scholarly journals On the Role of Process Parameters on Meltpool Temperature and Tensile Properties of Stainless Steel 316L Produced by Powder Bed Fusion

2021 ◽  
Author(s):  
Mahyar Khorasani ◽  
Amir Hossein Ghasemi ◽  
Umar Shafique Awan ◽  
Sarat Singamneni ◽  
Guy Littlefair ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Tensile Properties ◽  
Process Parameters ◽  
Powder Bed Fusion ◽  
Stainless Steel 316L ◽  
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

Effect of processing parameters and strut dimensions on the microstructures and hardness of stainless steel 316L lattice-emulating structures made by powder bed fusion

2021 ◽  
Vol 40 ◽  
pp. 101943
Author(s):  
Cole Britt ◽  
Colt J. Montgomery ◽  
Michael J. Brand ◽  
Zi-Kui Liu ◽  
John S. Carpenter ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Processing Parameters ◽  
Powder Bed Fusion ◽  
Stainless Steel 316L ◽  
Powder Bed

scholarly journals Role of laser powder bed fusion process parameters in crystallographic texture of additive manufactured Nb-48Ti alloy

2021 ◽  
Author(s):  
Rafael de Moura Nobre ◽  
Willy Ank de Morais ◽  
Matheus Tavares Vasques ◽  
Jhoan Guzmán ◽  
Daniel Luiz Rodrigues Junior ◽  
...  
Keyword(s):  
Process Parameters ◽  
Crystallographic Texture ◽  
Fusion Process ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

scholarly journals Build position-based dimensional deviations of laser powder-bed fusion of stainless steel 316L

2021 ◽  
Vol 67 ◽  
pp. 58-68
Author(s):  
Jithin Kozhuthala Veetil ◽  
Mahyar Khorasani ◽  
AmirHossein Ghasemi ◽  
Bernard Rolfe ◽  
Ivo Vrooijink ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Stainless Steel 316L ◽  
Powder Bed

scholarly journals Controlling the porosity of 316L stainless steel parts manufactured via the powder bed fusion process

2019 ◽  
Vol 25 (1) ◽  
pp. 162-175 ◽  
Author(s):  
Abdullah AlFaify ◽  
James Hughes ◽  
Keith Ridgway
Keyword(s):  
Stainless Steel ◽  
Layer Thickness ◽  
Exposure Time ◽  
Process Parameters ◽  
Pulsed Laser ◽  
Powder Bed Fusion ◽  
Content Type ◽  
Powder Bed ◽  
Point Distance ◽  
Part Density

Purpose The pulsed-laser powder bed fusion (PBF) process is an additive manufacturing technology that uses a laser with pulsed beam to melt metal powder. In this case, stainless steel SS316L alloy is used to produce complex components. To produce components with acceptable mechanical performance requires a comprehensive understanding of process parameters and their interactions. This study aims to understand the influence of process parameters on reducing porosity and increasing part density. Design/methodology/approach The response surface method (RSM) is used to investigate the impact of changing critical parameters on the density of parts manufactured. Parameters considered include: point distance, exposure time, hatching distance and layer thickness. Part density was used to identify the most statistically significant parameters, before each parameter was analysed individually. Findings A clear correlation between the number and shape of pores and the process parameters was identified. Point distance, exposure time and layer thickness were found to significantly affect part density. The interaction between these parameters also critically affected the development of porosity. Finally, a regression model was developed and verified experimentally and used to accurately predict part density. Research limitations/implications The study considered a range of selected parameters relevant to the SS316L alloy. These parameters need to be modified for other alloys according to their physical properties. Originality/value This study is believed to be the first systematic attempt to use RSM for the design of experiments (DOE) to investigate the effect of process parameters of the pulsed-laser PBF process on the density of the SS316L alloy components.

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

2021 ◽  
pp. 142223
Author(s):  
L. Ávila Calderón ◽  
B. Rehmer ◽  
S. Schriever ◽  
A. Ulbricht ◽  
L.Agudo Jácome ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Creep Damage ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Stainless Steel 316L ◽  
Powder Bed ◽  
Damage Behavior

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.

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