Assessing mechanical properties of the dissimilar metal welding between P92 steels and alloy 617 at high temperature
Journal of Mechanical Science and Technology(2016)
摘要
In this study, a new welding technology of dissimilar materials, Cr-based P92 steels and Ni-based Alloy 617 is introduced and demonstrated to investigate its reliability. Firstly, multi-pass dissimilar metal welding between P92 steel and Alloy 617 was performed using DCEN TIG welding technology, buttering welding technique and a narrow gap groove. After welding, in order to understand characteristics of the dissimilar metal welds, metallurgical micro-structures analysis by optical observation and static tensile strength assessment of the dissimilar welded joints were conducted at 700°C.
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关键词
Dissimilar metal welding, Buttering welding, Narrow gap, P92 steels, Alloy 617, The hardness, Micro-structure, High temperature strength
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