摘要
分析了HP45NbTi高温合金炉管的焊接性,采用N iR82镍基焊丝手工钨极氩弧焊打底、25-35Nb焊丝填充并盖面的焊接工艺,焊接了外径125 mm、壁厚11 mm的离心铸造HP45NbTi高温合金炉管对接接头,获得了常温和高温下都满足使用要求的焊接接头,并分析了焊接前后组织的分布情况。
The weldability of centrifugally casting heat resistant alloy HP45NbTi was investigated. The HP45NbTi furnace tubes with thickness of 11 mm and outer diameter of 125 mm were butt-welded using a combined process. The root passes were welded by manual TIG welding with nickel based alloy wire NiR82, the subsequent filling and top passes with wire 25-35Nb. The mechanical properties of welded joint were examined and were up to the mustard. The microstructure of the joints was also observed and analyzed before and after welding.
出处
《焊接》
北大核心
2006年第8期22-26,共5页
Welding & Joining
关键词
显微组织
高温合金
HP合金
炉管
microstructure, high-temperature alloy, HP alloy, furnace tube
