| 工业牌号铝合金的超塑性能及微观组织演化特征 |
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| 引用本文： | 金泉林,吴慧英,周义.工业牌号铝合金的超塑性能及微观组织演化特征[J].塑性工程学报,2011,18(6). |
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| 作者姓名： | 金泉林 吴慧英 周义 |
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| 作者单位： | 机械科学研究总院先进制造技术研究中心,北京,100083 |
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| 摘 要： | 采用实验方法研究国外广泛用于汽车车身板件冷冲压成形的工业牌号铝合金板材AA5182和6016的超塑性能,以及超塑变形中微观组织的演化特征。通过超塑性单向拉伸试验、材料变形前后的微观组织观察和自由胀形试验,揭示出铝合金AA5182具有一定的超塑性能,而铝合金6016的超塑性能很低。铝合金AA5182在温度为375℃、应变速率为1.67×10-3/s时,材料的延伸率达到210%,m值达到0.25;在温度为500℃、应变速率为1.67×10-2/s时,材料延伸率达到225%,m值达到0.35。
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| 关 键 词： | 工业牌号铝合金 超塑性 晶粒尺寸与形状 自由胀形 |
Superplastic behaviors and microstructureevolution of commercial aluminum alloys |
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| JIN Quan-lin,WU Hui-ying,ZHOU Yi.Superplastic behaviors and microstructureevolution of commercial aluminum alloys[J].Journal of Plasticity Engineering,2011,18(6). |
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| Authors: | JIN Quan-lin WU Hui-ying ZHOU Yi |
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| Affiliation: | JIN Quan-lin WU Hui-ying ZHOU Yi(Advanced Manufacture Technology Center,China Academy of Machinery Science & Technology,Beijing 100083 China) |
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| Abstract: | An experimental study of superplastic behaviors and microstructure evolution of the commercial aluminum alloys 5182 and 6016 is presented in this paper.The main experiments include the superplastic tensile test,microstructure observation before and after tensile deformation,free bulging test.The obtained experimental results show that superpastic behaviors of commercial aluminum alloy AA5182 is much better than one of commercial aluminum alloy 6016.There are two best superplasticity positions for commercial... |
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| Keywords: | commercial aluminum alloy superplasticity grain size and shape free bulging |
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