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Deformation and Fracture Behavior of Additively Manufactured 316L Stainless Steel
Abstract
Tensile deformation and fracture behavior of an additively manufactured (AM) 316L stainless steel (SS) in the as-built, stress-relieved, and solution-annealed conditions was investigated using in situ tensile testing in a scanning electron microscope with an electron back scattering diffraction (SEM–EBSD) detector. Analyses were performed to discuss the characteristic deformation and fracture process of the fine-grained AM 316L SS with and without relaxation heat treatment. The as-built 316L showed the highest strength, and both post-build heat treatments lowered the strength of the alloy. Regardless of the post-build processing, the AM 316L SS showed overall higher strength but slightly lower ductility when compared to the wrought (WT) 316L SS. Analysis of EBSD data indicated that the characteristic microstructural features from AM, such as the complex and fine grain morphology, dislocation network, pores, and silicon-rich oxides, evolved and exerted various roles during the tensile deformation and fracture processes. Further, it was obvious that the interaction of dislocation slips with oxide particles and cavities (or pores) resulted in an accelerated cracking in AM 316L SS. Overall, however, their influence on mechanical behavior was limited, as the genuinely high ductility of 316L SS could help avoid any premature or brittle fracture.
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 2278908
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- JOM. Journal of the Minerals, Metals & Materials Society
- Additional Journal Information:
- Journal Volume: 76; Journal Issue: 1; Journal ID: ISSN 1047-4838
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Byun, Thak Sang, Gussev, Maxim N., and Lach, Timothy G. Deformation and Fracture Behavior of Additively Manufactured 316L Stainless Steel. United States: N. p., 2023.
Web. doi:10.1007/s11837-023-06224-4.
Byun, Thak Sang, Gussev, Maxim N., & Lach, Timothy G. Deformation and Fracture Behavior of Additively Manufactured 316L Stainless Steel. United States. https://doi.org/10.1007/s11837-023-06224-4
Byun, Thak Sang, Gussev, Maxim N., and Lach, Timothy G. Fri .
"Deformation and Fracture Behavior of Additively Manufactured 316L Stainless Steel". United States. https://doi.org/10.1007/s11837-023-06224-4.
@article{osti_2278908,
title = {Deformation and Fracture Behavior of Additively Manufactured 316L Stainless Steel},
author = {Byun, Thak Sang and Gussev, Maxim N. and Lach, Timothy G.},
abstractNote = {Tensile deformation and fracture behavior of an additively manufactured (AM) 316L stainless steel (SS) in the as-built, stress-relieved, and solution-annealed conditions was investigated using in situ tensile testing in a scanning electron microscope with an electron back scattering diffraction (SEM–EBSD) detector. Analyses were performed to discuss the characteristic deformation and fracture process of the fine-grained AM 316L SS with and without relaxation heat treatment. The as-built 316L showed the highest strength, and both post-build heat treatments lowered the strength of the alloy. Regardless of the post-build processing, the AM 316L SS showed overall higher strength but slightly lower ductility when compared to the wrought (WT) 316L SS. Analysis of EBSD data indicated that the characteristic microstructural features from AM, such as the complex and fine grain morphology, dislocation network, pores, and silicon-rich oxides, evolved and exerted various roles during the tensile deformation and fracture processes. Further, it was obvious that the interaction of dislocation slips with oxide particles and cavities (or pores) resulted in an accelerated cracking in AM 316L SS. Overall, however, their influence on mechanical behavior was limited, as the genuinely high ductility of 316L SS could help avoid any premature or brittle fracture.},
doi = {10.1007/s11837-023-06224-4},
journal = {JOM. Journal of the Minerals, Metals & Materials Society},
number = 1,
volume = 76,
place = {United States},
year = {Fri Nov 03 00:00:00 EDT 2023},
month = {Fri Nov 03 00:00:00 EDT 2023}
}
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