轧制工艺对2219铝合金板材力学性能的影响  

Effect of Rolling Process on Mechanical Properties of 2219 Aluminum Alloy Plate

作　　者：黄元春[1,2] 刘翔[1,2] 刘宇[1,2] 杨楚戈 邱涛[1,2] 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,湖南长沙410083 [2]中南大学轻合金研究院,湖南长沙410083 [3]中南大学机电工程学院,湖南长沙410083

出　　处：《热加工工艺》2016年第21期1-4,共4页Hot Working Technology

基　　金：国家重点基础研究发展计划(973计划)项目(2012CB619504)

摘　　要：通过对2219铝合金轧制板材的显微组织观察和力学性能测试,研究了3种轧制工艺对其板材显微组织和力学性能的影响。结果表明,轧制过程中的道次压下率对2219铝合金的显微组织和力学性能均有显著影响。在总压下率相同的条件下,经40%、22%、28%的热轧,然后进行20%、25%、33%、35%、23%冷轧的板材综合力学性能最好,其抗拉强度、屈服强度、伸长率和维氏硬度分别为406.4 MPa、312.2 MPa、13.4%、169.6 HV。The effects of three kinds of rolling process on the microstructure and mechanical properties of 2219 aluminumalloy rolled plates were studied by the microstructure observation and mechanical properties tests. The results show that therate of pass reduction in rolling processes has a significant influence on the microstructure and mechanical properties of 2219aluminum alloy. Under the same condition of the total reduction rate, the comprehensive mechanical properties of the plateafter hot rolling of 40%, 22%, 28% and then cold rolling of 20%, 25%, 33%, 35% and 23% are the best. The tensile strength,yield strength, elongation and Vickers hardness are 406.4 MPa, 312.2 MPa, 13.4% and169.6 HV, respectively.

关 键 词：2219铝合金 道次压下率 轧制工艺 显微组织 力学性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]