Effect of heating time on surface oxidation and decarburization of 60Cr13 stainless steel cutting tools

doi:10.13251/j.issn.0254-6051.2025.01.004

Abstract

Abstract: Effect of different heating time (20, 40 min) on surface oxidation and decarburization of 60Cr13 stainless steel cutting tools at 1050 ℃ was studied. The results show that at heating temperature of 1050 ℃, a longer holding time results in severe internal oxidation and grain boundary oxidation on the surface of the 60Cr13 stainless steel cutting tools, with an oxide layer thickness of 15-17 μm. In addition, extending the heating time intensifies the oxidation reaction in high-temperature environments, the oxygen continuously diffuses into the interior of the steel, while the carbon atoms in steel migrate outward. Due to the diffusion rate of carbon atoms exceeding the oxidation rate, the surface decarburization process is intensified, reducing the carbon content in the surface layer, resulting in a decrease in the surface hardness of the 60Cr13 stainless steel cutting tools.

Key words: 60Cr13 stainless steel, cutting tool, heating time, oxidation, decarburization

CLC Number:

TG162.1

Ji Xianbin, Pan Jixiang, Li Zhaoguo, Wei Haixia, Qian Zhangxin. Effect of heating time on surface oxidation and decarburization of 60Cr13 stainless steel cutting tools[J]. Heat Treatment of Metals, 2025, 50(1): 31-35.

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