Effect of rare earth Ce on microstructure of 4Cr5MoSiV1 steel

doi:10.13251/j.issn.0254-6051.2023.03.040

Abstract

Abstract: The microstructure of 4Cr5MoSiV1 tested steel with different Ce content after hot-working treatment was observed and analyzed, and the effect of Ce content on its microstructure was studied. The results show that the addition of rare earth Ce can improve the microstructure of the 4Cr5MoSiV1 steel as-cast, and after hot forging, normalizing and spheroidizing annealing, refine the grain, modify the inclusion, reduce the composition segregation and eliminate the undissolved carbide. However, when the content of rare earth Ce exceeds 0.026%, the above improvement effect will gradually weaken and even worsen.

Key words: hot work die steel, 4Cr5MoSiV1 steel, rare earth Ce, microstructure

CLC Number:

TG151.2

Yang Lilin, Xu Qihao, Zhao Liping. Effect of rare earth Ce on microstructure of 4Cr5MoSiV1 steel[J]. Heat Treatment of Metals, 2023, 48(3): 242-247.

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