Precipitation behavior in V-N microalloyed CrSiMn low alloy cast steel

doi:10.13251/j.issn.0254-6051.2021.08.003

Abstract

Abstract: V-N microalloyed CrSiMn low alloy cast steel was calculated by means of JMatPro software, the equilibrium phase composition of the cast steel with different V contents was obtained. The precipitation behavior of each precipitated phases in the microalloyed steel at equilibrium state was emphatically studied. The results show that during the heating process, the increase of V content promotes the phase transformation resistance of ferritic to austenite. The V content has little influence on precipitation behavior of cementite and M₇C₃. The content of V has a great influence on precipitation of nitrides and carbonides. When V content increases from 0 to 0.18% (mass fraction), the initial precipitation temperature of nitrides and carbonides increases from 734.2 ℃ to 1133.93 ℃, and the mass fraction of the maximum precipitation amount increases from 0.07% to 0.24%.

Key words: microalloying, JMatPro, cast steel, precipitation behavior

CLC Number:

TG142.1

Wang Xiaodong, Chen Yunbo, Zuo Lingli, You Long, Chen Chong, Mao Feng, Zhang Junjia. Precipitation behavior in V-N microalloyed CrSiMn low alloy cast steel[J]. Heat Treatment of Metals, 2021, 46(8): 15-19.

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