Analysis of influencing factors on transverse impact properties of  rare earth H13 die steel

doi:10.13251/j.issn.0254-6051.2022.03.034

Abstract

Abstract: In order to explore the influence factors on transverse impact properties of the rare earth H13 die steel forgings, macrostructure analysis, microstructure analysis, SEM and EDS analysis of fracture surface were carried out on the riser end specimens of steel forgings. The results show that the macrostructure and microstructure (including banded structure, non-metallic inclusion and network carbide) of the H13 die steel with rare earth addition can meet the qualification requirements of various industry standards, and the purity of the steel is relatively high. The chain-like or network carbides precipitate along the grain boundary of the main deformation direction after simplex stretching, the large-scale liquidus carbides between dendrites, and the unwrought dendrite structure in the matrix are the main factors that seriously affect the transverse impact properties of the rare earth H13 die steel.

Key words: rare earth H13 die steel, transverse impact properties, isotropy, carbide, dendrite structure

CLC Number:

TG142.1

Li Kuo, Sun Mingyue, Xu Bin, Li Dianzhong. Analysis of influencing factors on transverse impact properties of rare earth H13 die steel[J]. Heat Treatment of Metals, 2022, 47(3): 181-185.

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Analysis of influencing factors on transverse impact properties of rare earth H13 die steel

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