Shear strength and fracture characteristics of the Al2O3-TiC/Q235 vacuum diffusion bonded joint

被引：5

作者：

Huang, Wanqun ^{[1
]}

Li, Yajiang ^{[2
]}

Wang, Juan ^{[2
]}

机构：

[1] China Univ Petr East China, Coll Mech & Elect Engn, Qingdao 266580, Shandong, Peoples R China

[2] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Shandong, Peoples R China

来源：

KOVOVE MATERIALY-METALLIC MATERIALS | 2016年 / 54卷 / 01期

关键词：

ceramic matrix composites (CMC); diffusion bonding; microstructure; shear strength; fracture;

D O I：

10.4149/km_2016_1_55

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Diffusion bonding of composite ceramics Al2O3-TiC to low carbon steel Q235 has been carried out by using Ti/Cu/Ti as multi-interlayer. The microstructure and fracture morphology of Al2O3-TiC/Q235 diffusion bonded joint were studied via scanning electron microscopy and electron probe microanalysis. The results indicate that an interfacial transition zone was formed between Al2O3-TiC and Q235. The Al2O3-TiC/Q235 diffusion bonded joints were produced with the shear strength of 111 MPa. As the Al2O3-TiC/Q235 joint was subjected to a shear force, only elastic deformation occurred, since the load-displacement curve is a typical brittle fracture curve of the ceramics. It shows that the fracture occurred inside the Al2O3-TiC ceramics, and the strength of the interfacial transition zone is higher than that of the Al2O3-TiC ceramics. The morphology of the fracture surfaces in the Al2O3-TiC ceramics possesses typical features with a mirror region, a mist region, and a hackle region.

引用

页码：55 / 60

页数：6

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