Grain boundary α-phase precipitation and coarsening: Comparing laser powder bed fusion with as-cast Ti-6Al-4V

2022 ◽  
Vol 207 ◽  
pp. 114261
Author(s):  
Jianwen Liu ◽  
Kai Zhang ◽  
Yi Yang ◽  
Hao Wang ◽  
Yuman Zhu ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Phase Precipitation ◽  
Powder Bed ◽  
Α Phase

scholarly journals Strengthening control in laser powder bed fusion of austenitic stainless steels via grain boundary engineering

2021 ◽  
pp. 110246
Author(s):  
Hossein Eskandari Sabzi ◽  
Everth Hernandez-Nava ◽  
Xiao-Hui Li ◽  
Hanwei Fu ◽  
David San-Martín ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Powder Bed Fusion ◽  
Grain Boundary Engineering ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

scholarly journals On the Relevance of Volumetric Energy Density in the Investigation of Inconel 718 Laser Powder Bed Fusion

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 538 ◽  
Author(s):  
Fabrizia Caiazzo ◽  
Vittorio Alfieri ◽  
Giuseppe Casalino
Keyword(s):  
Surface Roughness ◽  
Energy Density ◽  
Process Parameters ◽  
Vickers Hardness ◽  
Powder Bed Fusion ◽  
Processing Conditions ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Fractional Density ◽  
Experimental Variation

Laser powder bed fusion (LPBF) can fabricate products with tailored mechanical and surface properties. In fact, surface texture, roughness, pore size, the resulting fractional density, and microhardness highly depend on the processing conditions, which are very difficult to deal with. Therefore, this paper aims at investigating the relevance of the volumetric energy density (VED) that is a concise index of some governing factors with a potential operational use. This paper proves the fact that the observed experimental variation in the surface roughness, number and size of pores, the fractional density, and Vickers hardness can be explained in terms of VED that can help the investigator in dealing with several process parameters at once.

Heat source model calibration for thermal analysis of laser powder-bed fusion

2020 ◽  
Vol 106 (7-8) ◽  
pp. 3367-3379 ◽  
Author(s):  
Shahriar Imani Shahabad ◽  
Zhidong Zhang ◽  
Ali Keshavarzkermani ◽  
Usman Ali ◽  
Yahya Mahmoodkhani ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Heat Source ◽  
Model Calibration ◽  
Source Model ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Heat Source Model ◽  
Powder Bed
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