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| Ti细化A357铝合金中的析出相 | |
| 引用本文： | 祝汉良,郭景杰,贾均,李沛勇. Ti细化A357铝合金中的析出相[J]. 金属学报, 2000, 36(1): 17-20 |
| 作者姓名： | 祝汉良 郭景杰 贾均 李沛勇 |
| 作者单位： | 1. 北京航空工艺研究所,北京,100024 2. 哈尔滨工业大学材料科学与工程学院,哈尔滨,150001 3. 北京航空材料研究院,北京,100095 |
| 摘 要： | 用透射电镜研究了Ｔｉ细化Ａ３５７铝合金组织中析出相的形态，组成及其对合金变形，性能的影响。结果表明：Ｔｉ细化Ａ３５７铝合金组织中主要存在着弯曲状的Ｔｉ３Ｓｉ５，直杆状的ＴｉＡｌ３及短棒状的Ａｌ和Ｔｉ为主，含Ｍｇ和Ｓｉ的化合物，拉伸变形过程中，析出相阻挡和缠结位错，对合金有一定的强化作用，和过程中，析出相周围先形成表面无析出区，延长时效时间后该区消失，对合金的拉伸性能造成的一定的影响。 |
| 关 键 词： | 铝合金 析出相 拉伸性能 钛 晶粒细化 |
| 文章编号： | 0412-1961(2000)01-0017-04 |
| 修稿时间： | 1999-05-10 |
PRECIPITATED PHASES OF A357 Al ALLOY REFINED WITH Ti |
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| ZHU Hanliang,GUO Jingjie,JIA Jun,LI Peiyong. PRECIPITATED PHASES OF A357 Al ALLOY REFINED WITH Ti[J]. Acta Metallurgica Sinica, 2000, 36(1): 17-20 | |
| Authors: | ZHU Hanliang GUO Jingjie JIA Jun LI Peiyong |
| Abstract: | The morphologies and compositions of precipitated phases in A357 Al alloy refined with Ti were measured by mean of TEM, and their effects on deformation and tensile properties of the alloy were also investigated. It was shown that these phases are Ti_3Si_5 with curve shape, TiAl_3 with straightpole-shape and short-stick--shape compound composed of Al, Ti, Mg and Si. During tensile deformation, the precipitated phases hold up and entwist dislocations, and strengthen the alloy. During aging treatment, free-precipitation zones around the above precipitated phases form first, and then disappear with increasing the aging time, which influences the tensile properties of the alloy. |
| Keywords: | Ti A357 Al alloy precipitated phase tensile property |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |