Manipulating Retained Austenite Fraction and Stability With Controlled Chemical Heterogeneities in Q&P Steels

Thrun, Melissa; Clarke, Amy; Clarke, Kester

doi:10.1007/s11661-023-07233-3

Title: Manipulating Retained Austenite Fraction and Stability With Controlled Chemical Heterogeneities in Q&P Steels

Journal Article · 26 October 2023 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI: https://doi.org/10.1007/s11661-023-07233-3 · OSTI ID:2208796

Thrun, Melissa ^[1]; Clarke, Amy ^[1]; Clarke, Kester ^[1]

Colorado School of Mines, Golden, CO (United States)

Advanced high-strength steels go through complex heat treatment processes with the goal of retaining austenite to enhance the mechanical properties. Martensite start temperature predictions are generally based on bulk composition when designing heat treatments, so compositional heterogeneities are not considered. Here, the effects of compositional heterogeneities on retained austenite fractions in a quenching and partitioning steel are investigated. In conclusion, the results show that Mn banding from solidification can be used to change retained austenite fractions.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)

Grant/Contract Number:: 89233218CNA000001; 1752530

OSTI ID:: 2208796

Report Number(s):: LA-UR-23-24587

Journal Information:: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Vol. 55; ISSN 1073-5623

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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