纳米改性对ZL109合金的组织和力学性能的影响  

Effect of Nano-modifying on Microstructure and Mechanical Properties of ZL109 Alloy

作　　者：聂景江[1] 徐永东[1] 王军[1] 宋运坤[1] 

机构地区：[1]中国兵器科学研究院宁波分院,浙江宁波315103

出　　处：《热加工工艺》2014年第8期57-58,65,共3页Hot Working Technology

基　　金：浙江省公益性技术应用研究计划项目(2011C31003)

摘　　要：采用经表面包覆Ag后的纳米颗粒对ZL109铝合金进行改性,对改性后铝合金的组织和性能进行研究。结果表明:表面包覆Ag后的纳米颗粒与合金熔体的相容性较好,纳米颗粒均匀分布于合金中;纳米改性可改善合金的组织和性能,改性后铝合金的组织更加细小,枝晶间距明显减小,抗拉强度提高了2%,而断后伸长率提高了200%。The effects of SiC nano-particles covered with Ag on the microstructure and mechanical properties of ZL109 alloy were investigated. The results show that SiC nano-particles covered with Ag can significantly improve the microstructure and mechanical properties of the alloy. The increment of 2% and 200% for the ultimate tensile strength and elongation rate of the modified alloy can be achieved.

关 键 词：纳米改性 A1 SI合金 组织 力学性能 

分 类 号：TG113.25[金属学及工艺—物理冶金]