Nano-diffusion bonding of Ti2AlNb to Ni-based superalloy

H. S. Ren; X. Y. Ren; H. P. Xiong; W. W. Li; S. J. Pang; A. I. Ustinov

doi:10.1016/j.matchar.2019.109813

Nano-diffusion bonding of Ti₂AlNb to Ni-based superalloy

H. S. Ren
, X. Y. Ren
, H. P. Xiong^*
, W. W. Li
, S. J. Pang
, A. I. Ustinov

^*Corresponding author for this work

School of Materials Science and Engineering

Beijing Institute of Aeronautical Materials
NASU - Paton Electric Welding Institute

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

38 Scopus citations

Abstract

Ti₂AlNb alloys are one of the most promising structural materials with potential applications in aero-engines. Dissimilar joining of Ti₂AlNb alloy to Ni-based superalloy was carried out with diffusion bonding method using Cu + Ti composite foil and Cu/Ti nano-laminated foil, respectively. Joint microstructures were analyzed with SEM, EPMA, XRD and TEM. The joint bonded with Cu + Ti composite foils presented shear strength of 114–167 MPa at room temperature. For the joint bonded with Cu/Ti nano-laminated interlayer, Ti₂Cu rather than TiCu reactive layer was visible and the sizes of phases were about 0.5–2 μm. A larger area of α-Ti phase was formed and the thickness of intermetallic compounds area decreased from the 35 μm to 18 μm. Raising bonding temperature could enhance the metallurgical bonding and improve the bonding quality. The joints bonded at 900 °C/20 min/20 MPa presented the maximum shear strength of 305 MPa, increased about 82% compared with the Cu + Ti composite foil.

Original language	English
Article number	109813
Journal	Materials Characterization
Volume	155
DOIs	https://doi.org/10.1016/j.matchar.2019.109813
State	Published - Sep 2019

Keywords

Diffusion bonding
Mechanical properties
Microstructure
Nano-laminated foil
TiAlNb

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10.1016/j.matchar.2019.109813

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@article{6a75e049325e4ebb82d90e2c0c9e3a1c,

title = "Nano-diffusion bonding of Ti2AlNb to Ni-based superalloy",

abstract = "Ti2AlNb alloys are one of the most promising structural materials with potential applications in aero-engines. Dissimilar joining of Ti2AlNb alloy to Ni-based superalloy was carried out with diffusion bonding method using Cu + Ti composite foil and Cu/Ti nano-laminated foil, respectively. Joint microstructures were analyzed with SEM, EPMA, XRD and TEM. The joint bonded with Cu + Ti composite foils presented shear strength of 114{\textendash}167 MPa at room temperature. For the joint bonded with Cu/Ti nano-laminated interlayer, Ti2Cu rather than TiCu reactive layer was visible and the sizes of phases were about 0.5{\textendash}2 μm. A larger area of α-Ti phase was formed and the thickness of intermetallic compounds area decreased from the 35 μm to 18 μm. Raising bonding temperature could enhance the metallurgical bonding and improve the bonding quality. The joints bonded at 900 °C/20 min/20 MPa presented the maximum shear strength of 305 MPa, increased about 82\% compared with the Cu + Ti composite foil.",

keywords = "Diffusion bonding, Mechanical properties, Microstructure, Nano-laminated foil, TiAlNb",

author = "Ren, \{H. S.\} and Ren, \{X. Y.\} and Xiong, \{H. P.\} and Li, \{W. W.\} and Pang, \{S. J.\} and Ustinov, \{A. I.\}",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2019",

month = sep,

doi = "10.1016/j.matchar.2019.109813",

language = "英语",

volume = "155",

journal = "Materials Characterization",

issn = "1044-5803",

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}

TY - JOUR

T1 - Nano-diffusion bonding of Ti2AlNb to Ni-based superalloy

AU - Ren, H. S.

AU - Ren, X. Y.

AU - Xiong, H. P.

AU - Li, W. W.

AU - Pang, S. J.

AU - Ustinov, A. I.

PY - 2019/9

Y1 - 2019/9

N2 - Ti2AlNb alloys are one of the most promising structural materials with potential applications in aero-engines. Dissimilar joining of Ti2AlNb alloy to Ni-based superalloy was carried out with diffusion bonding method using Cu + Ti composite foil and Cu/Ti nano-laminated foil, respectively. Joint microstructures were analyzed with SEM, EPMA, XRD and TEM. The joint bonded with Cu + Ti composite foils presented shear strength of 114–167 MPa at room temperature. For the joint bonded with Cu/Ti nano-laminated interlayer, Ti2Cu rather than TiCu reactive layer was visible and the sizes of phases were about 0.5–2 μm. A larger area of α-Ti phase was formed and the thickness of intermetallic compounds area decreased from the 35 μm to 18 μm. Raising bonding temperature could enhance the metallurgical bonding and improve the bonding quality. The joints bonded at 900 °C/20 min/20 MPa presented the maximum shear strength of 305 MPa, increased about 82% compared with the Cu + Ti composite foil.

AB - Ti2AlNb alloys are one of the most promising structural materials with potential applications in aero-engines. Dissimilar joining of Ti2AlNb alloy to Ni-based superalloy was carried out with diffusion bonding method using Cu + Ti composite foil and Cu/Ti nano-laminated foil, respectively. Joint microstructures were analyzed with SEM, EPMA, XRD and TEM. The joint bonded with Cu + Ti composite foils presented shear strength of 114–167 MPa at room temperature. For the joint bonded with Cu/Ti nano-laminated interlayer, Ti2Cu rather than TiCu reactive layer was visible and the sizes of phases were about 0.5–2 μm. A larger area of α-Ti phase was formed and the thickness of intermetallic compounds area decreased from the 35 μm to 18 μm. Raising bonding temperature could enhance the metallurgical bonding and improve the bonding quality. The joints bonded at 900 °C/20 min/20 MPa presented the maximum shear strength of 305 MPa, increased about 82% compared with the Cu + Ti composite foil.

KW - Diffusion bonding

KW - Mechanical properties

KW - Microstructure

KW - Nano-laminated foil

KW - TiAlNb

UR - https://www.scopus.com/pages/publications/85068563170

U2 - 10.1016/j.matchar.2019.109813

DO - 10.1016/j.matchar.2019.109813

M3 - 文章

AN - SCOPUS:85068563170

SN - 1044-5803

VL - 155

JO - Materials Characterization

JF - Materials Characterization

M1 - 109813

ER -

Nano-diffusion bonding of Ti₂AlNb to Ni-based superalloy

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Keywords

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