| 缓慢升温时效处理对Al-Zn-Mg-Er-Zr合金性能的影响 |
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| 引用本文： | 仇晨,荣莉,魏午,王为,文胜平,黄晖,董阳,王玉刚.缓慢升温时效处理对Al-Zn-Mg-Er-Zr合金性能的影响[J].金属热处理,2023,48(3):8-11. |
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| 作者姓名： | 仇晨 荣莉 魏午 王为 文胜平 黄晖 董阳 王玉刚 |
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| 作者单位： | 1.北京工业大学 新型功能材料教育部重点实验室, 北京 100124; 2.山东兖矿轻合金有限公司, 山东 邹城 273515 |
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| 基金项目： | 国家重点研发计划(2021YFB3700901) |
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| 摘 要： | 利用扫描电镜(SEM)、显微硬度计及电导仪研究了120℃时效的两种不同工艺对Al-5Zn-3Mg-0.1Er-0.1Zr合金力学性能及导电率的影响。结果表明，相较于直接置于120℃时效工艺，采用5 h缓慢升温至120℃时效处理的试验合金的导电率提高至30.77%IACS,硬度、抗拉强度、屈服强度和伸长率分别提升至186.6 HV0.2、538 MPa、454 MPa和17.5%。两种时效工艺处理合金的断裂方式均为韧脆混合型断裂，但5 h缓慢升温时效处理合金的韧窝密度较高，剪切面特征减少。
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| 关 键 词： | Al-Zn-Mg合金 时效处理 导电率 力学性能 |
| 收稿时间： | 2022-09-30 |
Effect of low heating rate aging treatment on properties of Al-Zn-Mg-Er-Zr alloy |
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| Qiu Chen,Rong Li,Wei Wu,Wang Wei,Wen Shengping,Huang Hui,Dong Yang,Wang Yugang.Effect of low heating rate aging treatment on properties of Al-Zn-Mg-Er-Zr alloy[J].Heat Treatment of Metals,2023,48(3):8-11. |
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| Authors: | Qiu Chen Rong Li Wei Wu Wang Wei Wen Shengping Huang Hui Dong Yang Wang Yugang |
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| Affiliation: | 1. Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, China; 2. Shandong Yankuang Light Alloy Co., Ltd., Zoucheng Shandong 273515, China |
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| Abstract: | Effect of two different aging processes at 120 ℃ on mechanical properties and electrical conductivity of Al-5Zn-3Mg-0.1Er-0.1Zr alloy was studied by scanning electron microscope (SEM), microhardness tester and conductometer. The results show that compared with the aging process by directly putting specimens at 120 ℃, the conductivity of the tested alloy after 5 h slow heating to 120 ℃ aging process is increased to 30.77%IACS, and the hardness, tensile strength, yield strength and elongation are increased to 186.6 HV0.2, 538 MPa, 454 MPa and 17.5%, respectively. Both the fracture modes are ductile-brittle mixed fracture for the alloy treated by the two different aging processes, but for the alloy treated by 5 h slow heating to 120 ℃ aging, the dimple density is higher, and the shear plane characteristic is reduced. |
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| Keywords: | Al-Zn-Mg alloy aging treatment electrical conductivity mechanical properties |
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