| 热变形条件对7085铝合金晶粒结构和性能的影响(英文) |
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| 引用本文： | 陈送义,陈康华,贾乐,彭国胜.热变形条件对7085铝合金晶粒结构和性能的影响(英文)[J].中国有色金属学会会刊,2013,23(2):329-334. |
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| 作者姓名： | 陈送义 陈康华 贾乐 彭国胜 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室 |
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| 基金项目： | Projects (2010CB731701, 2012CB619502) supported by National Basic Research Program of China;Project (51021063) supported by Creative Research Group of National Natural Science Foundation of China;Project (CX2012B043) supported by Hunan Provincial Innovation Foundation for Postgraduate |
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| 摘 要： | 通过光学显微镜、透射电镜和力学与断裂性能测试,研究热变形条件对7085铝合金晶粒结构和性能的影响。结果表明,动态再结晶的体积分数随着Z值的减少而增加,静态再结晶的体积分数随着Z值的减少而降低。经固溶时效后,合金的力学性能和断裂性能随着Z值的增加先升高后降低。建立了综合变形和固溶过程中的显微组织演化图。在考虑显微组织和性能的基础上,合金优化的Z参数变形条件为1.2×10109.1×1012.
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| 关 键 词： | 7085铝合金 Z参数 热变形 晶粒结构 动态再结晶 静态再结晶 |
| 收稿时间： | 8 November 2011 |
Effect of hot deformation conditions on grain structure and properties of 7085 aluminum alloy |
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| Song-yi CHEN, Kang-hua CHEN, Le JIA, Guo-sheng PENG.Effect of hot deformation conditions on grain structure and properties of 7085 aluminum alloy[J].Transactions of Nonferrous Metals Society of China,2013,23(2):329-334. |
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| Authors: | Song-yi CHEN Kang-hua CHEN Le JIA Guo-sheng PENG |
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| Affiliation: | State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China |
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| Abstract: | The influences of deformation conditions on grain structure and properties of 7085 aluminum alloy were investigated by optical microscopy and transmission electron microscopy in combination with tensile and fracture toughness tests. The results show that the volume fraction of dynamic recrystallization increased with the decrease of Zener-Hollomon (Z) parameter, and the volume fraction of static recrystallization increased with the increasing of Z parameter. The strength and fracture toughness of the alloy after solution and aging treatment first increased and then decreased with the increase of Z parameter. The microstructure map was established on the basis of microstructure evolution during deformation and solution heat treatment. The optimization deformation conditions were acquired under Z parameters of 1.2 × 1010?9.1 × 1012. |
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