The Microstructural Evolution of Vacuum Brazed 1Cr18Ni9Ti Using Various Filler Metals

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 joi...

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Autores principales: Chen, Yunxia, Cui, Haichao, Lu, Binfeng, Lu, Fenggui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5506930/
https://www.ncbi.nlm.nih.gov/pubmed/28772745
http://dx.doi.org/10.3390/ma10040385
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author Chen, Yunxia
Cui, Haichao
Lu, Binfeng
Lu, Fenggui
author_facet Chen, Yunxia
Cui, Haichao
Lu, Binfeng
Lu, Fenggui
author_sort Chen, Yunxia
collection PubMed
description 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.
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spelling pubmed-55069302017-07-28 The Microstructural Evolution of Vacuum Brazed 1Cr18Ni9Ti Using Various Filler Metals Chen, Yunxia Cui, Haichao Lu, Binfeng Lu, Fenggui Materials (Basel) Article 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. MDPI 2017-04-05 /pmc/articles/PMC5506930/ /pubmed/28772745 http://dx.doi.org/10.3390/ma10040385 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Yunxia
Cui, Haichao
Lu, Binfeng
Lu, Fenggui
The Microstructural Evolution of Vacuum Brazed 1Cr18Ni9Ti Using Various Filler Metals
title The Microstructural Evolution of Vacuum Brazed 1Cr18Ni9Ti Using Various Filler Metals
title_full The Microstructural Evolution of Vacuum Brazed 1Cr18Ni9Ti Using Various Filler Metals
title_fullStr The Microstructural Evolution of Vacuum Brazed 1Cr18Ni9Ti Using Various Filler Metals
title_full_unstemmed The Microstructural Evolution of Vacuum Brazed 1Cr18Ni9Ti Using Various Filler Metals
title_short The Microstructural Evolution of Vacuum Brazed 1Cr18Ni9Ti Using Various Filler Metals
title_sort microstructural evolution of vacuum brazed 1cr18ni9ti using various filler metals
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5506930/
https://www.ncbi.nlm.nih.gov/pubmed/28772745
http://dx.doi.org/10.3390/ma10040385
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