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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。
The effects of compressive deformation and annealing heat treatment on the microstructure of high purity Ag (99.99%) were investigated. The results show that after high-purity Ag ingot die-forging, the as-cast microstructure can be eliminated by annealing at 570 ℃ for 2 h, the yield strength is about 66 MPa, and the stress increases obviously with the increase of strain. The deformation of 85% deformation, annealing temperature of 360 ° C for 1.5 h, high purity Ag billet microstructure uniform, in line with the basic requirements of the preparation target.