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Tailoring the deformation behaviour of a medium Mn steel through isothermal intercritical annealing

Lookup NU author(s): Dr Peng Gong

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Abstract

A novel concept of varying the strain hardening rate of a medium Mn steel with 8 wt.% Mn by varying the duration of the intercritical anneal after hot rolling was explored. It was found that the stability of the austenite phase showed an inverse square root relationship with intercritical annealing duration and that the maximum strain hardening rate showed a linear relationship with austenite stability. The change in austenite stability was attributed to continuous Mn enrichment with increasing intercritical annealing duration. Twinned martensite was also found to be the most likely product of the martensitic transformation during deformation.

Publication metadata

Author(s): Xu X, Kwok TWJ, Gong P, Dye D

Publication type: Article

Publication status: Published

Journal: Materialia

Year: 2022

Volume: 22

Print publication date: 01/05/2022

Online publication date: 17/04/2022

Acceptance date: 09/04/2022

Date deposited: 23/03/2023

ISSN (electronic): 2589-1529

Publisher: Elsevier Ltd

URL: https://doi.org/10.1016/j.mtla.2022.101422

DOI: 10.1016/j.mtla.2022.101422

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