摘要
Linear friction welding (LFW) was used with a single crystal nickel-based superalloy to produce sound welds. Microstructural examination shows that the joint has a distinct weld zone (WZ) and thermomechanically affected zone (TMAZ). In the WZ, the microstructure has recrystallized polycrystals instead of a single crystal. In the TMAZ, the amount of γ' phase increased from the TMAZ/WZ interface to the parent material (PM) and decreased from the periphery to the centre along the weld creating a U-shaped microhardness profile in the TMAZ. The microhardness is however lower than that in the WZ. The average tensile strength was found to be 837.5 ± 50. MPa, comparable to the PM (880. MPa [26]).
源语言 | 英语 |
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页(从-至) | 613-617 |
页数 | 5 |
期刊 | Materials and Design |
卷 | 85 |
DOI | |
出版状态 | 已出版 - 15 11月 2015 |