Effect of austenitizing temperature on microstructure and properties of chromium and vanadium alloyed high manganese steel

doi:10.13251/j.issn.0254-6051.2023.06.016

Abstract

Abstract: Effect of austenitizing temperature on microstructure, mechanical properties, and wear resistance of chromium vanadium alloyed high manganese steel was investigated by means of optical microscope, scanning electron microscope, and MLD-10 dynamic load abrasive wear testing machine. The results show that at the austenitizing temperature of 1070 ℃, due to the presence of numerous point like carbides in the microstructure, the tensile strength, yield strength, and hardness of the tested steel reach their maximum values, which are 831 MPa, 460 MPa and 256.6 HBW, respectively. The impact absorbed energy is relatively high, reaching 70.9 J, and its fracture form is quasi cleavage fracture. During impact arrasive wear test process, as the impact energy increases, the wear resistance of the tested steel first increases and then decreases. Moreover, at higher impact energy, the tested steel exhibits better wear resistance when austenitized at 1070 ℃ compared to 1100 ℃.

Key words: high manganese steel, austenitizing temperature, microstructure, mechanical properties, wear resistance

CLC Number:

TG161

Yan Hongtao, Wang Yongjin, Liu Dandan, Qi Hailong, Yang Guang, Mu Rong. Effect of austenitizing temperature on microstructure and properties of chromium and vanadium alloyed high manganese steel[J]. Heat Treatment of Metals, 2023, 48(6): 89-94.

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