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材料工程  2018, Vol. 46 Issue (12): 124-130    DOI: 10.11868/j.issn.1001-4381.2016.001293
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
基体成分对SiCP/Al-Fe-V-Si复合材料显微组织与性能的影响
贺毅强1,2, 徐虎林1,2, 钱晨晨1,2, 丁云飞1,2, 冯文1,2, 陈劲松1,2, 李化强1,2, 冯立超1,2
1. 淮海工学院 机械与海洋工程学院, 江苏 连云港 222005;
2. 江苏省海洋资源开发研究院, 江苏 连云港 222005
Effects of Matrix Components on Microstructure and Properties of SiCP/Al-Fe-V-Si Composites
HE Yi-qiang1,2, XU Hu-lin1,2, QIAN Chen-chen1,2, DING Yun-fei1,2, FENG Wen1,2, CHEN Jing-song1,2, LI Hua-qiang1,2, FENG Li-chao1,2
1. School of Mechanical and Ocean Engineering, Huaihai Institute of Technology, Lianyungang 222005, Jiangsu, China;
2. Marine Resources Development Research Institute of Jiangsu, Lianyungang 222005, Jiangsu, China
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摘要 采用二次热压和多道次热轧制备致密喷射沉积SiCP/Al-Fe-V-Si复合材料。通过扫描电镜、透射电镜和拉伸实验分析基体合金成分和Fe/V比对复合材料显微组织、力学性能以及耐热性能的影响。结果表明:轧制态复合材料具有高体积分数的Al12(Fe,V)3Si弥散粒子,且随基体Fe含量的升高而增加,当Fe含量为11.5%(质量分数)时,弥散粒子体积分数约为40%;Al12(Fe,V)3Si弥散粒子的粒度为50~80nm,多分布于晶界上,具有良好的热稳定性。500℃以上时由于Fe原子体扩散增强,晶界和晶内Al12(Fe,V)3Si开始粗化,且粗化速率随Fe/V比值的增大而降低。复合材料的强度随Al12(Fe,V)3Si体积分数的增加而提高,随拉伸温度的升高而降低;伸长率随Al12(Fe,V)3Si体积分数和拉伸温度的升高而降低。
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贺毅强
徐虎林
钱晨晨
丁云飞
冯文
陈劲松
李化强
冯立超
关键词 铝基复合材料喷射沉积基体成分颗粒增强显微组织    
Abstract:Spray deposited SiCP/Al-Fe-V-Si composites were densified by twice hot pressing and subsequently multi-pass hot rolling. Scanning electron microscope, transmission electron microscope and tensile test were used, and the effect of matrix alloy components and Fe/V ratio on microstructure, mechanical properties and heat resistance of the composites were analyzed.The results show that the as-rolled composites have high volume fraction Al12(Fe,V)3Si dispersoids, and volume fraction of the dispersoids increases with Fe content increasing. Volume fraction of Al12(Fe,V)3Si dispersoids is up to 40% when Fe content of the matrix alloy is 11.5%(mass fraction). Al12(Fe,V)3Si dispersoids with the diameter of 50-80nm are distributed along the grain boundaries, and exhibit excellent thermal stability up to 500℃. However, above 500℃ the Fe atoms diffuse in the form of bulk diffusion, and accordingly the dispersoids both along the grain boundaries and in the grains become coarsened at a relative high velocity. Coarsening velocity of Al12(Fe,V)3Si dispersoids falls with the increase of Fe/V ratio. Strength of the composite increases with volume fraction of Al12(Fe,V)3Si dispersoid increasing, and decreases with the tensile temperature rising; the elongation of the composite decreases both with rise of volume fraction of Al12(Fe,V)3Si dispersoid and tensile temperature.
Key wordsAl-matrix composite    spray deposition    matrix component    particle reinforcement    microstructure
收稿日期: 2016-10-27      出版日期: 2018-12-18
中图分类号:  TG146.2  
通讯作者: 贺毅强(1981-),男,教授,博士,研究方向:金属基复合材料,联系地址:江苏省连云港市新浦区苍梧路59号淮海工学院机械工程系(222005),E-mail:ant210@126.com     E-mail: ant210@126.com
引用本文:   
贺毅强, 徐虎林, 钱晨晨, 丁云飞, 冯文, 陈劲松, 李化强, 冯立超. 基体成分对SiCP/Al-Fe-V-Si复合材料显微组织与性能的影响[J]. 材料工程, 2018, 46(12): 124-130.
HE Yi-qiang, XU Hu-lin, QIAN Chen-chen, DING Yun-fei, FENG Wen, CHEN Jing-song, LI Hua-qiang, FENG Li-chao. Effects of Matrix Components on Microstructure and Properties of SiCP/Al-Fe-V-Si Composites. Journal of Materials Engineering, 2018, 46(12): 124-130.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.001293      或      http://jme.biam.ac.cn/CN/Y2018/V46/I12/124
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