| T1相(Al2CuLi)对铝锂合金各向异性的贡献 |
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| 引用本文： | 魏齐龙,陈铮,王永欣. T1相(Al2CuLi)对铝锂合金各向异性的贡献[J]. 有色金属, 2002, 54(3): 4-8 |
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| 作者姓名： | 魏齐龙 陈铮 王永欣 |
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| 作者单位： | 西北工业大学材料科学与工程学院,西安,710072 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 0 710 46) |
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| 摘 要： | 在分析T1相基本特性的基础上，结合相关工作，论述T1相与位错的交互作用、T1相与结构的相互影响、T1相对合金各向异性的贡献及稀土Ce的作用。结果表明，T1相因其分布及形貌而难以有效阻碍共面滑移；T1相对形变织构的形成起调整作用；织构的存在使T1相的分布及其与位错的作用发生变化，从而使其强化贡献具有各向异性。Ce影响形变织构的形成和合金的时效析出，并对共面滑移具有双重作用，从而改变T1相强化的各向异性。
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| 关 键 词： | 铝锂合金 T1相 各向异性 位错 织构 稀土 |
| 文章编号： | 1001-0211(2002)03-0004-05 |
| 修稿时间： | 2001-09-28 |
CONTRIBUTION OF T1 PRECIPITATE(Al2CuLi) TO ANISOTROPY IN Al-Li ALLOYS |
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| WEI Qilong,CHEN Zheng,WANG Yongxin. CONTRIBUTION OF T1 PRECIPITATE(Al2CuLi) TO ANISOTROPY IN Al-Li ALLOYS[J]. Nonferrous Metals, 2002, 54(3): 4-8 |
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| Authors: | WEI Qilong CHEN Zheng WANG Yongxin |
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| Abstract: | The interaction between T 1 precipitate and moving dislocations,interdependence between T 1 precipitate and textures,contribution of T 1 precipitate to anisotropy and effect of rare earth Ce on T 1 precipitate are described based on analysis of basic characters of T 1 precipitate The results show that T 1 precipitate can not block coplanar slip,but rectify the formation of deformed textures,and its distribution on four{111}planes and interaction with dislocations are changed by textures,and the strengthening contribution of T 1 precipitate is anisotropic The formation of deformed textures and precipitation of the alloy is affected by rare earth Ce,but it has contrary effects on coplanar slip |
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| Keywords: | T 1 precipitate anisotropy dislocation texture cerium |
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