Microstructure and Properties of 50Si50Al Alloy Produced by Spray Deposition and Hot Pressing Process

摘要：

　　A novel Si-Al alloy prepared by spray forming process investigated in this paper.Experimental results show that fine and homogene ous grain structure is obtained in as-deposited al loy.In addition, hot pressing process can eliminated the porosities formed at deposition process.Micro structure analysis show that the primary silicon frac tured at a given stress and the particles congregated in microzone with increasing of the stress.After hot pressing, the alloyexhibits well physical and me chanical characteristics, the density is 2.514 g·cm3, the coefficient of thermal expansion is 10.3 ×10-6K-1 at the range from room temperature to 100 ℃, the thermal conductivity can reach 132 W.m-1·K-1, the ultimate compressive strength and Brinell hardness is 97.2 MPa and 130 HB, respec tively..

关键词： spray deposition Si-Al alloy hot pressing properties

作者: Guofa Mi Changyun Li Lei Xu Linlin Chen

作者单位: School of Material Science and Engineering,Henan Polytechnic University,Jiaozuo ,454003,P.R.China Hebei Iron & Steel Research Institute,Shijiazhuang,050000,P.R.China

会议类型: 国际会议

会议名称: The 12th China-Russia Symposium on Advanced Materials and Technologies(第十二届中俄双边新材料新工艺国际会议)

会议地点: 昆明

会议语种:英文

页码: 581-584

在线出版日期: 2013-11-19（万方平台首次上网日期，不代表论文的发表时间）