Effect of Cr content and heating temperature on decarburized layer of 60Si2Mn spring steel for high-speed rail spring

doi:10.13251/j.issn.0254-6051.2021.06.09

Abstract

Abstract: Through increasing Cr element content in the 60Si2Mn spring steel for fastener system of high-speed rail and analyzing its decarburization under different heating temperature, the influence of Cr element and heating temperature on microstructure and thickness of the decarburized layer on the spring steel were determined. The results show that the thickness of the decarburized layer under different heating temperatures is obviously reduced when increasing the Cr element content to >0.35%, and only partial decarburization exists when the heating temperture is above 900 ℃. At the same time, the thickness of the decarburized layer increases with the increase of heating temperature.

Key words: 60Si2Mn spring steel, corrosion-resistant element, heating temperature, decarburized layer, microstructure

CLC Number:

TG115

Bao Wanyao, Li Jinbo, Gao Xiuhua, Chen Hongwei, Li Shaojie, Wu Hongyan, Zhang Zhixin, Du Linxiu. Effect of Cr content and heating temperature on decarburized layer of 60Si2Mn spring steel for high-speed rail spring[J]. Heat Treatment of Metals, 2021, 46(6): 41-44.

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