| SiC颗粒尺寸对喷射共沉积7075 Al/SiCp挤压及轧制的组织和性能的影响 |
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| 引用本文： | 詹美燕,傅定发,吴有伍,陈清.SiC颗粒尺寸对喷射共沉积7075 Al/SiCp挤压及轧制的组织和性能的影响[J].装备环境工程,2004,22(1):49-53. |
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| 作者姓名： | 詹美燕 傅定发 吴有伍 陈清 |
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| 作者单位： | 詹美燕（湖南大学,材料科学与工程学院,湖南,长沙,410082）
傅定发（湖南大学,材料科学与工程学院,湖南,长沙,410082）
吴有伍（湖南大学,材料科学与工程学院,湖南,长沙,410082）
陈清（湖南大学,材料科学与工程学院,湖南,长沙,410082） |
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| 摘 要： | 研究了喷射共沉积方法制备的7075 Al / SiCp复合材料挤压及轧制过程中SiC颗粒的分布.通过拉伸实验、微观组织的金相及拉伸断口SEM观察分析了SiCp颗粒尺寸对材料组织和性能的影响.实验表明,SiCp在挤压过程中沿厚度方向形成分层分布,SiCp的尺寸及粒度分布对于聚集有较大的影响;轧制过程对挤压时形成的SiCp分层分布有一定的减弱作用,但改善程度和SiCp的尺寸有关;SiCp颗粒尺寸对复合材料的力学性能及断裂机制有很大的影响.
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| 关 键 词： | 7075Al/SiCp复合材料 挤压 轧制 组织 性能 |
| 文章编号： | 1000-8446(2004)01-0049-05 |
| 修稿时间： | 2003年9月16日 |
The Effects of Particle Sizes on Microstructure and Mechanical Properties of Co-sprayed 7075Al/SiCp/15 mass% Composite |
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| ZHAN Mei-yan,FU Ding-fa,WU You-wu,CHEN Qing.The Effects of Particle Sizes on Microstructure and Mechanical Properties of Co-sprayed 7075Al/SiCp/15 mass% Composite[J].Equipment Environmental Engineering,2004,22(1):49-53. |
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| Authors: | ZHAN Mei-yan FU Ding-fa WU You-wu CHEN Qing |
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| Abstract: | : The distribution of SiCp during extrusion and subsequent rolling of co-sprayed 7075Al/ SiCp /15 mass% composite was investigated in this paper. The effects of particle sizes on microstructure and mechanical properties of co-sprayed 7075Al/ SiCp /15 mass% composite were studied by tensile tests, optical micrographs and SEM. The results showed that some highly concentrated bands of SiC particles formed during extrusion depending on the particle sizes; The SiCp bands were weakened during cross-rolling, which depends on the sizes of SiCp; Particle size dependence of mechanical properties and fracture mechanism was also presented. |
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| Keywords: | composite extrusion SiC microstructure properties |
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