Fracture toughness of 304L austenitic stainless steel produced by laser powder bed fusion

2021 ◽  
Vol 202 ◽  
pp. 114002
Author(s):  
Punit Kumar ◽  
Zhiguang Zhu ◽  
Sharon M.L. Nai ◽  
R.L. Narayan ◽  
U. Ramamurty
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

scholarly journals Tensile Properties of 21-6-9 Austenitic Stainless Steel Built Using Laser Powder-Bed Fusion

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4280
Author(s):  
Magnus Neikter ◽  
Emil Edin ◽  
Sebastian Proper ◽  
Phavan Bhaskar ◽  
Gopi Krishna Nekkalapudi ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Tensile Properties ◽  
Elevated Temperatures ◽  
High Strength ◽  
Industrial Applications ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Anisotropic Behavior ◽  
Powder Bed

Alloy 21-6-9 is an austenitic stainless steel with high strength, thermal stability at high temperatures, and retained toughness at cryogenic temperatures. This type of steel has been used for aerospace applications for decades, using traditional manufacturing processes. However, limited research has been conducted on this alloy manufactured using laser powder-bed fusion (LPBF). Therefore, in this work, a design of experiment (DOE) was performed to obtain optimized process parameters with regard to low porosity. Once the optimized parameters were established, horizontal and vertical blanks were built to investigate the mechanical properties and potential anisotropic behavior. As this alloy is exposed to elevated temperatures in industrial applications, the effect of elevated temperatures (room temperature and 750 °C) on the tensile properties was investigated. In this work, it was shown that alloy 21-6-9 could be built successfully using LPBF, with good properties and a density of 99.7%, having an ultimate tensile strength of 825 MPa, with an elongation of 41%, and without any significant anisotropic behavior.

Characterization of single crystalline austenitic stainless steel thin struts processed by laser powder bed fusion

2019 ◽  
Vol 163 ◽  
pp. 51-56 ◽  
Author(s):  
X. Wang ◽  
J.A. Muñiz-Lerma ◽  
O. Sanchez-Mata ◽  
M. Attarian Shandiz ◽  
N. Brodusch ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Single Crystalline ◽  
Powder Bed

Crystallographic orientation dependence of Charpy impact behaviours in stainless steel 316L fabricated by laser powder bed fusion

2021 ◽  
pp. 102104
Author(s):  
Xianglong Wang ◽  
Oscar Sanchez-Mata ◽  
Sıla Ece Atabay ◽  
Jose Alberto Muñiz-Lerma ◽  
Mohammad Attarian Shandiz ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Crystallographic Orientation ◽  
Charpy Impact ◽  
Orientation Dependence ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Stainless Steel 316L ◽  
Powder Bed
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