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Materials 2018, 11(2), 253; https://doi.org/10.3390/ma11020253

A Fine Grain, High Mn Steel with Excellent Cryogenic Temperature Properties and Corresponding Constitutive Behaviour

1
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
2
National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, China
*
Author to whom correspondence should be addressed.
Received: 2 January 2018 / Revised: 31 January 2018 / Accepted: 31 January 2018 / Published: 7 February 2018
(This article belongs to the Section Structure Analysis and Characterization)
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Abstract

A Fe-34.5 wt % Mn-0.04 wt % C ultra-high Mn steel with a fully recrystallised fine-grained structure was produced by cold rolling and subsequent annealing. The steel exhibited excellent cryogenic temperature properties with enhanced work hardening rate, high tensile strength, and high uniform elongation. In order to capture the unique mechanical behaviour, a constitutive model within finite strain plasticity framework based on Hill-type yield function was established with standard Armstrong-Frederick type isotropic hardening. In particular, the evolution of isotropic hardening was determined by the content of martensite; thus, a relationship between model parameters and martensite content is built explicitly. View Full-Text
Keywords: high Mn steel; cryogenic temperature properties; product strength and uniform elongation; constitutive behaviour high Mn steel; cryogenic temperature properties; product strength and uniform elongation; constitutive behaviour
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Wang, Y.; Shi, B.; He, Y.; Zhang, H.; Peng, Y.; Wang, T. A Fine Grain, High Mn Steel with Excellent Cryogenic Temperature Properties and Corresponding Constitutive Behaviour. Materials 2018, 11, 253.

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