期刊
COATINGS
卷 11, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/coatings11020216
关键词
additive manufacturing; selective laser melting; powder bed fusion; powder metallurgy; spark plasma sintering; metallic alloys; physical vapor deposition
资金
- Estonian Ministry of Education and Research
- Slovenian Research Agency Program [SS427]
- M-ERA [NET Duracer ETAG18012, P2-0263]
This study tested the performance of densified materials produced from gas-atomized pre-alloyed metallic powders under impact conditions using optimized spark plasma sintering parameters. Successful comparison of stainless steel using three different processes demonstrated the best possible performance of such materials.
With the increasing acceleration of three-dimensional (3D) printing (for example, powder bed fusion (PBF)) of metal alloys as an additive manufacturing process, a comprehensive characterization of 3D-printed materials and structures is inevitable. The purpose of this work was to test highly densified materials produced from gas-atomized pre-alloyed metallic powders, namely 316L, Ti6Al4V, AlSi10Mg, CuNi2SiCr, CoCr28Mo6, and Inconel718, under impact conditions. This was done to demonstrate the best possible performance of such materials. Optimized spark plasma sintering (SPS) parameters (pressure, temperature, heating rate, and holding time) are applied as a novel technique of powder metallurgy. The densification level, impact site (imprint) diameter and volume, and Vickers hardness were studied. The comparison of 316L stainless steel (1) sintered by the SPS process, (2) manufactured by PBF process, and (3) coated by the physical vapor deposition (PVD) process (thin layer of TiAlN) was successfully achieved.
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