Hot isostatic pressing preparation and heat treatment  of 30Cr13Cu4 powder stainless steel

doi:10.13251/j.issn.0254-6051.2023.12.021

Abstract

Abstract: Cu-bearing 30Cr13Cu4 stainless steel was prepared by hot isostatic pressing, and the effects of heat treatment parameters, including aging temperature and holding time, on the microstructure and properties of the material were studied. The results show that the microstructure is uniform with a relative density of 98.5%. With the increase of aging temperature, the amount of carbide precipitated on the matrix increases, and the carbides grow up gradually, accompanied by nano-ε-Cu phase precipitates, and the hardness of the material increases first and then decreases. Aged at low temperature and long holding time, the precipitated carbide has a greater secondary hardening effect. Aged at 520 ℃, the hardness of the alloy increases with the extension of holding time, and the hardness of the alloy held for 14 h is 52.1 HRC.

Key words: hot isostatic pressing, aging treatment, martensitic stainless steel, ε-Cu phase

CLC Number:

TG146

Liu Wenbin, Lai Zebiao, Lin Yizhen, Chen Jiaxin, Wu Wanqiu, Huang Xinkai. Hot isostatic pressing preparation and heat treatment of 30Cr13Cu4 powder stainless steel[J]. Heat Treatment of Metals, 2023, 48(12): 129-134.

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Hot isostatic pressing preparation and heat treatment of 30Cr13Cu4 powder stainless steel

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