固溶处理对高强度铝合金组织和性能影响  

Influence of Solid Solution Treatment on Microstructure and Properties of High Strength Aluminum Alloy

作　　者：闫兴华[1] 葛影 马顺杰 毕俊召[3] 

机构地区：[1]首钢京唐钢铁联合有限责任公司热轧部,河北唐山063200 [2]唐山科技职业技术学院冶金工程系,河北唐山063010 [3]吉林电子信息职业技术学院冶金学院,吉林132000

出　　处：《热加工工艺》2016年第20期242-244,共3页Hot Working Technology

摘　　要：观察了沉积态、挤压态、热处理后样品的显微组织,对经固溶处理的样品进行了力学性能测试。研究了不同固溶处理和不同挤压比对喷射成形7055超高强度铝合金的显微组织和性能的影响。结果表明在475~480℃固溶1.5~2 h然后130℃时效24 h的材料性能最佳。热处理后的材料抗拉强度达到725 MPa,提高了5%;伸长率达到了13.0%,提高了40%。The mierostructures of the samples after the deposition, extrusion and heat treatment were observed. The mechanical properties of the samples after solid solution treatment were tested. The effects of different solid solution treatment and different extrusion ratios on the microstructure and properties of spray formed 7055 ultra high strength aluminum alloy were studied. The results show that： material performances after solid solution at 475-480 ℃ for 1.5-2 h and then aging at 130 ℃ for 24 h are the best. The tensile strength of the material after heat treatment reaches 725 MPa, which increases by 5%; the elongation reaches 13.0%, which increases by 40%.

关 键 词：高强铝合金 固溶处理 挤压比 力学性能 显微组织 

分 类 号：TG156[金属学及工艺—热处理]