Mechanical properties and microstructure evolution of 17-4 PH stainless steel processed by laser-powered bed fusion.
Date on Master's Thesis/Doctoral Dissertation
Mechanical Engineering, MS
Committee Co-Chair (if applicable)
Laser-Powder Bed Fusion; 17-4 PH Stainless Steel; Mechanical Properties; Microstructures; Water-Atomized
Laser powder bed fusion (L-PBF) is a potential manufacturing route for the production of tooling using different steel materials. However, there is a limited understanding of how the mechanical properties and microstructures of the L-PBF produced parts vary with change in powder type and process conditions. The current research studied the influence of L-PBF process parameters on mechanical properties and microstructures of 17-4PH stainless steel using gas and water-atomized powders. The results demonstrate the feasibility of using water-atomized powders as starting raw materials instead of typically used gas-atomized powders to fabricate parts in the L-PBF process at high energy densities.
Irrinki, Harish, "Mechanical properties and microstructure evolution of 17-4 PH stainless steel processed by laser-powered bed fusion." (2016). Electronic Theses and Dissertations. Paper 2408.