高纯Ag变形及退火后的微观组织  

Microstructure of deformed and annealed high-purity Ag

作　　者：董亭义[1] 万小勇[1] 罗俊锋[1] 高岩[1] 王欣平[1] 

机构地区：[1]北京有色金属研究总院,有研亿金新金属材料股份有限公司,北京100088

出　　处：《材料热处理学报》2012年第1期80-83,共4页Transactions of Materials and Heat Treatment

摘　　要：研究了压缩变形及退火热处理对高纯Ag(99.99%)微观组织的影响。结果表明,高纯Ag铸锭模锻后,经570℃×2 h退火可消除铸态组织,屈服强度约为66 MPa,随应变的增加应力明显增加;然后经道次变形量20%,总变形量85%的变形,退火温度为360℃时间为1.5 h,高纯Ag坯料的微观组织均匀,符合制备靶材的基本要求。Microstructure of Ag with 99.99% purity after compressive deformation and annealing was investigated. The results show that yielding strength of Ag ingot dieforged and annealed at 570 ~C for 2 h is 66 MPa, and the stress increases significantly with increasing strain,i, e, the strain hardening is obvious. With the rolling deformation of 20% per pass and the coldrolled accumulative reduction of 85% , and then annealed at 360 ℃ for 1.5 h, the microstructure of highpurity Ag is uniform.

关 键 词：高纯Ag 微观组织 变形 退火 

分 类 号：TG146.2[一般工业技术—材料科学与工程]