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| SiCP/Al复合材料力学性能及显微结构分析 | |
| 引用本文： | 程南璞,曾苏民,李春梅,陈志谦,于文斌,潘复生.SiCP/Al复合材料力学性能及显微结构分析[J].功能材料,2006,37(7):1134-1137. |
| 作者姓名： | 程南璞 曾苏民 李春梅 陈志谦 于文斌 潘复生 |
| 作者单位： | 1. 中南大学,材料科学与工程学院,湖南,长沙,410083;西南大学,材料科学与工程学院,重庆,400715 2. 中南大学,材料科学与工程学院,湖南,长沙,410083;西南大学,材料科学与工程学院,重庆,400715;西南铝加工厂,重庆,401326 3. 西南大学,材料科学与工程学院,重庆,400715 4. 重庆大学,材料科学与工程学院,重庆,400045 |
| 基金项目： | 国家自然科学基金 , 重庆市科委科技计划 , 重庆市院士基金 |
| 摘 要： | 采用粉末冶金 热挤压法制备了10%SiCP/6066Al(体积分数)复合材料.对材料拉伸性能进行了研究,并利用金相显微镜、扫描电镜和透射电镜对微观组织结构进行了观测.实验结果表明:SiC颗粒在铝基体中分布比较均匀;T6热处理条件下10%SiCp/6066Al复合材料的抗拉强度和屈服强度分别约为430.5、354.1MPa,其延伸率为5%,弹性模量为84.5GPa.加入SiC颗粒后合金基体晶粒细化同时位错密度提高,位错强化和细晶强化在SiCP/Al复合材料的强化机制中起了主要作用. |
| 关 键 词： | 铝基复合材料 拉伸性能 显微结构 强化机制 |
| 文章编号： | 1001-9731(2006)07-1134-04 |
| 收稿时间： | 2005-09-19 |
| 修稿时间： | 2006-03-28 |
Mechanical properties and microscopic analysis of SiCP/Al composites |
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| CHENG Nan-pu,ZENG Su-min,LI Chun-mei,CHEN Zhi-qian,YU Wen-bin,PAN Fu-sheng.Mechanical properties and microscopic analysis of SiCP/Al composites[J].Journal of Functional Materials,2006,37(7):1134-1137. | |
| Authors: | CHENG Nan-pu ZENG Su-min LI Chun-mei CHEN Zhi-qian YU Wen-bin PAN Fu-sheng |
| Affiliation: | 1. School of Materials Science and Engineering, Central South University, Changsha 410083, China; 2. School of Materials Science and Engineering, Southwest University, Chongqing 400715, China; 3. Southwestern Aluminum Fabrication Plant, Chongqing 401326, China; 4. School of Materials Science and Engineering, Chongqing University, Chongqing 400045, China |
| Abstract: | The 10%SiC_P/Al(volume fraction) composites were fabricated by power metallurgy plus hot extrusion.The tensile properties of the materials were studied,and their microstructures were also observed by SEM and TEM.The experimental results indicate that SiC particles distribute homogeneously in the matrix,and the tensile strength,yield strength,elongation and elastic modulus of 10%SiC_P/6066Al composites are 430.5,354.1MPa,5% and 83.5GPa under T6 heat treatment,respectively.Adding SiC particles into Al matrix leads to high dislocation density and crystalline refinement.The dislocation strengthening and crystalline refinement play important roles in the strengthening mechanisms for the composites in our experiment. |
| Keywords: | aluminum matrix composites tensile property microstructure strengthening mechanisms |
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