Journal of Alloys and Compounds, ( ISI ), Volume (731), No (1), Year (2018-1) , Pages (929-935)

Title : ( Effect of bonding time and homogenization heat treatment on the microstructure and mechanical properties of the transient liquid phase bonded dissimilar GTD-111/FSX-414 TLP superalloys )

Authors: Sepide Hadibeik Neishaboori , Behrooz Beidokhti , Seyed Abdolkarim Sajjadi ,

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Abstract

Dissimilar transient liquid phase joints were fabricated between Ni-based GTD-111 and Co-based FSX-414 superalloys using a 50mm thick amorphous NieSieB interlayer. The athermally solidified zone in the middle of joint contained the ternary eutectic ofg/Ni3B/Ni6Si2B and few amounts of Ni3Si. The amount of eutectic phase was decreased by increasing the bonding time. The complete isothermal solidification was obtained at the joining time of 100 min. The completion of isothermal solidification was controlled by several factors including the diffusion of Si and B from the bonding zone into the base metals, the diffusion of Ti, Al, Co and Cr from the base metals into the bonding zone and proportional re-distribution of them throughout the joint. The width of bonded zone (about 80mm) was greater than the thickness of interlayer due to the coupled diffusion and dissolution phenomena. After the homogenization heat treatment, an increase of 34% in shear strength of the joint was observed due to the uniform distribution of strengthening precipitates across the bonding area.

Keywords

Transient liquid phase Diffusion Superalloy Scanning electron microscopy
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@article{paperid:1065209,
author = {Hadibeik Neishaboori, Sepide and Beidokhti, Behrooz and Sajjadi, Seyed Abdolkarim},
title = {Effect of bonding time and homogenization heat treatment on the microstructure and mechanical properties of the transient liquid phase bonded dissimilar GTD-111/FSX-414 TLP superalloys},
journal = {Journal of Alloys and Compounds},
year = {2018},
volume = {731},
number = {1},
month = {January},
issn = {0925-8388},
pages = {929--935},
numpages = {6},
keywords = {Transient liquid phase Diffusion Superalloy Scanning electron microscopy},
}

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%0 Journal Article
%T Effect of bonding time and homogenization heat treatment on the microstructure and mechanical properties of the transient liquid phase bonded dissimilar GTD-111/FSX-414 TLP superalloys
%A Hadibeik Neishaboori, Sepide
%A Beidokhti, Behrooz
%A Sajjadi, Seyed Abdolkarim
%J Journal of Alloys and Compounds
%@ 0925-8388
%D 2018

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