Vacuum brazing of TiAl alloy to 40Cr steel with Ti60Ni22Cu10Zr8 alloy foil as filler metal

Dong, Honggang; Yang, Zhonglin; Yang, Guoshun; Chen, Dong

doi:10.1016/j.msea.2012.11.014

Cited by 44 publications

(13 citation statements)

References 17 publications

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“…Brazing, which is usually defined as a joining method with a molten filler metal and the solid substrates, can offer many advantages over other fusion welding methods such as a relatively low brazing temperature, the possibility of dissimilar materials and complex structures joining, high precision and better joint properties. In recent years, a number of investigations on brazing titanium aluminides have been reported which involve both conventional furnace brazing [ 29 , 30 , 31 ] and infrared brazing [ 14 , 15 , 17 , 32 ]. In general, titanium aluminides are suitable for brazing because most conventional filler metals can wet them well.…”

Section: Brazing Of Titanium Aluminidesmentioning

confidence: 99%

“…The compositions of the Ti-based filler metal and the corresponding physical parameters are listed in Table 1 . It is noted that most of filler metals contain Ni element, which is beneficial for improving the ductility of the brazing seam [ 22 , 29 , 30 , 42 ]. The addition of Cu element causes a significant decrease in the melting point and improves the flow ability of the Ti-based filler metal [ 17 , 32 , 34 , 43 ].…”

Section: Brazing Of Titanium Aluminidesmentioning

confidence: 99%

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Welding and Joining of Titanium Aluminides

Cao

Song

et al. 2014

Materials

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Welding and joining of titanium aluminides is the key to making them more attractive in industrial fields. The purpose of this review is to provide a comprehensive overview of recent progress in welding and joining of titanium aluminides, as well as to introduce current research and application. The possible methods available for titanium aluminides involve brazing, diffusion bonding, fusion welding, friction welding and reactive joining. Of the numerous methods, solid-state diffusion bonding and vacuum brazing have been most heavily investigated for producing reliable joints. The current state of understanding and development of every welding and joining method for titanium aluminides is addressed respectively. The focus is on the fundamental understanding of microstructure characteristics and processing–microstructure–property relationships in the welding and joining of titanium aluminides to themselves and to other materials.

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Section: Brazing Of Titanium Aluminidesmentioning

confidence: 99%

Section: Brazing Of Titanium Aluminidesmentioning

confidence: 99%

Welding and Joining of Titanium Aluminides

Cao

Song

et al. 2014

Materials

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“…The development of joining technologies has become an essential requirement for application of these alloys in replacing traditional metallic alloys in aerospace and automotive applications [3][4][5][6]. However, there are only a few reports regarding the techniques used to join TiAl alloys with other materials [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Joining of TiAl to Steel by Diffusion Bonding with Ni/Ti Reactive Multilayers

Simões

Ramos

Viana

et al. 2016

Metals

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Dissimilar diffusion bonds of TiAl alloy to AISI 310 stainless steel using Ni/Ti reactive multilayers were studied in this investigation. The Ni and Ti alternating layers were deposited by d.c. magnetron sputtering onto the base materials, with a bilayer thickness of 30 and 60 nm. Joining experiments were performed at 700 and 800˝C for 60 min under pressures of 50 and 10 MPa. The effectiveness of using Ni/Ti multilayers to improve the bonding process was assessed by microstructural characterization of the interface and by mechanical tests. Diffusion bonded joints were characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM) and selected area electron diffraction (SAED), high resolution TEM (HRTEM) and Fast Fourier transform (FFT). The bonding interfaces are thin (approximately 5 µm thick) with a layered microstructure. For all joints, the interface is mainly composed of equiaxed grains of NiTi and NiTi 2 . The thickness and number of layers depends on the joining conditions and bilayer thickness of the multilayers. Mechanical characterization of the joints was performed by nanoindentation and shear tests. Young´s modulus distribution maps highlight the phase differences across the joint´s interface. The highest shear strength value is obtained for the joint produced at 800˝C for 60 min under a pressure of 10 MPa using Ni/Ti multilayers with 30 nm of bilayer thickness.

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“…Some welding methods have been reported for joining TiAl alloy to steel, such as diffusion bonding and brazing [5,6]. However, the quality of the joint between TiAl alloy and steels are usually poor when using fusion welding because of solidfication cracks and high internal stress.…”

Section: Introductionmentioning

confidence: 99%

Friction Welding of High-Nb Tial Alloy and 40cr Steel Rods

Wang¹,

Liang²,

Lu³

2018

Topics in Chemical &Amp; Material Engineering

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High-Nb TiAl alloy and 40Cr steel rods were welded together using friction welding method. The microstructure and microhardness distribution of the interface of the welded joint were investigated. The tensile strengths of the welded joints in as-welded and in annealing state were determined. The results indicated that the friction welding is an effective method for achieving the solid joint between high-Nb TiAl alloy and 40Cr steel. The tensile strength of as-welded joint reached about 150MPa, and fracture occurred at the interface. However, after annealing at 500°C for 10h, the tensile strength of the joint reached about 400MPa, and fracture occurred on the high-Nb TiAl alloy side. The microhardness at the welded interface was much higher than those of the 40Cr steel and high-Nb TiAl alloy in as-welded state.

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Vacuum brazing of TiAl alloy to 40Cr steel with Ti60Ni22Cu10Zr8 alloy foil as filler metal

Cited by 44 publications

References 17 publications

Welding and Joining of Titanium Aluminides

Welding and Joining of Titanium Aluminides

Joining of TiAl to Steel by Diffusion Bonding with Ni/Ti Reactive Multilayers

Friction Welding of High-Nb Tial Alloy and 40cr Steel Rods

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