Quasi In-Situ Study of Microstructure in a Laser Powder Bed Fusion Martensitic Stainless Steel

Journal article (2024)

Authors

Ayda Shahriari University of New Brunswick
M. Sanjari University of New Brunswick, Natural Resources Canada
Mahdi Mahmoudiniya Universiteit Gent
Hadi Pirgazi Universiteit Gent
B. S. Amirkhiz Natural Resources Canada, University of New Brunswick
L.A.I. Kestens Team Maria Santofimia Navarro - Mechanical, Maritime and Materials Engineering , Universiteit Gent
Mohsen Mohammadi University of New Brunswick
Research Group
Team Maria Santofimia Navarro (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2024 Ayda Shahriari, Mehdi Sanjari, Mahdi Mahmoudiniya, Hadi Pirgazi, Babak Shalchi Amirkhiz, L.A.I. Kestens, Mohsen Mohammadi
DOI
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https://doi.org/10.1007/s11661-024-07353-4
More Info
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Published Date

2024

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Research Group

Team Maria Santofimia Navarro

Abstract

This study explores the evolution of solidification microstructure of a laser powder bed fusion (L-PBF) martensitic stainless steel during solution annealing and aging. Quasi in-situ experiments using electron backscatter diffraction (EBSD) revealed that the finer, more equiaxed microstructure below the melt pool was susceptible to recrystallization and grain growth during solution annealing. The two distinct solidification microstructures below and inside the melt pool converged into a uniform grain morphology after solution annealing and aging processes. Graphical Abstract: (Figure presented.)