| 固溶工艺对6061铝合金组织和拉伸性能的影响 |
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| 引用本文： | 马冬威,张春,张元好,李文科.固溶工艺对6061铝合金组织和拉伸性能的影响[J].金属热处理,2020,45(5):74-77. |
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| 作者姓名： | 马冬威 张春 张元好 李文科 |
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| 作者单位： | 湖北汽车工业学院 材料科学与工程学院, 湖北 十堰 442002 |
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| 基金项目： | 湖北汽车工业学院大学生创新训练计划资助项目;湖北省自然科学基金资助项目 |
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| 摘 要： | 采用光学显微镜、扫描电镜和拉伸试验等方法,研究了固溶处理工艺对6061铝合金微观组织和力学性能的影响。结果表明,随固溶时间的延长和固溶温度的升高,合金中可溶第二相粒子逐渐溶解,再结晶增强,晶粒细化,合金拉伸性能升高;进一步延长固溶时间和提高固溶温度,合金晶粒粗化,合金强度下降。热处理后残留粗大第二相粒子的多少和合金晶粒大小是影响合金拉伸性能和断口形貌的主要因素。时效工艺为180 ℃×8 h条件下,6061铝合金的最佳固溶工艺为535 ℃×80 min。
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| 关 键 词： | 固溶工艺 微观组织 拉伸性能 断口形貌 |
| 收稿时间： | 2019-11-20 |
Effect of solution process on microstructure and tensile properties of 6061 aluminum alloy |
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| Ma Dongwei,Zhang Chun,Zhang Yuanhao,Li Wenke.Effect of solution process on microstructure and tensile properties of 6061 aluminum alloy[J].Heat Treatment of Metals,2020,45(5):74-77. |
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| Authors: | Ma Dongwei Zhang Chun Zhang Yuanhao Li Wenke |
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| Affiliation: | College of Material Science and Engineering, Hubei University of Automotive Technology, Shiyan Hubei 442002, China |
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| Abstract: | Effect of solution process on microstructure and mechanical properties of 6061 aluminum alloy was investigated by means of OM, SEM and tensile test. The results show that the soluble second phase particles gradually dissolve, recrystallization is enhanced, both grain refinement and tensile properties of the alloy increase with the increase of solution time and solution temperature, and with further increase of solution time and solution temperature, the grain begins to coarsen and the strength of the alloy decreases. The amount of residual coarse secondary particles and the grain size of the alloy are the main factors which affect the tensile properties and fracture morphology of the alloy. Under the condition of aging at 180 ℃ for 8 h, the optimum solution process of the 6061 aluminum alloy is at 535 ℃ for 80 min. |
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| Keywords: | solution process microstructure tensile properties fracture morphology |
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