Investigation on microstructure and mechanical properties of GH5188 superalloy TLP joints using nickel based alloy interlayer

Wei Guo; Jingru Xin; Long Gao; Jinzheng Li; Wei Liu; Ding Hao; Yana Ma; Jiangtao Xiong; Jinglong Li

doi:10.1016/j.msea.2024.146827

Investigation on microstructure and mechanical properties of GH5188 superalloy TLP joints using nickel based alloy interlayer

Wei Guo
, Jingru Xin
, Long Gao
, Jinzheng Li
, Wei Liu
, Ding Hao
, Yana Ma
, Jiangtao Xiong
, Jinglong Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian
The First-Military Representative Office of the Air Force Equipment Department in Xi'an

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

GH5188 was bonded successfully with a commercial BNi-2 interlayer through transient liquid phase (TLP) diffusion bonding. The characteristic bonded joint was formed by following three characteristic zones: diffusion affected zone (DAZ) mainly consisting of boride precipitates, athermal solidification zone (ASZ) composed of multiple silica-boride phases and isothermal solidification zone (ISZ) containing γ solid solution phases. As the holding time increases, ISZ gradually replaced ASZ and a defect-free joints was obtained then. However, excessive holding time can cause ASZ to reappear because of the extravagant dissolution of the base metal. The joints’ shear strength from 574 MPa (1190 °C/5 min) increased to 777 MPa (1190 °C/60 min), and the fracture location shifted from ASZ to DAZ with the fracture mode transferred from cleavage fracture to mixed fracture.

Original language	English
Article number	146827
Journal	Materials Science and Engineering: A
Volume	909
DOIs	https://doi.org/10.1016/j.msea.2024.146827
State	Published - Sep 2024

Keywords

BNi-2 intelayer
GH5188
TLP

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10.1016/j.msea.2024.146827

Cite this

@article{96b3b98ac5234deeab6e1f5cd101ada3,

title = "Investigation on microstructure and mechanical properties of GH5188 superalloy TLP joints using nickel based alloy interlayer",

abstract = "GH5188 was bonded successfully with a commercial BNi-2 interlayer through transient liquid phase (TLP) diffusion bonding. The characteristic bonded joint was formed by following three characteristic zones: diffusion affected zone (DAZ) mainly consisting of boride precipitates, athermal solidification zone (ASZ) composed of multiple silica-boride phases and isothermal solidification zone (ISZ) containing γ solid solution phases. As the holding time increases, ISZ gradually replaced ASZ and a defect-free joints was obtained then. However, excessive holding time can cause ASZ to reappear because of the extravagant dissolution of the base metal. The joints{\textquoteright} shear strength from 574 MPa (1190 °C/5 min) increased to 777 MPa (1190 °C/60 min), and the fracture location shifted from ASZ to DAZ with the fracture mode transferred from cleavage fracture to mixed fracture.",

keywords = "BNi-2 intelayer, GH5188, TLP",

author = "Wei Guo and Jingru Xin and Long Gao and Jinzheng Li and Wei Liu and Ding Hao and Yana Ma and Jiangtao Xiong and Jinglong Li",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = sep,

doi = "10.1016/j.msea.2024.146827",

language = "英语",

volume = "909",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Investigation on microstructure and mechanical properties of GH5188 superalloy TLP joints using nickel based alloy interlayer

AU - Guo, Wei

AU - Xin, Jingru

AU - Gao, Long

AU - Li, Jinzheng

AU - Liu, Wei

AU - Hao, Ding

AU - Ma, Yana

AU - Xiong, Jiangtao

AU - Li, Jinglong

PY - 2024/9

Y1 - 2024/9

N2 - GH5188 was bonded successfully with a commercial BNi-2 interlayer through transient liquid phase (TLP) diffusion bonding. The characteristic bonded joint was formed by following three characteristic zones: diffusion affected zone (DAZ) mainly consisting of boride precipitates, athermal solidification zone (ASZ) composed of multiple silica-boride phases and isothermal solidification zone (ISZ) containing γ solid solution phases. As the holding time increases, ISZ gradually replaced ASZ and a defect-free joints was obtained then. However, excessive holding time can cause ASZ to reappear because of the extravagant dissolution of the base metal. The joints’ shear strength from 574 MPa (1190 °C/5 min) increased to 777 MPa (1190 °C/60 min), and the fracture location shifted from ASZ to DAZ with the fracture mode transferred from cleavage fracture to mixed fracture.

AB - GH5188 was bonded successfully with a commercial BNi-2 interlayer through transient liquid phase (TLP) diffusion bonding. The characteristic bonded joint was formed by following three characteristic zones: diffusion affected zone (DAZ) mainly consisting of boride precipitates, athermal solidification zone (ASZ) composed of multiple silica-boride phases and isothermal solidification zone (ISZ) containing γ solid solution phases. As the holding time increases, ISZ gradually replaced ASZ and a defect-free joints was obtained then. However, excessive holding time can cause ASZ to reappear because of the extravagant dissolution of the base metal. The joints’ shear strength from 574 MPa (1190 °C/5 min) increased to 777 MPa (1190 °C/60 min), and the fracture location shifted from ASZ to DAZ with the fracture mode transferred from cleavage fracture to mixed fracture.

KW - BNi-2 intelayer

KW - GH5188

KW - TLP

UR - https://www.scopus.com/pages/publications/85196509271

U2 - 10.1016/j.msea.2024.146827

DO - 10.1016/j.msea.2024.146827

M3 - 文章

AN - SCOPUS:85196509271

SN - 0921-5093

VL - 909

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 146827

ER -

Investigation on microstructure and mechanical properties of GH5188 superalloy TLP joints using nickel based alloy interlayer

Abstract

Keywords

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