Transactions of Materials and Heat Treatment

Title：Influences of low temperature deformation amount and heat treatment system on microstructure and properties for Cu-Cr-Zr alloy

Authors： Zhang Heng Yang Daijun Xu Kunhe Sun Guohui Dan Ting Ma Licui

Unit： Capital Aerospace Machinery Corporation Limited

KeyWords： low temperature deformation amount heat treatment brazing Cu-Cr-Zr alloy microstructure mechanical properties

ClassificationCode：TG166.2

year,vol(issue):pagenumber：2022,47(11):214-221

Abstract：

In order to meet the use needs of combustion chamber inwall of liquid rocket engine, according to its production conditions, the basic research on the control of microstructure and properties for Cu-Cr-Zr alloy material was carried out, and the influences of different low temperature deformation amounts and heat treatment processes as well as brazing and post-welding heat treatment processes on the microstructure, microhardness and mechanical properties of the alloy were investigated. The experimental results show that Cu-Cr-Zr alloy is a typical alloy material reinforced by deformation and precipitation, and heat treatment and deformation have a great influence on the microstructure and properties of the alloy. The mechanical properties of the alloy can be significantly improved by appropriately increasing the low temperature deformation amount, and after brazing, the strength and microhardness of the alloy are significantly reduced. However, the properties of the alloy can be partially recovered by the heat treatment after brazing. Thus, the research results provide a theoretical support for optimizing the spinning deformation and the heat treatment process flow of the engine combustion chamber inwall.

Funds：

作者简介：张恒（1981-），男，硕士，高级工程师，E-mail：adv_mat@163.com；通信作者：阳代军（1968-），男，博士，研究员，E-mail：oyang6810@163.com

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