热处理对改良铸造铝硅合金热疲劳性能的影响  

Effect of Heat Treatment on Thermal Fatigue Property of Modified Casting Al-Si Alloy

作　　者：隆丹宁[1] 苏广才[2] 黄晓珍 汤宏群[2] 

机构地区：[1]广西电力职业技术学院,广西南宁530007 [2]广西大学材料科学与工程学院,广西南宁530004 [3]柳州上汽通用五菱汽车股份有限公司,广西柳州545007

出　　处：《热加工工艺》2013年第20期88-90,共3页Hot Working Technology

基　　金：广西科学基金资助项目(桂科基0731009)

摘　　要：在传统铸造铝硅合金的基础上,通过添加Cu、Ni、Mn、V、RE等合金元素,研制了改良铸造铝硅合金;研究了热处理对改良铸造铝硅合金热疲劳性能的影响。结果表明,经热处理后,改良铸造铝硅合金的组织变细,基体组织高度球化,析出物细小而弥散分布,强度、塑性、韧性和硬度得到良好配合,因此热疲劳抗力得到更大的提高。On the condition of traditional casting aluminum silicon alloy, by adding Cu, Ni, Mn, V, RE and other alloy elements, a modified casting aluminum silicon alloy was developed. The effects of heat treatment on thermal fatigue property of modified A1-Si alloy casting were studied. The results show that, after heat treatment, casting aluminum silicon alloy becomes finer microstructure, height of the ball, the fine precipitates and disperse, strength, plasticity, toughness, hardness to obtain a good fit, therefore, the thermal fatigue resistance has been greatly enhanced.

关 键 词：改良铸造铝硅合金 热处理 热疲劳性能 

分 类 号：TG156[金属学及工艺—热处理]