Effect of warm rolling temperature on microstructure and properties of  medium carbon Cr-Mo steel

doi:10.13251/j.issn.0254-6051.2020.06.004

Abstract

Abstract: Effect of warm rolling temperature on microstructure evolution and mechanical properties of medium carbon Cr-Mo steel was investigated by means of scanning electron microscope(SEM), electron backscattered diffraction(EBSD) and tensile tests. The results show that the increase of rolling temperature has a favorable effect on the uniform distribution of the microstructure. When the rolling temperature increases from 500 ℃ to 600 ℃, the grain size of ferrite increases from 0.424 μm to 0.490 μm, the grain size difference decreases, and the yield strength decreases from 1380 MPa to 1062 MPa. The experimental steel rolled at 550 ℃ has the best plasticity and the highest plastic product reaches 5816 MPa·%.

Key words: medium carbon Cr-Mo steel, warm rolling, microstructure evolution, mechanical properties

CLC Number:

Cao Kuo, Feng Yunli, Zhang Xinyue, Li Jie. Effect of warm rolling temperature on microstructure and properties of medium carbon Cr-Mo steel[J]. Heat Treatment of Metals, 2020, 45(6): 17-21.

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Effect of warm rolling temperature on microstructure and properties of medium carbon Cr-Mo steel

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