited higher sphericity, smoother surface and absence of satellite particles compared to commercial powder. After SLM processing with optimal process parameters, specimen with a porosity less than 0.1% can be obtained using arc-sprayed powder, which was significantly lower than that of using commercial powder - exhibited a porosity of 2%. Specimens built with arc-sprayed nitrogen-atomized powder contained martensite phase with a small amount of retained austenite while the specimens built with commercial argon-atomized powder contained only martensitic structure. The presence of retained austenite phase enhanced the mechanical behavior of the printed specimens. Metallic powder, produced by arc spraying gas atomization method, is well suited and even preferred for additive manufacturing.http://www.sciencedirect.com/science/article/pii/S2238785420313429Powder productionSelective laser meltingArc spray17-4PH
collection DOAJ
language English
format Article
sources DOAJ
author Dehua Chen
Haneen Daoud
Florian Scherm
Bernd Klötzer
Christoph Hauck
Uwe Glatzel
spellingShingle Dehua Chen
Haneen Daoud
Florian Scherm
Bernd Klötzer
Christoph Hauck
Uwe Glatzel
Stainless steel powder produced by a novel arc spray process
Journal of Materials Research and Technology
Powder production
Selective laser melting
Arc spray
17-4PH
author_facet Dehua Chen
Haneen Daoud
Florian Scherm
Bernd Klötzer
Christoph Hauck
Uwe Glatzel
author_sort Dehua Chen
title Stainless steel powder produced by a novel arc spray process
title_short Stainless steel powder produced by a novel arc spray process
title_full Stainless steel powder produced by a novel arc spray process
title_fullStr Stainless steel powder produced by a novel arc spray process
title_full_unstemmed Stainless steel powder produced by a novel arc spray process
title_sort stainless steel powder produced by a novel arc spray process
publisher Elsevier
series Journal of Materials Research and Technology
issn 2238-7854
publishDate 2020-07-01
description To accelerate the industrialization of metal additive manufacturing (AM), especially for powder-bed-based processes, there is a huge demand to develop alternative powder manufacturing methods for producing highquality metal powder. In this work, 17-4PH stainless steel powder was produced using a novel gas atomization method based on arc spraying process. The morphology of the produced powder, as well as the mechanical properties of printed specimens using SLM, were characterized and tested. The obtained results were compared with a commercial 17-4PH steel powder and its SLM specimens. The particle size analysis demonstrated that this novel atomization method has the advantage of producing powder in small quantities with a high yield of fine particles by using commercially available wire. Arc-sprayed powder exhibited higher sphericity, smoother surface and absence of satellite particles compared to commercial powder. After SLM processing with optimal process parameters, specimen with a porosity less than 0.1% can be obtained using arc-sprayed powder, which was significantly lower than that of using commercial powder - exhibited a porosity of 2%. Specimens built with arc-sprayed nitrogen-atomized powder contained martensite phase with a small amount of retained austenite while the specimens built with commercial argon-atomized powder contained only martensitic structure. The presence of retained austenite phase enhanced the mechanical behavior of the printed specimens. Metallic powder, produced by arc spraying gas atomization method, is well suited and even preferred for additive manufacturing.
topic Powder production
Selective laser melting
Arc spray
17-4PH
url http://www.sciencedirect.com/science/article/pii/S2238785420313429
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AT florianscherm stainlesssteelpowderproducedbyanovelarcsprayprocess
AT berndklotzer stainlesssteelpowderproducedbyanovelarcsprayprocess
AT christophhauck stainlesssteelpowderproducedbyanovelarcsprayprocess
AT uweglatzel stainlesssteelpowderproducedbyanovelarcsprayprocess
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