| Effect of Zr content on quench sensitivity of AlZnMgCu alloys |
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| 引用本文： | 刘胜胆 张新明 陈明安 游江海 张小艳. Effect of Zr content on quench sensitivity of AlZnMgCu alloys[J]. 中国有色金属学会会刊, 2007, 17(4): 787-792. DOI: 10.1016/S1003-6326(07)60175-7 |
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| 作者姓名： | 刘胜胆 张新明 陈明安 游江海 张小艳 |
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| 作者单位： | School of Materials Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
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| 摘 要： |
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| 关 键 词： | 铝锌镁铜合金 锆 淬火活性 重结晶 |
| 收稿时间： | 2006-10-17 |
| 修稿时间： | 2006-10-172007-01-30 |
Effect of Zr content on quench sensitivity of AlZnMgCu alloys |
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| LIU Sheng-dan,ZHANG Xin-ming,CHEN Ming-an,YOU Jiang-hai,ZHANG Xiao-yan. Effect of Zr content on quench sensitivity of AlZnMgCu alloys[J]. Transactions of Nonferrous Metals Society of China, 2007, 17(4): 787-792. DOI: 10.1016/S1003-6326(07)60175-7 |
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| Authors: | LIU Sheng-dan ZHANG Xin-ming CHEN Ming-an YOU Jiang-hai ZHANG Xiao-yan |
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| Affiliation: | School of Materials Science and Engineering, Central South University, Changsha 410083, China |
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| Abstract: | The effect of Zr content on quench sensitivity of AlZnMgCu alloys was investigated by mechanical properties testing and microstructure observations. The results show that with the increase of Zr the quench sensitivity relative to hardness and strength increases, while that relative to elongation decreases. From hardness and strength viewpoints, the low quench sensitivity is observed for the Zr-free and 0.05% Zr-containing alloys, which is quite quench sensitive from the ductility viewpoint. The largest quench sensitivity relative to hardness and strength is observed for 0.1% Zr-containing alloy, this is mainly due to large amount of high angle grain boundaries and incoherent Al3Zr dispersoids caused by recrystallization, which may efficiently promote heterogeneous precipitation during air quenching. More than 0.05% Zr can significantly decrease the quench sensitivity relative to ductility, which can be primarily attributed to recrystallization inhibiting and grain refining effects of Zr. |
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| Keywords: | AlZnMgCu alloys Zr quench sensitivity recrystallization |
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