锻压技术

低温变形量及热处理制度对Cu-Cr-Zr合金组织性能的影响

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

作者：张恒阳代军徐坤和孙国辉淡婷马丽翠

单位：首都航天机械有限公司

关键词：低温变形量热处理钎焊 Cu-Cr-Zr合金微观组织力学性能

分类号：TG166.2

出版年,卷(期):页码：2022,47(11):214-221

摘要：

为了满足液体火箭发动机燃烧室内壁的使用需求，根据其生产工况，开展了Cu-Cr-Zr合金材料组织性能控制方面的基础研究。研究了不同低温变形量与热处理工艺以及钎焊与焊后热处理工艺对合金微观组织、显微硬度及力学性能等的影响。试验结果表明：Cu-Cr-Zr合金是一种典型的形变和析出复合强化的合金材料，热处理与变形对合金的组织性能影响较大，适当地增加低温变形量能够显著提高合金的力学性能；钎焊后，合金的强度和显微硬度显著降低，但是，合金钎焊后再进行热处理，可以使合金的性能得到部分恢复。研究结果为优化发动机燃烧室内壁的旋压变形及热处理工艺流程提供了理论支撑。

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.

基金项目：

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

参考文献：

[1]Butler D T, Pindera M J. Analysis of factors affecting the performance of RLV thrust cell liners[R]. Washington:NASA/CR，2004.

[2]Raj S V, Barrett C, Karthikeyan J,et al. Comparison of the cyclic oxidation behavior of cold sprayed CuCrAl-coated and uncoated GRCop-84 substrates for space launch vehicles[J]. Surface & Coatings Technology, 2007，201(16/17): 7222-7234.

[3]邹鹤飞，徐坤和，张芹梅，等. 运载火箭氢氧发动机推力室内壁用铜合金材料研究进展[J]. 航空制造技术，2015，(S2)：50-56.

Zou H F, Xu K H, Zhang Q M, et al. A review of copper alloy used in the liner wall of the main combustion chamber for the LHx/LOx engine of carrier rocket[J]. Aeronautical Manufacturing Technology, 2015, (S2): 50-56.

[4]Henry C D G I, David L E, William S L. Comparison of GRCop-84 to other Cu alloys with high thermal conductivities[J]. Journal of Materials Engineering and Performance, 2008, 17(4): 594-606.

[5]丁兆波，李怡. 国外大推力氢氧推力室制造技术现状与趋势[J]. 航空制造技术，2012，(2)：1-4,41.

Ding Z B, Li Y. Status and developing direction of foreign large LOX/LH2 thrust chamber manufacturing technology[J]. Aerospace Manufacturing Technology, 2012, (2): 1-4,41.

[6]刘瑞蕊，周海涛，周啸，等. 高强高导铜合金的研究现状及发展趋势[J]. 材料导报，2012，26(10)：100-105.

Liu R R, Zhou H T, Zhou X, et al. Present situation and future prospect of high-strength and high-conductivity Cu alloy[J]. Materials Review, 2012, 26(10): 100-105.

[7]李仁庚. 高强高导Cu(Cr)Zr系合金微结构设计与调控[D]. 大连：大连理工大学，2019.

Li R G. The Microstructural Design and Control of High Strength and High Electrical Conductivity Cu(Cr)Zr Alloys[D]. Dalian: Dalian University of Technology, 2019.

[8]白露. Cu-Cr-Zr合金的制备及其热处理工艺的研究[D]. 西安：西安理工大学，2014.

Bai L. Preparation and Heat Treatment Process of Cu-Cr-Zr Alloys[D]. Xi′an: Xi′an University of Technology, 2014.

[9]GB/T 228.1—2021，金属材料拉伸试验第1部分：室温试验方法[S].

GB/T 228.1—2021, Metallic materials—Tensile testing—Part 1: Method of test at room temperature[S].

[10]GB/T 4340.1—2009，金属材料维氏硬度试验第1部分：试验方法[S].

GB/T 4340.1—2009, Metallic materials—Vickers hardness test—Part 1: Test method[S].

[11]Ding Z Y, Jia S G, Zhao P F, et al. Hot deformation behavior of Cu-0.6Cr-0.03Zr alloy during compression at elevated temperatures[J]. Materials Science and Engineering A, 2013,570: 87-91.

[12]刘海斌，郑月红，喇培清，等. 轧制与时效处理对Cu-Cr-Zr合金组织和性能的影响[J]. 中国有色金属学报，2020，30(9)：2076-2083.

Liu H B, Zheng Y H, La P Q, et al. Effect of rolling and aging treatment on microstructure and properties for Cu-Cr-Zr alloy[J]. The Chinese Journal of Nonferrous Metals, 2020, 30(9): 2076-2083.

服务与反馈：

【文章下载】【加入收藏】