5083/6063异种铝合金焊接头的低温拉伸性能研究  

Research on Tensile Properties of 5083/6063 Dissimilar Aluminum Alloy Joint

作　　者：邱胜闻 李银宾[1] 李晟[1] 张明辉[1] 李秋龙[1] 董升朝[1] 李培跃[1] 

机构地区：[1]中国船舶重工集团公司第七二五研究所,河南洛阳471023

出　　处：《材料开发与应用》2015年第6期29-32,共4页Development and Application of Materials

基　　金：中央国有资本经营预算重点产业转型升级和发展资金项目(MK140803)

摘　　要：采用拉伸试验机,研究了5083/6063异种铝合金对接焊焊接头低温拉伸力学性能,通过扫描电子显微镜,对拉伸断口的组织形貌进行了观察分析。研究结果表明:实验温度为298 K、113 K、77 K时,抗拉强度依次为129 MPa、175 MPa、220.5 MPa,抗拉强度随温度降低而增大,延伸率随温度降低有稍微提高。对低温断口的微观形貌分析,断口呈现韧窝形貌,断口分析为韧性断裂。The tensile properties of 5083 /6063 dissimilar aluminum alloy joint was investigated at low temperature by means of tensile properties test. The fracture morphology was examined and analyzed by Scanning Electron Microscope（ SEM）. The results showed that the ultimate tensile strength and elongation increased with reduction of test temperature from 293 K to 77 K.The ultimate tensile strength of samples was 129 MPa,175 MPa and 220. 5 MPa at 298 K,113 K and 77 K,respectively. By observing and analyzing the tensile facture,the 5083 /6063 dissimilar aluminum alloy exhibited ductile facture with dimple at low temperature.

关 键 词：5083/6063异种铝合金 低温拉伸 拉伸性能 断口扫描 

分 类 号：TG446.1[金属学及工艺—焊接]