Skip to Main content Skip to Navigation
Journal articles

Microstructure development during isothermal brazing of Ni/BNi-2 couples

Abstract : Heat treatments of the Ni-BNi-2 assemblies were performed at 1050 degrees C, for different brazing times, in a Differential thermal analysis apparatus. The nature, chemical composition and crystallography of the involved phases were identified. Limited predictive capability of Thermo-Calc software with the TTNI7 data base (developed for Ni-based alloys) was pointed out. The microstructure evolution with brazing time was quantitatively analyzed, and used to discuss the mechanism of isothermal brazing and further solidification during cooling. The fraction of dissolved base metal was found proportional to the initial thickness of brazing material. This suggests that the composition of liquid stays homogeneous with a precise initial equilibrium composition during the brazing process. Finally a specific analysis of DTA curves is proposed to estimate the brazing kinetics.
Document type :
Journal articles
Complete list of metadata

https://hal.univ-lorraine.fr/hal-01501849
Contributor : Lem3 Ul <>
Submitted on : Tuesday, April 4, 2017 - 4:15:54 PM
Last modification on : Thursday, March 11, 2021 - 2:24:17 PM

Identifiers

Citation

J. Ruiz-Vargas, Nathalie Siredey-Schwaller, Nathalie Gey, P. Bocher, Alain Hazotte. Microstructure development during isothermal brazing of Ni/BNi-2 couples. Journal of Materials Processing Technology, Elsevier, 2013, 213 (1), pp.20-29. ⟨10.1016/j.jmatprotec.2012.07.016⟩. ⟨hal-01501849⟩

Share

Metrics

Record views

608