基于JMat-Pro计算的Al-Cu-Mn系耐热铸造合金的热处理

doi:10.13251/j.issn.0254-6051.2025.06.038

金属热处理 ›› 2025, Vol. 50 ›› Issue (6): 249-254.DOI: 10.13251/j.issn.0254-6051.2025.06.038

基于JMat-Pro计算的Al-Cu-Mn系耐热铸造合金的热处理

师可馨^1,2, 熊艳才¹, 洪润洲^1,2, 张喆^1,2

1.中国航发北京航空材料研究院, 北京 100095;
2.北京市先进铝合金材料及应用工程技术研究中心, 北京 100095

收稿日期:2024-12-20 修回日期:2025-03-08 出版日期:2025-06-25 发布日期:2025-07-08
作者简介:师可馨(1998—),女,硕士,助理工程师,主要研究方向为铸造镁/铝合金,E-mail: skx13041060477@163.com

Heat treatment of Al-Cu-Mn heat-resistant casting alloy based on JMat-Pro calculation

Shi Kexin^1,2, Xiong Yancai¹, Hong Runzhou^1,2, Zhang Zhe^1,2

1. AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
2. Beijing Advanced Engineering Technology and Application Research Center of Aluminum Materials, Beijing 100095, China

Received:2024-12-20 Revised:2025-03-08 Online:2025-06-25 Published:2025-07-08

摘要/Abstract

摘要： 利用JMat-Pro软件对Al-Cu-Mn合金进行热力学平衡相组成、相转变模拟计算,并测定其DSC曲线,在此基础上设计其固溶时效处理工艺,并测试了合金固溶时效处理后的室温和高温拉伸性能。JMat-Pro软件计算得到Al-Cu-Mn合金在室温条件下的析出相组成为θ-Al₂Cu、T-Al₂₀Cu₂Mn₃、S-Al₂CuMg、Al₃Ti、Al₃Zr、Al₃(Ti, V)。Al-Cu-Mn合金有效耐热相析出数量最多、强化效果最好的热处理制度为:(540±5) ℃×12 h固溶+(215±5) ℃×7~10 h时效,其间固溶冷却转移时间控制在8 s以内。经该工艺处理后,合金250、350 ℃高温抗拉强度分别达到340、282 MPa,屈服强度分别达到262、230 MPa,远超现有耐热铸造铝合金,达到高强度耐热铸造铝合金水平。

关键词: Al-Cu-Mn合金, JMat-Pro计算, 热处理工艺, 力学性能

Abstract: JMat-Pro software was used to simulate the thermodynamic equilibrium phase composition and phase transition of Al-Cu-Mn alloy, and the DSC curve was determined. Based on these, the solid solution and aging process was designed, and the tensile properties at room temperature and high temperature after solid solution and aging were tested. Calculated by JMat-Pro software, the precipitated phase composition of the Al-Cu-Mn alloy at room temperature is θ-Al₂Cu, T-Al₂₀Cu₂Mn₃, S-Al₂CuMg, Al₃Ti, Al₃Zr, Al₃(Ti, V). The heat treatment regime of the Al-Cu-Mn alloy with the largest amount of effective heat-resistant phase precipitation and the best strengthening effect is solution treatment at (540±5) ℃ for 12 h and aging at (215±5) ℃ for 7-10 h, and the cooling transfer time of solution treatment is controlled within about 8 s. Under this process, the tensile strength of the alloy at 250 ℃ and 350 ℃ reaches 340, 282 MPa and the yield strength reaches 262, 230 MPa, respectively, which far exceed the existing heat-resistant cast aluminum alloy and reach the level of high-strength heat-resistant cast aluminum alloy.

Key words: Al-Cu-Mn alloys, JMat-Pro calculation, heat treatment process, mechanical properties

中图分类号:

TG156

师可馨, 熊艳才, 洪润洲, 张喆. 基于JMat-Pro计算的Al-Cu-Mn系耐热铸造合金的热处理[J]. 金属热处理, 2025, 50(6): 249-254.

Shi Kexin, Xiong Yancai, Hong Runzhou, Zhang Zhe. Heat treatment of Al-Cu-Mn heat-resistant casting alloy based on JMat-Pro calculation[J]. Heat Treatment of Metals, 2025, 50(6): 249-254.

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基于JMat-Pro计算的Al-Cu-Mn系耐热铸造合金的热处理

Heat treatment of Al-Cu-Mn heat-resistant casting alloy based on JMat-Pro calculation

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