5356铝合金焊丝组织与性能的试验对比研究  

An Experimental Comparative Study on the Microstructure and Properties of 5356 Aluminum Alloy Welding Wires

作　　者：罗健[1] 蹇海根[1] 丁智辉 唐娴敏[1] 

机构地区：[1]湖南工业大学冶金与材料工程学院,湖南株洲412007 [2]湖南德润有色焊材科技有限公司,湖南株洲412000

出　　处：《湖南工业大学学报》2016年第5期92-96,共5页Journal of Hunan University of Technology

摘　　要：通过金相、扫描、硬度及拉伸试验等测试分析手段,对自制焊丝(1#)、国产焊丝(2#)和进口焊丝(3#)3种5356铝合金焊丝的表面质量、显微组织以及力学性能进行了对比分析研究。试验结果表明:由于成分配比、杂质含量、加工方法等原因,3#焊丝表面均匀光滑,无裂纹、划痕等显著缺陷,表面质量和力学性能最优;1#焊丝表面存在细微裂纹,晶粒细小均匀分布,表面质量和力学性能次之;2#焊丝表面粗糙,有凹坑及麻点等缺陷,表面质量和力学性能最差。An experimental comparative investigation has been made of the surface quality, microstructure and me- chanical properties of three different types of aluminum alloy welding wires, namely, self-made wires （1 #）, domestic wires （2#） and imported wires （3#） by using such testing methods as microscopy, scanning, hardness test and tensile test, etc. The experimental results show that, due to their different component ratios, impurity contents, and processing methods, 3# welding wires exhibit such excellent properties as optimum surface quality and mechanical properties, lacking of such obvious defects as cracks and scratches. Fine cracks can be found on the surface of 1# wire with fine grains uniformly distributed, thus making its surface quality and mechanical properties slightly inferior; 2# wire is characterized with such defects as pits and pittings on a rough surface, thus making it the most inferior as regard to its surface quality and mechanical properties.

关 键 词：5356铝合金焊丝 连续挤压 微观组织 力学性能 

分 类 号：TG422.3[金属学及工艺—焊接]