| Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er合金低温力学性能与微观组织研究 |
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| 引用本文： | 刘冉,黄晖,马俊,文胜平,高坤元,吴晓蓝,聂祚仁.Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er合金低温力学性能与微观组织研究[J].稀有金属材料与工程,2018,47(1):162-168. |
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| 作者姓名： | 刘冉 黄晖 马俊 文胜平 高坤元 吴晓蓝 聂祚仁 |
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| 作者单位： | 北京工业大学,北京工业大学,北京工业大学,北京工业大学,北京工业大学,北京工业大学,北京工业大学 |
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| 基金项目： | 973项目(2012CB619503),中国博士后科学基金(2014M560865),北京市博士后基金(2015zz-34) |
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| 摘 要： | 以Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er合金为基础,对该材料的冷轧态,温轧态,完全退火态进行从室温降到77 K时的拉伸测试和冲击性能测试。运用背散射电子衍射(EBSD),透射电镜(TEM),扫描电镜(SEM)对合金的原始组织,拉伸断口,冲击断口进行观察,研究不同温度下微观组织对材料拉伸性能及冲击性能的影响。结果表明:随着测试温度的升高,样品的抗拉强度、屈服强度及冲击韧性均逐渐降低;温轧的H114态由于位错缠结规整,亚晶界比较多等原因保持了较高的强度和冲击韧性,实现了高强高韧性能的匹配。
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| 关 键 词： | 5xxx系铝合金 拉伸性能 冲击性能 断口扫描 |
| 收稿时间： | 2015/11/25 0:00:00 |
| 修稿时间： | 2016/2/13 0:00:00 |
Mechanical properties at low temperature and microstructure of Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er alloy |
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| Ran Liu,Hui Huang,Jun M,Shengping Wen,Kunyuan Gao,Xiaolan Wu and Zuoren Nie.Mechanical properties at low temperature and microstructure of Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er alloy[J].Rare Metal Materials and Engineering,2018,47(1):162-168. |
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| Authors: | Ran Liu Hui Huang Jun M Shengping Wen Kunyuan Gao Xiaolan Wu and Zuoren Nie |
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| Affiliation: | Beijing University of Technology,Beijing University of Technology,Beijing University of Technology,Beijing University of Technology,Beijing University of Technology,Beijing University of Technology,Beijing University of Technology |
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| Abstract: | The tensile strength and impact properties at low temperature were investigated on Al-6Mg-0.8Zn-0.5Mn-0.2Zr-0.2Er alloy for cold rolled, warm rolled and fully annealed samples. The original microstructures, tensile fracture and impact fracture were observed using electron back-scattered diffraction(EBSD), transmission electron microscope(TEM) and scanning electron microscope(SEM) in order to analyze the effects of microstructure on tensile property and impact properties. The results showed that, with the decreasing of testing temperature, the stresses are drastically increased as well as the impact properties. The tensile strength and impact property of warm rolled alloy with more sub-boundaries has a higher strength and impact property which realized the matching of high strength and toughness. |
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| Keywords: | 5xxx aluminum alloy Tensile strength Impact properties Fracture scanning |
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