On the pitting behaviour of laser powder bed fusion prepared 316 L stainless steel upon post-processing heat treatments

2021 ◽  
pp. 110060
Author(s):  
Ke Wang ◽  
Qi Chao ◽  
Murugesan Annasamy ◽  
Peter D. Hodgson ◽  
Sebastian Thomas ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Heat Treatments ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Post Processing ◽  
Powder Bed ◽  
316 L Stainless Steel

Influence of powder recycling on 316 L stainless steel feedstocks and printed parts in laser powder bed fusion

2021 ◽  
pp. 102553
Author(s):  
Timothée Delacroix ◽  
Fernando Lomello ◽  
Frédéric Schuster ◽  
Hicham Maskrot ◽  
Jean-Paul Garandet
Keyword(s):  
Stainless Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
316 L Stainless Steel ◽  
Powder Recycling

scholarly journals Microstructure, Solidification Texture, and Thermal Stability of 316 L Stainless Steel Manufactured by Laser Powder Bed Fusion

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 643 ◽  
Author(s):  
Pavel Krakhmalev ◽  
Gunnel Fredriksson ◽  
Krister Svensson ◽  
Igor Yadroitsev ◽  
Ina Yadroitsava ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Stainless Steel ◽  
Laser Scanning ◽  
Scanning Speed ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
316 L Stainless Steel ◽  
Solidification Texture ◽  
Thermal Stability Of

This article overviews the scientific results of the microstructural features observed in 316 L stainless steel manufactured by the laser powder bed fusion (LPBF) method obtained by the authors, and discusses the results with respect to the recently published literature. Microscopic features of the LPBF microstructure, i.e., epitaxial nucleation, cellular structure, microsegregation, porosity, competitive colony growth, and solidification texture, were experimentally studied by scanning and transmission electron microscopy, diffraction methods, and atom probe tomography. The influence of laser power and laser scanning speed on the microstructure was discussed in the perspective of governing the microstructure by controlling the process parameters. It was shown that the three-dimensional (3D) zig-zag solidification texture observed in the LPBF 316 L was related to the laser scanning strategy. The thermal stability of the microstructure was investigated under isothermal annealing conditions. It was shown that the cells formed at solidification started to disappear at about 800 °C, and that this process leads to a substantial decrease in hardness. Colony boundaries, nevertheless, were quite stable, and no significant grain growth was observed after heat treatment at 1050 °C. The observed experimental results are discussed with respect to the fundamental knowledge of the solidification processes, and compared with the existing literature data.

scholarly journals Ultrasonic Nondestructive Evaluation of Laser powder bed fusion 316 L Stainless Steel

2021 ◽  
pp. 101800
Author(s):  
Changgong Kim ◽  
Houshang Yin ◽  
Andrii Shmatok ◽  
Barton C. Prorok ◽  
Xiaoyuan Lou ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Nondestructive Evaluation ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Ultrasonic Nondestructive Evaluation ◽  
Powder Bed ◽  
316 L Stainless Steel

scholarly journals Numerical prediction of grain structure formation during laser powder bed fusion of 316 L stainless steel

2021 ◽  
Vol 199 ◽  
pp. 109434
Author(s):  
Anaïs Baumard ◽  
Danièle Ayrault ◽  
Olivier Fandeur ◽  
Cyril Bordreuil ◽  
Frédéric Deschaux-Beaume
Keyword(s):  
Stainless Steel ◽  
Structure Formation ◽  
Numerical Prediction ◽  
Grain Structure ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
316 L Stainless Steel

scholarly journals Creep behavior of 316 L stainless steel manufactured by laser powder bed fusion

2021 ◽  
Vol 548 ◽  
pp. 152847 ◽  
Author(s):  
Meimei Li ◽  
Xuan Zhang ◽  
Wei-Ying Chen ◽  
T.S. Byun
Keyword(s):  
Stainless Steel ◽  
Creep Behavior ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
316 L Stainless Steel
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