Si含量及热处理对4043铝合金焊丝堆焊层耐磨性的影响（英文）  

Effects of Si Content and Aging Temperature on Wear Resistance of Surfacing Layers Welded with 4043 Aluminum Welding Wires

作　　者：徐振[1] 赵志浩[1] 韩东月 陈庆强[1] 李展志 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110819 [2]捷安特轻合金科技(昆山)有限公司,江苏昆山215300

出　　处：《稀有金属材料与工程》2016年第1期71-74,共4页Rare Metal Materials and Engineering

基　　金：Fundamental Research Funds for the Central Universities(N120309002 and N130709001)

摘　　要：4043铝合金焊丝熔化后流动性良好,焊后不易产生结晶裂纹,广泛适用于6000系铝合金的焊接。利用4043铝合金焊丝在材料表面堆焊,可以修复部分材料表面出现的划伤与磨损。本研究使用4043铝合金焊丝,配合钨极惰性气体保护焊进行表面堆焊实验,采用金相显微镜,扫描电镜,硬度测试及耐磨性测试等分析检测手段研究了Si含量及热处理工艺对焊后堆焊层耐磨性的影响。结果表明,提高焊丝中Si含量可以增加共晶硅颗粒的数量。而热处理可以有效球化共晶硅颗粒,显著提高堆焊层的耐磨性。4043 aluminum welding wires are extensively used for welding 6000 series aluminum alloys due to the good flow ability of the fusion state and the low cracking tendency during welding process. Some scratches and wear on the surfaces of aluminum structural components can be repaired by surface welding with 4043 aluminum welding wires. In the present study, the influences of Si content and aging temperature on the wear resistance property of the surfacing layers welded by tungsten inert gas（TIG） welding using 4043 aluminum welding wires have been analyzed by optical microscopy, scanning electron microscopy, hardness testing and abrasive wear testing. The results show that the increase in Si content can increase the fraction of eutectic Si particles, and the heat treatment can spheroidize eutectic Si particles, resulting in further improving the wear resistance property of the surfacing layers.

关 键 词：表面堆焊 耐磨性 显微组织 性能 热处理 

分 类 号：TG455[金属学及工艺—焊接]