AUTHOR=Chen Xiaoman , Wang Yuhui , Xiong Jianchao , Li Guoyang , Tian Yanzhong , Cao Wenquan , Wang Tiansheng 

TITLE=Effect of Temperature on the Mechanical Properties and Deformation Mechanism of a High Mn Steel With Composite Structure

JOURNAL=Frontiers in Materials

VOLUME=7

YEAR=2020

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2020.00070

DOI=10.3389/fmats.2020.00070

ISSN=2296-8016

ABSTRACT=<p>A composite high manganese structure comprising recovered and recrystallized structures was prepared using a single-phase austenitic Fe-30Mn-0.14C-7Cr-0.26Ni steel by cold rolling and annealing. The yield strength and elongation of the composite increased simultaneously, when the tensile temperature decreased from room temperature (RT) to low temperature (−180°C). The composite structure exhibited a good combination of strength and ductility at RT and −180°C. The notable mechanical properties at low temperature can be attributed to the enhanced strain-hardening capability via introducing multiple deformation mechanisms in the composite structure.</p>