| Sc和Ti复合微合金化对Al-Mg合金组织与性能的影响 |
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| 引用本文： | 李绍禄,潘青林,陈显明.Sc和Ti复合微合金化对Al-Mg合金组织与性能的影响[J].兵器材料科学与工程,2003,26(1):11-15. |
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| 作者姓名： | 李绍禄 潘青林 陈显明 |
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| 作者单位： | 1. 湖南大学,材料测试中心,长沙,410082
2. 中南大学,材料科学与工程学院,长沙,410083 |
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| 摘 要： | 研究了微量Sc和Ti复合合金化对Al-Mg合金显微组织与拉伸性能的影响。结果表明 :Sc和Ti复合微合金化可显著提高Al-Mg合金的强度。在Al- 5Mg合金中 ,采用Sc和Ti复合微合金化可形成Al3 (Sc ,Ti)复合粒子 ,初生Al3 (Sc ,Ti)颗粒具有极强的细化晶粒的作用 ,次生Al3 (Sc,Ti)质点强烈地钉扎位错和亚晶界 ,从而有效地抑制合金的再结晶。Sc和Ti复合微合金化还可大大促进微量Sc在Al-Mg合金中的各种强化作用。由于Ti的价格比Sc便宜很多 ,采用Sc和Ti复合微合金化可减少铝合金中Sc的加入量 ,从而降低合金的成本
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| 关 键 词： | Al-Mg-Sc-Ti合金 Al3(Sc Ti) Al3Sc 显微组织 拉伸性能 |
| 文章编号： | 1004-244X(2003)01-0011-05 |
| 修稿时间： | 2002年6月6日 |
Effect of Sc and Ti additions on microstructures and tensile properties of Al-Mg alloys |
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| LI Shao-lu ,PAN Qing lin ,CHEN Xian ming.Effect of Sc and Ti additions on microstructures and tensile properties of Al-Mg alloys[J].Ordnance Material Science and Engineering,2003,26(1):11-15. |
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| Authors: | LI Shao-lu PAN Qing lin CHEN Xian ming |
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| Affiliation: | LI Shao-lu 1,PAN Qing lin 2,CHEN Xian ming 2 |
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| Abstract: | The effect of the additions of Sc and Ti on the microstructures and tensile properties of Al-Mg alloys has been studied. The results show that the additions of Sc and Ti significantly increase the strength of Al-Mg alloys, and result in a superior combination of strength and ductility. The Al-Mg alloys containing Sc and Ti may form Al 3(Sc, Ti) composite particles. The primary Al 3(Sc, Ti) particles can substantially refine the grain size of aluminum alloy castings,and more secondary Al 3(Sc, Ti) dispersoids precipitate in Al-Mg-Sc-Ti alloy, they are much more effective on inhibiting recrystallization and strengthening the alloys. As the price of Sc is much expensive than that of Ti, less Sc is required to produce Al alloys containing Sc by using the composite additions of Sc and Ti. |
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| Keywords: | Al-Mg-Sc-Ti alloy Al 3(Sc Ti) Al 3Sc microstructure tensile property |
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