Microstructure and mechanical properties of rheo-diecasted A390 alloy

摘要：

The microstrueture and mechanical properties of the rheo-dieeasting (RDC) A390 alloy under as-cast and T6 heat treatment conditions were investigated. The results indicate that the RDC sample has fine and uniform microstrueture throughout the sample under the as-east condition, and .the average size of primary Si spheroids is 20-30 μm. Meanwhile, the intermetallic compounds in RDC sample are reduced. Compared with the alloy produced by conventional liquid die-casting(LDC), RDC samples have improved tensile strength, ductility, hardness and wear resistance. It is also found that heat-treatment of the RDC A390 alloy under T6 condition, can substantially improve mechanical ProPerties, with the tensile elongation more than 100％ improvement.

关键词： A390 alloy rheo-diecasting ultrasonic vibration mierostructures mechanical properties

作者: ZHAO Jun-wen WU Shu-sen

作者单位: School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China State Key Laboratory of Material Processing and Die & Mould Technology,Huazhong University of Scienc

会议类型: 国际会议

会议名称: The 11th International Conference on Semi-Solid Processing of Alloy and Composites(第11届合金与复合材料半固态成形国际会议)

会议地点: 北京

会议语种:英文

页码: 754-757

在线出版日期: 2010-09-16（万方平台首次上网日期，不代表论文的发表时间）