Microstructure and properties of low carbon corrosion-resistant die steel 0Cr13NiN

doi:10.13251/j.issn.0254-6051.2024.08.028

Abstract

Abstract: Microstructure and properties of low carbon corrosion-resistant die steel 0Cr13NiN under different heat treatment states were studied, and the mechanical properties and pitting resistance were compared with pre-hardened corrosion-resistant die steel 4Cr13. The results show that the annealed microstructure of the 0Cr13NiN steel is mainly composed of ferrite and carbides. Compared to pre-hardened 4Cr13 steel, pre-hardened 0Cr13NiN steel has better pitting resistance and toughness. The recommended pre-hardening heat treatment process for the 0Cr13NiN steel is quenching temperature of 980-1030 ℃, tempering temperature of 520-540 ℃, and tempering twice. The quenched microstructure is martensite +undissolved carbonitride + a small amount of retained austenite, and the tempered microstructure is tempered martensite +primary carbonitride + carbonitride.

Key words: corrosion-resistant die steel 0Cr13NiN, quenching, tempering, microstructure, mechanical properties, corrosion resistance

CLC Number:

TG142.7

Chen Jianli, Chu Baoshuai, Zhao Zhigang. Microstructure and properties of low carbon corrosion-resistant die steel 0Cr13NiN[J]. Heat Treatment of Metals, 2024, 49(8): 165-169.

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