Effect of aging temperature on Cu-rich precipitates in Fe-Cu-Mn-Ni alloy studied by phase-field method

doi:10.13251/j.issn.0254-6051.2023.09.045

Abstract

Abstract: A phase-field model for simulating the microstructure evolution in the solid-state phase transformation of multi-component alloys was constructed by coupling the CALPHAD thermodynamic database. Taking Fe-Cu-Mn-Ni alloy as an example, the effect of aging temperature on the precipitation mechanism of Cu-rich precipitates was revealed from the kinetic point of view. The results show that the transformation of α to γ phase and the formation of B2 ring depend on the size of Cu-rich phase. In addition, the change of aging temperature results in the change of the morphology and precipitation mechanism of the Cu-rich phase. The higher the aging temperature, the shorter the precipitation time of the Cu-rich phase, the larger the volume fraction and radius of the Cu-rich phase, and the faster the reduction rate of the precipitated phase quantity.

Key words: phase-field method, Fe-Cu-Mn-Ni alloy, Cu-rich phase, solid-state phase transformation, aging temperature

CLC Number:

TG156.92

Wang Kanghong, Xu Yangyang. Effect of aging temperature on Cu-rich precipitates in Fe-Cu-Mn-Ni alloy studied by phase-field method[J]. Heat Treatment of Metals, 2023, 48(9): 265-270.

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