Interfacial microstructure and mechanical properties of TC4/Ti60 brazed joints

被引：0

作者：

Bian H. ^{[1
]}

Tian X. ^{[2
]}

Feng J. ^{[1
]}

Gao F. ^{[1
]}

Hu S. ^{[1
]}

机构：

[1] Harbin Institute of Technology, State Key Laboratory of Advanced Welding and Joining, Harbin

[2] Beijing Power Machinery Institute, Beijing

来源：

Hanjie Xuebao/Transactions of the China Welding Institution | 2018年 / 39卷 / 05期

关键词：

Interfacial microstructure; TC4; alloy; Ti60; TiZrNiCu amorphous filler alloy; Vacuum brazing;

D O I：

10.12073/j.hjxb.2018390117

中图分类号：

学科分类号：

摘要：

TC4 alloy and Ti60 alloy were brazed using TiZrNiCu amorphous filler alloy. Effects of the brazing process parameters on the interfacial microstructure and mechanical properties of the joints were studied. The interfacial microstructure and possible phases of the joints, as well as the fracture form of fractures, were detected by scanning electron microscope(SEM), energy dispersive spectrometer(EDS) and X-ray diffraction(XRD). The results showed that the typical interfacial microstructure of TC4/Ti60 joint was TC4/α-Ti+β-Ti+(Ti,Zr)2(Ni,Cu)/Ti60. With increased brazing temperature or prolonged holding time, lamellar α+β microstructure filled the whole brazing seam gradually and (Ti,Zr)2(Ni,Cu) phase was distributed more evenly. With increasing of brazing temperature or holding time, tensile strength of the joints was first increased and then decreased. The highest tensile strength, 535.3 MPa, was obtained when the joints were brazed at 990 ℃ for 10 min. Fracture analysis indicated that the joints were fractured at brazing seam, which performed as brittle fracture. © 2018, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.

引用

页码：33 / 36and68

页数：3635

共 7 条

[1]

Chang C.T., Shiue R.K., Infrared brazing Ti-6Al-4V and Mo using the Ti-15Cu-15Ni braze alloy, International Journal of Refractory Metals and Hard Materials, 23, 3, pp. 161-170, (2005)

[2]

Chen H.S., Liu X.H., Liu G.F., Et al., Hot deformation behavior and processing map of Ti-6Al-3Nb-2Zr-1Mo titanium alloy, Rare Metal Materials and Engineering, 45, 4, pp. 901-906, (2016)

[3]

Wang G., Wu L., Li X., Et al., Microstructure and high temperature properties of TC4 titanium alloy vacuum brazed joint, Transactions of the China Welding Institution, 35, 6, pp. 100-104, (2014)

[4]

Ganjeh E., Sarkhosh H., Microstructural, mechanical and fracto-graphical study of titanium-CP and Ti-6Al-4V similar brazing with Ti-based filler, Materials Science and Engineering: A, 559, pp. 119-129, (2013)

[5]

Jia W., Zeng W., Liu J., Et al., Oxidation behavior of near α-titanium alloy Ti60, Rare Metal Materials and Engineering, 39, 5, pp. 781-786, (2010)

[6]

Chen G., Zhang B., Wu Z., Et al., Microstru-cture and mechanical properties of electron beam welded dissimilar TiAl/Ti60 joint, Transactions of the China Welding Institution, 30, 12, pp. 41-44, (2009)

[7]

Song X., Cao J., Li Z., Et al., Interracial microstructure and properties of Ti53311S titanium alloy joints brazed using TiZrNiCu filler metal, Rare Metal Materials and Engineering, 42, 8, pp. 1694-1699, (2013)

← 1 →