Dynamic Strain Aging in the Fe-Mn-Cu-C TWIP Steels

Abstract:

Strain rate jump tests were performed on the Fe-Mn-Cu-C TWIP Steels to determine the strain rate sensitivity, and serrated plastic flow was observed in the stress-strain curves during tensile tests at different constant strain rates ranging from 2.5×10-4S-1 to 2.5×10-2S-1. The Fe-Mn-Cu-C TWIP Steels exhibit high work hardening rate and outstanding mechanical properties, The excellent mechanical properties are attributed to dynamic strain aging(DSA) effect, which result from the interaction between Mn(Cu)-C atom atmosphere, C-vacancy, C-C pairs and moving dislocations.

• Periodical: Advanced Materials Research (Volume 668)
• Pages: 861-864
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.668.861
• Online since: March 2013
• Authors: Hai Jun Liu, Ding Yi Zhu, Xian Peng, Zhen Ming Hu, Ming Jie Wang
• Keywords: DSA, Serrated Plastic Flow, Strain Rate Sensitivity, TWIP Steel

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