B,RE,La对锶变质A356铝合金微观组织及力学性能影响  

Influence of B, RE, La on Microstructure and Mechanical Properties of A356 Aluminium Alloys Modified by Sr

作　　者：仲志国[1] 王爱华[1] 孙海斌[2] 左秀荣[3] 

机构地区：[1]南阳师范学院物理与电子工程学院,河南南阳473061 [2]信阳师范学院物理电子工程学院,河南信阳464000 [3]郑州大学物理工程学院材料物理教育部重点实验室,河南郑州450052

出　　处：《热加工工艺》2010年第1期6-9,共4页Hot Working Technology

基　　金：南阳师范学院专项基金项目(nytc2006k104)

摘　　要：对比研究了B,RE,La对锶变质A356铝合金微观组织与力学性能的影响。结果表明,钛、硼联合细化,晶粒细化效果最明显。经0.01%Ti、0.03%B联合细化的0.04%Sr变质的A356铝合金晶粒细小,硅颗粒细碎、圆整,具有最好的力学性能。The influence of boron, rare earth, lanthanum on microstructure and mechanical properties of A356 alloy modified by strontium was studied. The results show that the addition of titanium, boron leads to the most efficient refinement effect. The A356 alloy modified by 0.04% strontium which is refined by 0.01% titanium and 0.03% boron has refined grain, silicon particles and cptimum mechanical property.

关 键 词：A356铝合金 微观组织 力学性能 

分 类 号：TG243[金属学及工艺—铸造]