University of Oulu

Gang Wang, Yunlong Yang, Peng Wu, Da Shu, Dongdong Zhu, Caiwang Tan, Wei Cao, Effect of brazing temperature on microstructure and mechanical properties of TiAl/ZrB2 joint brazed with CuTiZrNi filler, Journal of Manufacturing Processes, Volume 46, 2019, Pages 170-176, ISSN 1526-6125, https://doi.org/10.1016/j.jmapro.2019.09.001

Effect of brazing temperature on microstructure and mechanical properties of TiAl/ZrB2 joint brazed with CuTiZrNi filler

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Author: Wang, Gang1; Yang, Yunlong1; Wu, Peng1;
Organizations: 1Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University, Wuhu 241000, China
2Key Laboratory of Air-Dirven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, China
3State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
4Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, Oulu, 90014, Finland
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2019100932075
Language: English
Published: Elsevier, 2019
Publish Date: 2021-09-10
Description:

Abstract

The TiAl alloy and ZrB2-SiC ceramic are promising materials used at high temperature. One route to extend their unique applications under extreme conditions relies on successful brazing them together with proper fillers. In this work, brazing temperature influences on microstructural, mechanical, and fractural properties were systemically studied for brazed joints after brazing the TiAl to the ZrB2-SiC with amorphous CuTiZrNi fillers. An optimized brazing condition was found as 1183 K for 1200s, yielding a high shear strength of 187 MPa. The joints were mainly consisted of AlCuTi, Ti2Al, (Ti,Zr)2(Cu,Ni), TiB, TiB2, TiCu Ti5Si3, and TiC phases. Brazing temperature substantially changed joint composites. It is found that lower temperatures lead to insufficient reaction and remained filler and higher ones to large stress-induced microcracks. Based on element diffusions, a formation mechanism of brazed joint was also proposed.

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Series: Journal of manufacturing processes
ISSN: 1526-6125
ISSN-E: 2212-4616
ISSN-L: 1526-6125
Volume: 46
Pages: 170 - 176
DOI: 10.1016/j.jmapro.2019.09.001
OADOI: https://oadoi.org/10.1016/j.jmapro.2019.09.001
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Subjects:
Funding: This work was financially supported by the National Natural Science Foundation of China [51704001]; Natural Science Foundation of Anhui Province [1908085ME128, KJ2018A0860, KJ2018A0123, KJ2018A0113]; Talent Project of Anhui Polytechnic University; and Talent Project of Anhui Province [Z175050020001]. W.C. acknowledges financial supports from the Academy of Finland [No. 311934] and the Anhui Provincial Grant for high-level platform construction.
Copyright information: © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
  https://creativecommons.org/licenses/by-nc-nd/4.0/