| 石墨／镁基复合材料中的残余应变,位错及孪晶 |
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| 引用本文： | 武凤,朱静. 石墨／镁基复合材料中的残余应变,位错及孪晶[J]. 金属学报, 1998, 34(5): 449-454 |
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| 作者姓名： | 武凤 朱静 |
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| 作者单位： | 清华大学材料科学与工程研究院!北京，100084(武凤)，钢铁研究总院!北京，100081(朱静) |
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| 基金项目： | 国家自然科学基金!59671034 |
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| 摘 要： | 利用电子显微术对石墨／镁基复合材料界面附近热应力造成的残余应变，位错结构及孪晶进行了分析与观察，位错形成于基体界面区，在切向，径向及轴向力的作用下向基体运动。在界面处存在一厚度为约为１５０ｎｍ的应变层，在基体狭窄区存在应变集中现象。
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| 关 键 词： | 纤维增强 复合材料 镁基体 残余应力 位错 孪晶 |
| 收稿时间： | 1998-05-18 |
| 修稿时间： | 1998-05-18 |
THE RESIDUAL STRAIN, DISLOCATION AND TWIN IN Gr(C)/Mg COMPOSITE |
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| WU Feng,ZHU Jing. THE RESIDUAL STRAIN, DISLOCATION AND TWIN IN Gr(C)/Mg COMPOSITE[J]. Acta Metallurgica Sinica, 1998, 34(5): 449-454 |
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| Authors: | WU Feng ZHU Jing |
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| Affiliation: | WU Feng,ZHU Jing (School of Materials Science and Engineering,Tsinghua University,Beijing )(Central Iron and Steel Research Institute,Beijing ) |
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| Abstract: | The investigation on the microstructure of the residual strain, dislocation and twin nearby interfaces resulted from the thermal stress in Gr(C)/Mg composite has been carried out in this work. The dislocations sprout at interfaces between Gr(C) and the matrix and move towards matrix under the axial, radial and tangential stresses. There is a strain layer with a thickness of about 150 nm nearby the Gr(C) fiber, and the strain is concentrated in narrow areas of the matrix. The formation of twins occurs at one interface and usually ends at a neighbor interface. As the twin is thick, it may cause the neighbor interface apart. |
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| Keywords: | Gr(C)/Mg composite residual strain dislocation twin |
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