超声溶体处理对7055铝合金铸态组织和性能的影响  

The Influences of Ultrasonic Treatment on as-Cast Structure and Properties of 7055 Aluminum Alloy Melt

作　　者：胡化文[1] 陈康华[1] 黄兰萍[1] 朱武[1] 刘红卫[1] 郑强[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《铝加工》2004年第3期1-3,6,共4页Aluminium Fabrication

基　　金：国家重点基础研究发展规划项目 ( G19990 64 90 0 );军工配套项目 ( MKFPT-0 3 -14 8)

摘　　要：通过对 70 5 5铝合金熔体浇铸前作用超声 ,改变凝固前熔体状态 ,研究超声作用对铸态合金相组织、力学性　　能的影响。结果表明 :在约 6 5 0℃对 70 5 5铝合金熔体作超声处理一定时间后浇铸 ,能细化晶粒 。Ultrasonic vibrations were used for 7055 aluminum alloy melt prior to pouring,thus the melt state was changed before solidification.The effect of ultrasonic vibration on metallurgical structure and mechanical properties of the as-cast alloy were studied.The results show that the grain refinement and the strength and plasticity of the alloy can be improved after ultrasonic treatment and pouring were carried out at 650℃ for 7055 aluminun alloy melt.

关 键 词：7055铝合金 超声振动 空化 

分 类 号：TG166.3[金属学及工艺—热处理]