Diffusion bonding joint of TiAl-based alloy and Ni-based alloy by using composite interlayer

Haixin Li; Tiesong Lin; Peng He; Jicai Feng; Xianjun Wang

Diffusion bonding joint of TiAl-based alloy and Ni-based alloy by using composite interlayer

Haixin Li
, Tiesong Lin
, Peng He^*
, Jicai Feng
, Xianjun Wang

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology

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

2 Scopus citations

Abstract

Diffusion bonding of TiAl-based alloy to Ni-based alloy by using Ti/Nb and Ti/Nb/Ni composite interlayer was carried out. The interfacial microstructure and fracture morphology were investigated by scanning electron microscopy and electron probe X-ray microanalysis. The bonding strength of the joints was evaluated through shear test. The results showed that when the interlayer was Ti/Nb, the optimum bonding time was t=30 min, the maximum shear strength was R_τ=273.8 MPa, and the fracture occured at the GH99/Nb interface; when the interlayer was Ti/Nb/Ni, the optimum bonding time was t=60 min, the maximum shear strength was R_τ=314.4 MPa, the fracture occured at Ti₃Al reaction layer of Ti/TiAl interlayer. The shear strength of the joints with Ti/Nb/Ni interlayer is higher than that with Ti/Nb interlayer, and the fracture location changes. It shows that the use of Ni foil has certain effect on relaxing joint stress.

Original language	English
Pages (from-to)	51-54
Number of pages	4
Journal	Hanjie Xuebao/Transactions of the China Welding Institution
Volume	33
Issue number	11
State	Published - Nov 2012

Keywords

Diffusion bonding
Interfacial microstructure
Shear strength

Cite this

@article{808851ecaf024a0c8380325234e84e52,

title = "Diffusion bonding joint of TiAl-based alloy and Ni-based alloy by using composite interlayer",

abstract = "Diffusion bonding of TiAl-based alloy to Ni-based alloy by using Ti/Nb and Ti/Nb/Ni composite interlayer was carried out. The interfacial microstructure and fracture morphology were investigated by scanning electron microscopy and electron probe X-ray microanalysis. The bonding strength of the joints was evaluated through shear test. The results showed that when the interlayer was Ti/Nb, the optimum bonding time was t=30 min, the maximum shear strength was Rτ=273.8 MPa, and the fracture occured at the GH99/Nb interface; when the interlayer was Ti/Nb/Ni, the optimum bonding time was t=60 min, the maximum shear strength was Rτ=314.4 MPa, the fracture occured at Ti3Al reaction layer of Ti/TiAl interlayer. The shear strength of the joints with Ti/Nb/Ni interlayer is higher than that with Ti/Nb interlayer, and the fracture location changes. It shows that the use of Ni foil has certain effect on relaxing joint stress.",

keywords = "Diffusion bonding, Interfacial microstructure, Shear strength",

author = "Haixin Li and Tiesong Lin and Peng He and Jicai Feng and Xianjun Wang",

year = "2012",

month = nov,

language = "英语",

volume = "33",

pages = "51--54",

journal = "Hanjie Xuebao/Transactions of the China Welding Institution",

issn = "0253-360X",

publisher = "Harbin Research Institute of Welding",

number = "11",

}

TY - JOUR

T1 - Diffusion bonding joint of TiAl-based alloy and Ni-based alloy by using composite interlayer

AU - Li, Haixin

AU - Lin, Tiesong

AU - He, Peng

AU - Feng, Jicai

AU - Wang, Xianjun

PY - 2012/11

Y1 - 2012/11

N2 - Diffusion bonding of TiAl-based alloy to Ni-based alloy by using Ti/Nb and Ti/Nb/Ni composite interlayer was carried out. The interfacial microstructure and fracture morphology were investigated by scanning electron microscopy and electron probe X-ray microanalysis. The bonding strength of the joints was evaluated through shear test. The results showed that when the interlayer was Ti/Nb, the optimum bonding time was t=30 min, the maximum shear strength was Rτ=273.8 MPa, and the fracture occured at the GH99/Nb interface; when the interlayer was Ti/Nb/Ni, the optimum bonding time was t=60 min, the maximum shear strength was Rτ=314.4 MPa, the fracture occured at Ti3Al reaction layer of Ti/TiAl interlayer. The shear strength of the joints with Ti/Nb/Ni interlayer is higher than that with Ti/Nb interlayer, and the fracture location changes. It shows that the use of Ni foil has certain effect on relaxing joint stress.

AB - Diffusion bonding of TiAl-based alloy to Ni-based alloy by using Ti/Nb and Ti/Nb/Ni composite interlayer was carried out. The interfacial microstructure and fracture morphology were investigated by scanning electron microscopy and electron probe X-ray microanalysis. The bonding strength of the joints was evaluated through shear test. The results showed that when the interlayer was Ti/Nb, the optimum bonding time was t=30 min, the maximum shear strength was Rτ=273.8 MPa, and the fracture occured at the GH99/Nb interface; when the interlayer was Ti/Nb/Ni, the optimum bonding time was t=60 min, the maximum shear strength was Rτ=314.4 MPa, the fracture occured at Ti3Al reaction layer of Ti/TiAl interlayer. The shear strength of the joints with Ti/Nb/Ni interlayer is higher than that with Ti/Nb interlayer, and the fracture location changes. It shows that the use of Ni foil has certain effect on relaxing joint stress.

KW - Diffusion bonding

KW - Interfacial microstructure

KW - Shear strength

UR - https://www.scopus.com/pages/publications/84878949071

M3 - 文章

AN - SCOPUS:84878949071

SN - 0253-360X

VL - 33

SP - 51

EP - 54

JO - Hanjie Xuebao/Transactions of the China Welding Institution

JF - Hanjie Xuebao/Transactions of the China Welding Institution

IS - 11

ER -

Diffusion bonding joint of TiAl-based alloy and Ni-based alloy by using composite interlayer

Abstract

Keywords

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