Microstructure and mechanical properties of Al-Fe-V-Si/SiCp composites

摘要：

The characteristics of microstructures and mechanical properties of the multi-layer spray deposited SiCP/Al-6.5Fe-0.6V-1.3Si,SiCP/Al-8.5Fe-1.3V-1.7Si and SiCP/Al-10Fe-1.3V-2Si composite sheets obtained by rolling after extruding were investigated.The evolution of the grain and phases of these composites during processing were examined,and the influence of the microstructures on the mechanical properties was analyzed.The experimental results show that the ultimate tensile strengths σb of the three kinds of composite sheets are 420,535,470 MPa respectively at room temperature,and 232,285,300 MPa at 315 ℃ and 148,180,200 MPa at 400 .℃ The excellent mechanical properties can be attributed to the high solid solubility,fine grain size,Al12(Fe,V)3Si precipitation particles and the SiC particles.And the composition of the matrix alloy has an obvious effect on the mechanical properties of the as-rolled sheets.

关键词： heat resistant alloy composite spray deposition microstructure mechanical property

作者: CHEN Zhen-hua HE Yi-qiang YAN Hong-ge HAO Liang CHEN Zhi-gang CHEN Gang

作者单位: College of Materials Science and Engineering,Hunan University,Changsha 410082,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）