Journal
INTERMETALLICS
Volume 57, Issue -, Pages 7-16Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2014.09.010
Keywords
Titanium aluminides, based on TiAl; Amorphous metals; Bonding; Fracture; Brazing; Microstructure
Categories
Funding
- Research Project of Special Furnishment and Part [XZJQ-B1120680]
- Research Foundation of State Key Laboratory of Advanced Welding and joining [AWJ-Z14-02]
Ask authors/readers for more resources
An amorphous Ti41.7-Zr26.7-Cul4.7-Ni13.8-Co3.1 (wt%) ribbon fabricated by melt spinning was used as filler to vacuum braze Ti-48Al-2Nb-2Cr (at%) intermetallics. The influences of brazing temperature and time on the microstructure and strength of the joints were investigated. It is found that intermetallic phases of Ti3Al and gamma-Ti2Cu/Ti2Ni form in the brazed joints. The tensile strength of the joint first increases and then decreases with the increase of the brazing temperature in the range of 900-1050 degrees C and the brazing time varying from 3 to 15 min. The maximum tensile strength at room temperature is 316 MPa when the joint is brazed at 950 degrees C for 5 min. Cleavage facets are widely observed on all of the fracture surfaces of the brazed joints. The fracture path varies with the brazing condition and cracks prefer to initiate at locations with relatively high content of gamma-Ti2Cu/Ti2Ni phases and propagate through them. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available