时效工艺对新型铸造铝铜合金微观组织和性能的影响  

Influence of Different Aging Process on the Microstructure and Properties of a New Casting Al-Cu Alloy

作　　者：罗岚[1] 张晓燕[1,2] 吴娟娟[1,2] 杨显容[1] 杨阳[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州省材料结构与强度重点实验室,贵州贵阳550025

出　　处：《现代机械》2012年第4期90-91,共2页Modern Machinery

基　　金：贵州大学大学生创新性实验计划项目贵大创字(2011)103号

摘　　要：对不同时效工艺条件下新型铸造铝铜合金的力学性能、微观组织结构进行了分析,结果表明:新型铸造铝铜合金有很好的时效硬化特性,当保温时间为4 h时,硬度可达到较高值;经时效处理后试样的晶粒尺寸明显减小,晶界和晶粒内部均有大量析出相析出且分布均匀。The hardness and microstructure of a new casting Al-Cu alloy in different aging conditions were analyzed. The results showed that the new casting Al - Cu ＇alloy demonstrated an excellent aging hardening characteristic. When the holding time was 4h, the hardness can reach a higher value. After aging treatment the grain size of the samples was significantly reduced. There were a lot of precipitates on the grain boundaries and in the inside of grains.

关 键 词：时效工艺 铸造铝铜合金 微观组织 性能 

分 类 号：TG146[一般工业技术—材料科学与工程]