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

Authors

Chunquan Liu 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, Wuhan 430081, China
Qichun Peng 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, Wuhan 430081, China
Zhengliang Xue 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, Wuhan 430081, China

DOI:

https://doi.org/10.30544/426

Keywords:

medium Mn steel, Mo-Nb microalloyed, cyclic quenching, austenite reverse transformation, austenite stability

Abstract

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.%.

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Published

2019-07-02

How to Cite

Liu, Chunquan, Qichun Peng, and Zhengliang Xue. 2019. “Microstructure and Mechanical Properties of Mo-Nb Microalloyed Medium Manganese Trip Steel by Cyclic Quenching”. Metallurgical and Materials Engineering 25 (2):139-46. https://doi.org/10.30544/426.

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Issue

Vol. 25 No. 2 (2019)

Section

Research

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Copyright (c) 2019 Chunquan Liu, Qichun Peng, Zhengliang Xue

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