Effect of heat treatment process on microstructure and hardness of 0Cr13 cold-drawn wire

doi:10.13251/j.issn.0254-6051.2020.07.021

Abstract

Abstract: Effect of heat treatment process on the microstructure and hardness of 0Cr13 cold-drawn wire was studied by Leica DM2500 optical microscope and MICROMET 5104 Vickers hardness tester. The results reveal that the cold-drawn 0Cr13 stainless steel wire is recrystallized after heating at 750-830 ℃ for 2 min, and the recrystallization is completed after heating at 845-880 ℃ for 1 min. So with the increase of holding temperature, the recrystallization time shortens gradually. But the martensite is prone to form during the air cooling when holding at up to 920 ℃, and the content of martensite is increased with the increase of heating temperature. The optimum heat treatment process is holding for 1 min at 845-880 ℃, and the hardness of the tested material is about 130-140 HV0.1 when the crystallization is finished.

Key words: heat treatment process, 0Cr13 steel, microstructure, hardness

CLC Number:

TG142.71

Duan Luzhao, Cui Juan. Effect of heat treatment process on microstructure and hardness of 0Cr13 cold-drawn wire[J]. Heat Treatment of Metals, 2020, 45(7): 97-100.

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