不同热处理的Cu-0.8Cr-0.05Y合金形变时效行为  

Effect of Cold Work on Aging Precipitation of Cu-0.8Cr-0.05Y Alloy at Different Heat Treatment

作　　者：郭守晖[1] 张萌[2] 帅歌旺[3] 丁岩[2] 

机构地区：[1]南昌大学理学院,江西南昌330031 [2]南昌大学材料科学与工程学院,江西南昌330031 [3]南昌航空工业学院材料科学与工程系,江西南昌330034

出　　处：《南昌大学学报（理科版）》2006年第5期470-472,477,共4页Journal of Nanchang University(Natural Science)

基　　金：北京科技大学新金属材料国家重点实验室开放基金资助项目(2005)

摘　　要：对铸造Cu-0.8Cr-0.05Y合金采用了两种处理工艺:铸态+固溶处理+冷轧+时效(工艺A);铸态+冷轧+时效(工艺B)。通过对显微组织观察、硬度和导电率的分析,研究了经上述工艺处理后该合金的形变时效行为。结果表明,经工艺B处理的试样在时效过程中由于第二相析出、长大先于再结晶进行,因而具有更好、更稳定的综合性能,经90%冷轧变形,在480℃时效3 m in后,显微硬度可达150HV,导电率达90%IACS。Two kind processing crafts to the casting Cu -0.8Cr -0.05Y alloys：processing A is casting ＋ solution treated ＋ cold working ＋ aging, and processing B is casting ＋ cold working ＋ aging. It has been studied that the effects of these crafts on the microstructures,hardness and electrical conductivity of the alloy. The results show that the alloy after treated by process B has more excellent properties because the second phase precipitates from the alloy and grows up before recrystallization during aging. The hardness and conductivity of the alloy are up to 150 HV and 90% IACS respectively by cold working 90% and aging at 480 ℃for 3 min.

关 键 词：Cu-Cr-Y合金 时效 导电率 硬度 

分 类 号：TG146.11[一般工业技术—材料科学与工程]