Fabrication of 316L stainless steel with TiN addition by vacuum laser powder bed fusion

•316L samples were fabricated in the vacuum L-PBF at the VED of 7 kJ/mm3 and higher.•The microhardness has an average level of 242 HV0.05.•The microhardness is not affected by the VED between 1.33 and 16.00 kJ/mm3.•The microhardness was improved by more than 30% when 5 wt% of TiN was added....

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Bibliographic Details
Published in:Optics and laser technology 2020-06, Vol.126, p.106116, Article 106116
Main Authors: Srisawadi, Sasitorn, Tanprayoon, Dhritti, Sato, Yuji, Tsukamoto, Masahiro, Suga, Tetsuo
Format: Article
Language:English
Subjects:
316L stainless steel
Additive manufacturing
Austenitic stainless steels
Microhardness
Microstructure
Powder beds
Vacuum selective laser melting
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Summary:•316L samples were fabricated in the vacuum L-PBF at the VED of 7 kJ/mm3 and higher.•The microhardness has an average level of 242 HV0.05.•The microhardness is not affected by the VED between 1.33 and 16.00 kJ/mm3.•The microhardness was improved by more than 30% when 5 wt% of TiN was added.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2020.106116