| Zr含量对Al-0.2wt%Sc合金晶粒尺寸分布和室温拉伸性能的影响 |
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| 引用本文： | 李卫华,李扬,蔡彬.Zr含量对Al-0.2wt%Sc合金晶粒尺寸分布和室温拉伸性能的影响[J].热加工工艺,2009,38(22). |
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| 作者姓名： | 李卫华 李扬 蔡彬 |
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| 作者单位： | 郑州大学物理工程学院,教育部材料物理重点实验室,河南,郑州,450052 |
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| 基金项目： | 中国教育部留学回国科研启动资金资助项目 |
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| 摘 要： | 研究了锆含量对Al-0.2wt%Sc合金的晶粒尺寸分布和拉伸性能的影响.发现Zr不仅能细化合金的晶粒尺寸,而且对晶粒尺寸分布有显著影响.不同温度时效后的室温拉伸性能表明:合金的最佳时效强化温区为330～380℃,而且Zr的添加能适当提高合金的热稳定性.综合结果表明:锆的最佳含量应在0.04wt%～0.08wt%.
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| 关 键 词： | Al-Sc-Zr合金 晶粒尺寸 时效 拉伸性质 |
Effects of Zr Content on Grain size Distributions and Room Temperature Tensile Properties of Al-0.2wt% Alloys |
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| LI Weihua,LI Yang,CAI Bin.Effects of Zr Content on Grain size Distributions and Room Temperature Tensile Properties of Al-0.2wt% Alloys[J].Hot Working Technology,2009,38(22). |
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| Authors: | LI Weihua LI Yang CAI Bin |
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| Abstract: | The effects of Zr content on the grain size distribution and room temperature tensile properties of Al-0.2wt%Sc alloys were investigated. It is found that the Zr addition can obviously refine the grain size; furthermore, it has apparent effects on the grain size distribution of as-cast alloys. The tensile tests of Al-Sc-Zr alloys aged at different temperature show that the optimal aging-strengthening temperature region is between 330 ℃ and 380 ℃. In addition, Zr addition can slightly improve the thermal stability of Al-0.2%Sc alloys. The results indicate that the optimum content of Zr should be between 0.04wt% and 0.08wt%. |
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| Keywords: | Al-Sc-Zx alloys grain size sging tensile properties |
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