Microstructure dependent shear localization in 316L SS

Journal Article · 26 September 2023 · AIP Conference Proceedings

DOI: https://doi.org/10.1063/12.0020443 · OSTI ID:2246839

Anghel, Veronica ^[1]; Trujillo, Carl P. ^[2]; Martinez, Ramon M. ^[1]; Bennett, Jillian P. ^[3]

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1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Center for Integrated Nanotechnologies (CINT)
2. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
3. Texas A & M University, College Station, TX (United States)

Shear localization is characterized by the concentration of plastic deformation within narrow bands of material and constitutes the precursor to failure in materials subjected to high strain rates. These bands have been observed experimentally, but classical continuum material models have not been able to fully capture their development. The aim of this research is to investigate the role of microstructural differences in the dynamic shear response of wrought and additively manufactured (AM) 316L SS. Compact Forced Simple Shear specimens for Digital Image Correlation (CFSS-DIC) of wrought and additively manufactured 316L SS were tested on a Split Hopkinson Pressure Bar (SHPB) in conjunction with infrared thermometry measurements. Results indicate that the microstructures of wrought and AM 316L SS exhibit differences that affect the shear response of this materials. In conclusion, CFSS-DIC samples tested on the SHPB did not exhibit recrystallization inside the shear region, fact confirmed by thermometry measurements.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: 89233218CNA000001
• OSTI ID: 2246839
• Report Number(s): LA-UR-22-31899; TRN: US2407789
• Journal Information: AIP Conference Proceedings, Vol. 2844, Issue 1; Conference: 22. Biennial APS Conference on Shock Compression of Condensed Matter, Anaheim, CA (United States), 10-15 Jul 2022; Related Information: https://pubs.aip.org/aip/acp/issue/2844/1; ISSN 0094-243X
• Publisher: American Institute of Physics (AIP)Copyright Statement
• Country of Publication: United States
• Language: English