Interfacial microstructure and joining properties of TiAl/Ti3AlC2 diffusion bonded joints using Zr and Ni foils as interlayer

被引：35

作者：

Liu, Jiakun ^{[1
]}

Cao, Jian ^{[1
]}

Lin, Xingtao ^{[1
]}

Chen, Haiyan ^{[1
]}

Wang, Jun ^{[1
]}

Feng, Jicai ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China

来源：

VACUUM | 2014年 / 102卷

基金：

中国国家自然科学基金;

关键词：

Intermetallics; Ceramics; Bonding; Microstructure; Mechanical properties; SINGLE-PHASE TI3ALC2; MECHANICAL-PROPERTIES; COMBUSTION SYNTHESIS; TIAL ALLOY; AL; INTERMETALLICS; EVOLUTION; STRENGTH; TI3SIC2; STEEL;

D O I：

10.1016/j.vacuum.2013.10.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Diffusion bonding of TiAl intermetallic to Ti3AlC2 ceramic was carried out using Zr and Ni foils as interlayer. The interfacial microstructure and joining properties were characterized by electronic microscopy investigation and shear strength test, respectively. The microstructure observations revealed that the general interfacial microstructure of the joint bonded at 850 degrees C was consisted of gamma-TiAl + iota(3)-Al3NiTi2, iota(3)-Al3NiTi2, iota(4)-AlNi2Ti, iota(4)-AlNi2Ti + Ni10Zr7, Ni7Zr2, Ni5Zr, Ni, Ni-3(Al,Ti), Ni-3(Al,Ti) + Ti3AlC2 from TiAl to Ti3AlC2. The bonding temperature had a great influence on the diffusion and reaction of Ni with other elements, generating different interfacial morphology of joints. The shear test results showed that the maximum shear strength reached 103.6 MPa. Fracture occurred along the ceramic substrate adjacent to the bonding interface, showing a brittle intergranular and transgranular fracture mode. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：16 / 25

页数：10

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