HUAI Junfeng, SHANG Yonglai, REN Haishui, et al.Research on the Brazing Process and Joint Properties of Ti150/TC19 Dissimilar Titanium Alloys[J].Electric Welding Machine, 2022, 52(6): 93-98.
HUAI Junfeng, SHANG Yonglai, REN Haishui, et al.Research on the Brazing Process and Joint Properties of Ti150/TC19 Dissimilar Titanium Alloys[J].Electric Welding Machine, 2022, 52(6): 93-98. DOI: 10.7512/j.issn.1001-2303.2022.06.11.
Research on the Brazing Process and Joint Properties of Ti150/TC19 Dissimilar Titanium Alloys
High temperature titanium alloy Ti150 was developed for the aero-engines with high thrust-weight ratio and with long-term service temperature of 600 ℃. TC19 is a two-phase (α+β) titanium alloy with high strength and toughness. The vacuum brazing process of the two titanium alloys was conducted using Ti-21Cu-13Zr-9Ni(,wt,.%)as filler metal. The joint microstructure and element distribution of joint were analyzed by means of SEM and EDS, meanwhile the tensile strength of the joint was measured at the room temperature and high temperatures by universal testing machine. The results showed that under the brazing condition of 930 ℃/35 min, the joint tensile strength at room temperature reached up to 955.3 MPa, and the strength of 540.0 MPa and 505.6 was maintained at 500 ℃ and 550 ℃, respectively. The tensile specimens at room temperature fractured within the brazed seam and the fractured surface exhibited brittle characteristics. The tensile specimens fractured within the Ti150 metal substrate when tested at 500 ℃ and 550 ℃, and plastic deformation was observed at the fractured surface.
关键词
Ti150高温钛合金TC19钛合金异种材料连接钎焊力学性能
Keywords
Ti150 high temperature titanium alloyTC19dissimilar material connectionbrazingmechanical properties
CAI Jianmin,LI Zhenxi ,MA Jimin,et al.Research and Development of 600 ℃ High Temperature Titanium Alloys for Aeroengine[J]. Materials Review,2005, 19(1): 50-53.
Chandler H. Heat Treater's guide,Practices and procedures for nonferrous alloy[M]. ASM: The Materials Information Society, 1996: 511-513.
Heberard X, Hourcade M, Ferriere G, et al. Low temperature brazing (680 ℃)to Ti-6%Al-4%V titanium alloy[J]. Titanium'80 Science and Technology, 1980: 2415-2422.
Kaarlela W T, Margolis W S. Development of the Ag-Al-Mn brazing filler metal for titanium[J]. Welding journal, 1974, 53: 629-636.
Well R R. Low temperature large-area brazing of damage tolerant titanium structures[J]. Welding Journal, 1975, 54(10): 348-356.
Onzawa T, Suzumura A, Ko M W. Brazing of titanium using low-melting-point Ti-based filler metals [J]. Welding Journal, 1990, 69(12): 462-467.
Pang S J, Sun L L, Xiong H P, et al. A multicomponent TiZr-based amorphous brazing filler metal for high-strength joining of titanium alloy [J]. Scripta Materialia, 2016, 117:55-59.
张秋平,张永寿. 钛合金用钎焊材料的工艺发展现状[J]. 飞航导弹, 2005(7):56-64.
ZHANG Qiuping,ZHANG Yongshou. Development of brazing materials for titanium alloys[J]. Winged Missiles Journal,2005(7):56-64.
LI Wanqiang. Study on high frequency induction brazing of TC6 and TC11 titanium alloy[J]. Electric Welding Machine,2017,47(05):77-81.
Shapiro A, Rabinkin A. State of the art of titanium-based brazing filler metals[J]. Welding Journal, 2003, 82(10): 36-43.
Ren H S, Xiong H P, Chen B, et al. Vacuum brazing of Ti3Al-based alloy to TiAl using TiZrCuNi(Co) fillers[J]. Journal of Materials Processing Technology, 2015, 224: 26-32.
Ren H S, Xiong H P, Pang S J, et al. Microstructures and mechanical properties of transient liquid-phase diffusion-bonded Ti3Al/TiAl joints with TiZrCuNi interlayer[J]. Metallurgical and Materials Transactions A, 2016, 47: 1668-1676.
ZHAN Ertuan,KONG Fantao,XIAO Shulong,et al. Investment casting mold filling capacity of high temperature titanium alloy IMI834[J]. The Chinese Journal of Nonferrous Metals,2010,20: 833-846.