Brazing ZrB₂-SiC ceramics to Ti6Al4V alloy with TiCu-based amorphous filler
Liu, Yaping; Wang, Gang; Cao, Wei; Xu, Haitao; Huang, Zhongjia; Zhu, Dongdong; Tan, Caiwang (2017-10-25)
Yaping Liu, Gang Wang, Wei Cao, Haitao Xu, Zhongjia Huang, Dongdong Zhu, Caiwang Tan, Brazing ZrB2-SiC ceramics to Ti6Al4V alloy with TiCu-based amorphous filler, In Journal of Manufacturing Processes, Volume 30, 2017, Pages 516-522, ISSN 1526-6125, https://doi.org/10.1016/j.jmapro.2017.10.021
© 2017 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
In this work, the Ti-6Al-4V alloy and ZrB₂-SiC ultra-high temperature ceramic joint was brazed by TiCuZrNi amorphous filler at 910 °C with varied holding time. The element diffusion, microstructure and precipitation phase of the joints were analyzed in details. Reaction products in the joints were identified as β-Ti, (Ti,Zr)₂(Cu,Ni), TiCu, Ti₂Cu, TiC, Ti₅Si₃, TiB and TiB₂. The formation schemes of reaction products were investigated. The holding time has substantial impacts on interfacial microstructure and shear strength of joints. A maximum shear strength of 345 MPa of the joint was reached under a brazing temperature of 910 °C and holding time of 1200 s. It is also found that the shear strength depends on the amount of eutectic structure and brittle compounds in the joints.
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