2022铝合金冷热轧板强度及其各向异性分析  

2022 ALUMINUM ALLOY COLD/HOT-ROLLED SHEETS STRENGTH AND ANISOTROPY ANALYSIS

作　　者：廉良冲[1] 蒋瑞斌[1] 伍浩 LIAN LiangChong;JIANG RuiBin;WU Hao(Hunan Biological And Electromechanical Polytechnic Department of Mechanical Engineering,Changsha 410126,China;Jiangnan Industries Gruop Co.,Ltd,Xiangtan 411207,China)

机构地区：[1]湖南生物机电职业技术学院机械系,长沙410126 [2]江南工业集团有限公司,湘潭411207

出　　处：《机械强度》2018年第4期943-947,共5页Journal of Mechanical Strength

基　　金：湖南省教育厅科学研究项目(16C0942)资助~~

摘　　要：2022合金具有高强度、耐损伤、可时效强化等特点,可用于下一代超音速飞机蒙皮和战车装甲等领域,按构件形状的不同其来料可分为热轧和冷轧的区别。热轧板和冷轧板经时效处理后,发现热轧板较冷轧板的抗拉和屈服强度更高,但延伸率下降。在同种轧制实验条件下,垂直于轧制方向的抗拉和屈服高于沿轧制方向,延伸率降低。通过金相和透射电子显微镜发现,热轧板晶粒较冷轧板细小,再结晶晶粒多,且热轧板的析出相较冷轧板细小、密集的分布在铝基体中,在宏观上反应为抗拉强度及硬度更高。2022 alloy has some characteristics of high strength,resistance to damage,can strengthen aging,When used in the next generation of supersonic aircraft skin and armored fighting vehicles and other fields,hot rolled and cold rolled are distinguish due to the different incoming member shapes.After aging treatment,hot-rolled plates tensile and yield strength higher than cold rolled sheet,but its elongation decreased.Under the same kind of rolling state,the perpendicular to the rolling direction of tensile higher than the yield in the rolling direction,but,elongation is reduced.By optical and transmission electron microscopy find hot rolled sheet grain relatively small and recrystallized grains increase than cold rolled sheet.The precipitation of hot-rolled plate small,densely distributed in the aluminum matrix compared to sheet cold-rolled,in macro the reaction to the higher tensile strength and hardness.

关 键 词：2022铝合金 热轧 冷轧 金相组织 透射电镜测试 

分 类 号：TG146.21[一般工业技术—材料科学与工程]