Brazing Ti-48Al-2Nb-2Cr alloys with Cu-based amorphous alloy filler
|Author:||Wang, Gang1,2; Wu, Peng1; Wang, Wei3;|
1School of Mechanical and Automotive Engineering, Anhui Polytechnic University, Wuhu 241000, China
2Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FIN-90014 Oulu, Finland
3School of Mechanical Engineering, Anhui Machine and Electricity College,Wuhu 241002, China
4School of Mechanical Engineering, Quzhou University, Quzhou 324000, China
5State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
|Online Access:||PDF Full Text (PDF, 2.1 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2018061325838
Multidisciplinary Digital Publishing Institute,
|Publish Date:|| 2018-06-13
In this work, the Ti-48Al-2Nb-2Cr (at. %) alloy was successfully brazed using a Cu-based amorphous filler in 600 s under varied brazing temperatures. The element diffusion, microstructure, and precipitation phase of the joints are analyzed in detail, and the formation schemes are discussed. Reaction products in the joints are found as AlCuTi, Ti2Al, α-Ti, and (Ti,Zr)2(Cu,Ni). The interfacial microstructures varied subjected to the brazing temperature, while the shear strength of the joint firstly increased, and then accordingly decreased. The maximum shear strength of 266 MPa was reached under a brazing temperature of 1213 K and a holding time of 600 s. A formation mechanism was proposed to explain the shear strength variation following the width and amount of brittle compounds in the interfacial reaction layer.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
This work was supported by the National Natural Science Foundation of China [grant numbers 51704001 and 51501100], Key Project of Natural Science of Education Department of Anhui Province [grant numbers KJ2018A0860 and KJ2016A060], Talent Project of Anhui Province [grant number gxyqZD2016126] and the Open Fund of State Key Laboratory of Advanced Welding and Joining [grant number AWJ-16-M04]. W. Cao acknowledges financial supports from the profile funding of the Academy of Finland.
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).