[Kovove materialy - Metallic materials]
    Sun - April 02, 2023 - 04:39 No. of hits : 1438769 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 54 (2016), Issue 1

Shear strength and fracture characteristics of the Al2O3-TiC/Q235 vacuum diffusion bonded joint
vol. 54 (2016), no. 1, pp. 55 - 60
DOI: 10.4149/km_2016_1_55

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.

Key words
ceramic matrix composites (CMC), diffusion bonding, microstructure, shear strength, fracture

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

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