摘要
选择4种焊丝(UMCo50、ERNi Cr-3、GH188、ERNiCrCoMo-1)作为填充材料,采用手工TIG焊方法制备UMCo50和Inconel600的异种合金焊接试样。采用高温瞬时拉伸试验、高温持久拉伸试验、高温腐蚀试验、高温氧化试验以及金相显微组织分析方法,研究了不同焊丝对UMCo50和Inconel600异种合金焊接接头微观组织及性能的影响。试验结果表明:高温瞬时拉伸和高温持久拉伸试验条件下,焊接接头的断裂位置均发生在Inconel600母材一侧,4种焊丝中GH188焊缝的强度最高,其次是ERNiCrCoMo-1和UMCo50,ERNiCr-3的强度最低;4种焊丝制备的焊缝在抗氧化性方面差别不大,其中UMCo50较好;ERNiCr-3焊缝耐高温腐蚀能力最强,GH188焊缝耐高温腐蚀能力最差。
Four kinds of welding wires such as UMCo50, ERNiCr-3, GH188 and ERNiCrCoMo-1 were selected as filler materials to weld UMCo50/Inconel600 alloy using manual argon TIG welding technology, and the effects of different welding wires on microstructure and properties of UMCo50 and Inconel600 dissimilar alloy welded joint were studied by high temperature instantaneous tensile test, high temperature enduring tensile test, high temperature corrosion test, high temperature oxidation test and microstructure analysis.The test results show that the fracture position of all welded joints occurs on one side of inconel600 base metal under both high temperature instantaneous tensile test and high temperature enduring tensile test conditions. The weld with GH188 wire has the highest strength among the four kinds of welding wires, followed by ERNiCrCoMo-1 and UMCo50, and the weld with ERNiCr-3 wire has the lowest strength. The weld welded by the four kinds of welding wires has not great difference in oxidation resistance, the oxidation resistance of the weld welded by UMCo50 is better.The weld with ERNiCr-3 wire has the strongest high temperature corrosion resistance, while the weld with GH188 wire is the worst.
作者
薛海涛
唐强
颜超
郭卫兵
王福海
XUE Haitao;TANG Qiang;YAN Chao;GUO Weibing;WANG Fuhai(Collge of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China;Bijing Aerospace Propulsion Institute,China Acrospace Science and Technology Corporation,Beiing100076,China)
出处
《热加工工艺》
北大核心
2020年第13期42-45,49,共5页
Hot Working Technology
