Microstructure and mechanical properties of Mo-Nb microalloyed medium Manganese trip Steel by cyclic quenching

Metallurgical & Materials Engineering

article

Chunquan Liu¹  Qichun Peng¹  Zhengliang Xue¹ 

[1] The State Key Laboratory of Refractories and Metallurgy, Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology

关键词: medium Mn steel;    Mo-Nb microalloyed;    cyclic quenching;    austenite reverse transformation;    austenite stability;   

DOI  :  10.30544/426

学科分类：医学（综合）

来源: Association of Metallurgical Engineers of Serbia

【 摘 要 】

A novel cyclic quenching (CQ) and austenite reverse transformation (ART) was proposed for a Fe-0.25C-3.98Mn-1.22Al-0.20Si-0.19Mo-0.03Nb (wt.%) Mo-Nb microalloyed medium-Mn TRIP steel to improve strength and ductility. The results show that after twice cyclic quenching and ART exhibited optimum comprehensive properties, characterized by an ultimate tensile strength of 838 MPa, a total elongation of 90.8%, a product of strength and elongation (PSE) of 76.1 GPa·%, and the volume fraction of austenite of approximately 62 vol.%.

【 授权许可】

CC BY