连接温度对高铌TiAl合金扩散接头组织和强度的影响

Panfei Bao; Xiaoguo Song; Xinbo Wang; Shengpeng Hu; Heli Peng; Zhongquan Li

连接温度对高铌TiAl合金扩散接头组织和强度的影响

Translated title of the contribution: Effect of Bonding Temperature on Microstructure and Strength of High Nb Containing TiAl Alloy Diffusion Joints

Panfei Bao
, Xiaoguo Song^*
, Xinbo Wang
, Shengpeng Hu
, Heli Peng
, Zhongquan Li

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Institute of Technology Weihai
Shanghai Aerospace Precision Machinery Institute

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

2 Scopus citations

Abstract

The direct diffusion bonding of high Nb containing TiAl alloy (TAN) was conducted at temperatures of 1000~1200℃ for 90 min under 25 MPa in vacuum. The effect of bonding temperature on interfacial microstructure and mechanical property of joints was studied and the microstructure of joints was analyzed by SEM, EDS, XRD and EBSD. The results indicate that the distinct interface can be seen when the temperature is below 1100℃, and the temperature higher than 1100℃ promotes disappearance of the interface; recrystallized grains are observed at bonding interface. The number and size of grains increase with the increase of temperature and a lot of α₂ phases appear in the area of recrystallization; when the connection temperature reaches 1150℃, the average shear strength of joints reaches a maximum of 105 MPa.

Translated title of the contribution	Effect of Bonding Temperature on Microstructure and Strength of High Nb Containing TiAl Alloy Diffusion Joints
Original language	Chinese (Traditional)
Pages (from-to)	2132-2136
Number of pages	5
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	47
Issue number	7
State	Published - 1 Jul 2018

Cite this

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title = "连接温度对高铌TiAl合金扩散接头组织和强度的影响",

abstract = "The direct diffusion bonding of high Nb containing TiAl alloy (TAN) was conducted at temperatures of 1000\textasciitilde{}1200℃ for 90 min under 25 MPa in vacuum. The effect of bonding temperature on interfacial microstructure and mechanical property of joints was studied and the microstructure of joints was analyzed by SEM, EDS, XRD and EBSD. The results indicate that the distinct interface can be seen when the temperature is below 1100℃, and the temperature higher than 1100℃ promotes disappearance of the interface; recrystallized grains are observed at bonding interface. The number and size of grains increase with the increase of temperature and a lot of α2 phases appear in the area of recrystallization; when the connection temperature reaches 1150℃, the average shear strength of joints reaches a maximum of 105 MPa.",

keywords = "Diffusion bonding, High Nb containing TiAl alloy, Mechanical property, Microstructure",

author = "Panfei Bao and Xiaoguo Song and Xinbo Wang and Shengpeng Hu and Heli Peng and Zhongquan Li",

year = "2018",

month = jul,

day = "1",

language = "繁体中文",

volume = "47",

pages = "2132--2136",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

number = "7",

}

TY - JOUR

T1 - 连接温度对高铌TiAl合金扩散接头组织和强度的影响

AU - Bao, Panfei

AU - Song, Xiaoguo

AU - Wang, Xinbo

AU - Hu, Shengpeng

AU - Peng, Heli

AU - Li, Zhongquan

PY - 2018/7/1

Y1 - 2018/7/1

N2 - The direct diffusion bonding of high Nb containing TiAl alloy (TAN) was conducted at temperatures of 1000~1200℃ for 90 min under 25 MPa in vacuum. The effect of bonding temperature on interfacial microstructure and mechanical property of joints was studied and the microstructure of joints was analyzed by SEM, EDS, XRD and EBSD. The results indicate that the distinct interface can be seen when the temperature is below 1100℃, and the temperature higher than 1100℃ promotes disappearance of the interface; recrystallized grains are observed at bonding interface. The number and size of grains increase with the increase of temperature and a lot of α2 phases appear in the area of recrystallization; when the connection temperature reaches 1150℃, the average shear strength of joints reaches a maximum of 105 MPa.

AB - The direct diffusion bonding of high Nb containing TiAl alloy (TAN) was conducted at temperatures of 1000~1200℃ for 90 min under 25 MPa in vacuum. The effect of bonding temperature on interfacial microstructure and mechanical property of joints was studied and the microstructure of joints was analyzed by SEM, EDS, XRD and EBSD. The results indicate that the distinct interface can be seen when the temperature is below 1100℃, and the temperature higher than 1100℃ promotes disappearance of the interface; recrystallized grains are observed at bonding interface. The number and size of grains increase with the increase of temperature and a lot of α2 phases appear in the area of recrystallization; when the connection temperature reaches 1150℃, the average shear strength of joints reaches a maximum of 105 MPa.

KW - Diffusion bonding

KW - High Nb containing TiAl alloy

KW - Mechanical property

KW - Microstructure

UR - https://www.scopus.com/pages/publications/85055692402

M3 - 文章

AN - SCOPUS:85055692402

SN - 1002-185X

VL - 47

SP - 2132

EP - 2136

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 7

ER -

连接温度对高铌TiAl合金扩散接头组织和强度的影响

Abstract

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