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Meeting MS&T21: Materials Science & Technology
Symposium Additive Manufacturing: Alloy Design to Develop New Feedstock Materials III
Presentation Title Additive Manufacturing Feasibility Investigation Using Single Track Study for the Fabrication of Borated Austenitic Stainless Steels via Laser Powder Bed Fusion
Author(s) Abhishek Mehta, Devin D Imholte, Nicolas E Woolstenhulme, Daniel M Wachs, Yongho Sohn
On-Site Speaker (Planned) Abhishek Mehta
Abstract Scope Borated austenitic stainless steels can be used in nuclear applications for criticality control in fuel storage and reactivity control and flux adjustment in reactors. Single laser scans (SLS) were performed on the bulk S30465 and S30467 alloys to explore the feasibility to fabricate them using laser powder bed fusion (LPBF). SLS were performed as functions of laser power and scan speed. In S30465, melt-pools developed keyhole porosities at 200 W for low scan speeds (≤ 500 mm/s), but no flaws were observed at 350 W. In S30467, melt-pools developed keyhole porosities at 200 W for low scan speeds (≤ 300 mm/s), and a significant cracking was observed at 350 W. Dense and defect free solidification occurred for both alloys with the laser power of 200 W using intermediate scan speeds (700 – 1100 mm/s). Microstructure of the solidified melt-pool consisted of ultra-fine γ + (Cr,Fe)2B eutectic in continuous γ-phase matrix.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A High-throughput Method to Define New Feedstock Process Parameters in Additive Manufacturing
Additive Manufacturing Feasibility Investigation Using Single Track Study for the Fabrication of Borated Austenitic Stainless Steels via Laser Powder Bed Fusion
Development of Al-Ce Alloys for Additive Manufacturing Using the CALPHAD Method
Grain Boundary Engineering of 316L Stainless Steel via Laser Powder Bed Fusion
Insights into Additive Manufacturability and Microstructure Evolution from Simple Analytical Models
Solidification Cracking in Binary Al-Cu Alloys (1.5, 3.0, 4.5, 6.0, and 10 wt.% Cu) Additively Manufactured by Laser Powder Bed Fusion
Spherical Micro/Macro Indentation Stress-strain Curves for Additive Manufacturing Materials Design

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