the microstructural evolution of vacuum brazed 1cr18ni9ti using various filler metals
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2017
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Abstract
The microstructures and weldability of a brazed joint of 1Cr18Ni9Ti austenitic stainless steel with BNi-2, BNi82CrSiBFe and BMn50NiCuCrCo filler metals in vacuum were investigated. It can be observed that an interdiffusion region existed between the filler metal and the base metal for the brazed joint of Ni-based filler metals. The width of the interdiffusion region was about 10 μm, and the microstructure of the brazed joint of BNi-2 filler metal was dense and free of obvious defects. In the case of the brazed joint of BMn50NiCuCrCo filler metal, there were pits, pores and crack defects in the brazing joint due to insufficient wettability of the filler metal. Crack defects can also be observed in the brazed joint of BNi82CrSiBFe filler metal. Compared with BMn50NiCuCrCo and BNi82CrSiBFe filler metals, BNi-2 filler metal is the best material for 1Cr18Ni9Ti austenitic stainless steel vacuum brazing because of its distinct weldability.
| Reference Key |
chen2017materialsthe
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|---|---|
| Authors | ;Yunxia Chen;Haichao Cui;Binfeng Lu;Fenggui Lu |
| Journal | Nature Materials |
| Year | 2017 |
| DOI |
10.3390/ma10040385
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| URL | |
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