Effect of quenching-partition time on wear resistance of a medium manganese steel

doi:10.13251/j.issn.0254-6051.2023.05.042

Abstract

Abstract: A medium manganese steel was treated by two-step quenching-partition process (Q&P). The microstructure evolution and wear resistance of the specimens were observed by means of OM, SEM, XRD and abrasive wear tester. Effect of quenching and partition time on microstructure and properties of the medium manganese steel was analyzed. The results show that the microstructure of the tested steel is mainly composed of lath martensite, massive martensite and retained austenite. When the partitioning time is extended from 5 min to 40 min, the retained austenite content first increases and then decreases, and reaches the maximum value after 20 min. The wear mechanism of the tested steel is mainly micro cutting. Under the smaller load, the wear resistance decreases with the increase of retained austenite content. Under the higher load, the wear resistance becomes better with the increase of retained austenite content.

Key words: quenching-partition, medium manganese steel, retained austenite, wear resistance

CLC Number:

TG142.1

Jia Juan, Jiang Xuan, Jiang Jianjiang, Song Xinli. Effect of quenching-partition time on wear resistance of a medium manganese steel[J]. Heat Treatment of Metals, 2023, 48(5): 270-274.

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