冷拉变形对7050铝合金丝材组织与性能的影响  

Effect of cold drawing deformation on microstructure and properties of 7050 aluminum alloy wire

作　　者：韩明明 付金来 崔爽[1] 张旭阳 谭艺哲 张宇婷 HAN Mingming;FU Jinlai;CUI Shuang;ZHANG Xuyang;TAN Yizhe;ZHANG Yuting(Northeast Light Alloy Co.,Ltd.,Harbin 150060,China)

机构地区：[1]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《轻合金加工技术》2024年第9期41-45,共5页Light Alloy Fabrication Technology

摘　　要：对7050铝合金丝材经冷拉变形后过时效态以及冷加工变形态的组织与性能进行了研究。结果表明,随着冷变形量的增加,晶粒拉长,屈服强度、抗拉强度和剪切强度增大。与冷拉态相比较,过时效态丝材的这些指标增加不明显;晶粒越均匀细小,合金丝材冷镦时越不易发生开裂。This article investigates the microstructure and properties of over-aged and cold-drawn 7050 aluminum alloy wire with different cold drawing deformation.The results show that with the increase of cold deformation,the wire grains are elongated,and the yield strength,tensile strength,and shear strength all increase.But the reinforcement degree of cold-drawn wire is greater than that of over-aged one.The more uniform and fine the grains are,the less likely the wire material is to crack during cold heading.

关 键 词：7050铝合金丝材 冷拉变形 力学性能 晶粒组织 

分 类 号：TG359[金属学及工艺—金属压力加工]