等离子净化Al-Zn-Mg合金时效组织与性能研究  

Microstructure and properties of plasma purified Al-Zn-Mg alloy under aging treatments

作　　者：宋建民[1] 翟景[1] 王生[1] 贺新民[1] 张广明[1] 张立君[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：《兵器材料科学与工程》2012年第2期70-72,共3页Ordnance Material Science and Engineering

摘　　要：对净化前、后合金氢含量和力学性能进行测试,并采用TEM对等离子净化后的Al-Zn-Mg合金时效组织进行分析。结果表明:Al-Zn-Mg合金氢含量由0.17 mL/100 g Al降低到0.11 mL/100 g Al;经460℃×120 min固溶、130℃×16 h时效处理后,晶内的析出相细小弥散,晶界上析出相连续分布,GP区起主要的强化作用;Rm达到590 MPa,Rp0.2达到510 MPa,断后伸长率达到8.5%,硬度达到160HB。The microstructure and properties of plasma purified A1-Zn-Mg alloy under aging treatments were investigated using TEM, and tensile strength and H2 content before and after purifying were tested. The results show that H_2 content decreases from 0.17 ml/ 100 gA1 to 0.11 mL/100 gA1; After solutiontreating at 460 ℃for 120 rain and aging at 130 ℃ for 16 h, precipitates in grain are fine and dispersed, precipitates at grain boundary are continuously distributed, and GP zones are the strengthening effect; R,, of 590 MPa, R_p0.2 of 510 MPa, elongation of 8.5 % and HB of 160 can be reached.

关 键 词：AL-ZN-MG合金 等离子净化 时效处理 微观组织 

分 类 号：TG166.3[金属学及工艺—热处理]