Resolving the Martensitic Transformation in Q&amp;P Steels In-Situ at Dynamic Strain Rates Using Synchrotron X-ray Diffraction

Finfrock, Christopher B.; Ellyson, Benjamin; Becker, C. Gus; Copley, John; Fezzaa, Kamel; Parab, Niranjan; Sun, Tao; Kirk, Cody; Kedir, Nesredin; Chen, Weinong; Clarke, Amy; Clarke, Kester

doi:10.1007/s11661-022-06788-x

Resolving the Martensitic Transformation in Q&P Steels In-Situ at Dynamic Strain Rates Using Synchrotron X-ray Diffraction

Journal Article · Tue Aug 30 00:00:00 EDT 2022 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI:https://doi.org/10.1007/s11661-022-06788-x· OSTI ID:1888548

Finfrock, Christopher B. ^[1]; Ellyson, Benjamin ^[1]; Becker, C. Gus ^[1]; Copley, John ^[2]; Fezzaa, Kamel ^[3]; Parab, Niranjan ^[3]; Sun, Tao ^[4]; Kirk, Cody ^[5]; Kedir, Nesredin ^[5]; Chen, Weinong ^[5]; Clarke, Amy ^[1]; Clarke, Kester ^[1]

Colorado School of Mines, Golden, CO (United States)
Princeton Univ., NJ (United States)
Argonne National Lab. (ANL), Lemont, IL (United States)
Univ. of Virginia, Charlottesville, VA (United States)
Purdue Univ., West Lafayette, IN (United States)

Herein the dynamic deformation response of two quenching and partitioning (Q&P) steels was investigated using a high strain rate tension pressure bar and in-situ synchrotron radiography and diffraction. This allowed for concurrent measurements of the martensitic transformation, the elastic strains/stresses on the martensite and ferrite, and the bulk mechanical behavior. The steel with the greater fraction of ferrite exhibited greater ductility and lower strength, suggesting that dislocation slip in ferrite enhanced the deformability. Meanwhile, the kinetics of the martensitic transformation appeared similar for both steels, although the steel with a greater ferrite fraction retained more austenite in the neck after fracture.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); Advanced Steel Processing and Products Research Center (ASPPRC); Center for Advanced Non-Ferrous Structural Alloys (CANFSA); National Science Foundation (NSF)

Grant/Contract Number:: NA0003525; AC02-06CH11357

OSTI ID:: 1888548

Alternate ID(s):: OSTI ID: 1970367

Report Number(s):: SAND2022-10410J; 708800

Journal Information:: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 10 Vol. 53; ISSN 1073-5623

Publisher:: ASM InternationalCopyright Statement

Country of Publication:: United States

Language:: English

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Resolving the Martensitic Transformation in Q&P Steels In-Situ at Dynamic Strain Rates Using Synchrotron X-ray Diffraction

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