Interface characteristics in diffusion bonding of a γ-TiAl alloy to Ti–6Al–4V

Wang, Xiufeng; Ma, Minglong; Liu, Xue Bin; Lin, Jixing

doi:10.1007/s10853-006-0189-2

Cited by 13 publications

(7 citation statements)

References 13 publications

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“…As reported in the authors' previous literature, 8 the microstructure of the annealed Ti-6Al-4V alloy consisted of two phases, i.e. the equiaxed primary a phase with a size of 20-30 mm and the transformed b at the grain boundaries.…”

Section: Resultssupporting

confidence: 64%

“…The formation of the microstructure has been discussed in details elsewhere. 8 Nevertheless, it is easy to find in Fig. 2b that there are many fine grains in the interface of SPF/BD of alloys with LST.…”

Section: Resultsmentioning

confidence: 90%

“…The existing literature has demonstrated the possibility to join both c-Ti-Al alloys and Ti alloys either to themselves or to other special materials by diffusion bonding. [3][4][5][6][7][8] However, how to improve the DB parameters (bonding time and temperature, etc.) and cut the cost is still a crucial problem.…”

Section: Introductionmentioning

confidence: 99%

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Probing into diffusion bonding of laser surface treated γ-Ti–Al alloy/Ti–6Al–4V alloy

Wang¹,

Luo²,

Liu³

et al. 2008

Science and Technology of Welding and Joining

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In this work, a novel diffusion bonding technique combining the laser surface treatment (LST) with the diffusion bonding is used to join a c-Ti-Al alloy with a Ti-6Al-4V alloy. By using the LST and subsequent heat treatment, a layer with a fine grain structure can be obtained on their surface of the two alloys. The diffusion bonding behaviour between c-Ti-Al alloy and Ti-6Al-4V alloy with or without LST under the different bonding conditions is investigated. The result reveals that LST can improve the diffusion bonding behaviour of the two alloys, and the three point bending strength of the joints can be promoted. The sound bonding between the two alloys with the LST is achieved at 1173 K under 80 MPa in 2 h.

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Section: Resultssupporting

confidence: 64%

Section: Resultsmentioning

confidence: 90%

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Probing into diffusion bonding of laser surface treated γ-Ti–Al alloy/Ti–6Al–4V alloy

Wang¹,

Luo²,

Liu³

et al. 2008

Science and Technology of Welding and Joining

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“…The diffusion bonding between titanium aluminides and Ti alloys was systematically investigated in the existing literature [ 67 , 69 , 85 , 87 , 88 ]. According to elemental gradient diffusion at the interface, the preferred reaction phase betwen TiAl intermetallics to TC4 alloys is α 2 -Ti 3 Al phase.…”

Section: Diffusion Bonding Of Titanium Aluminidesmentioning

confidence: 99%

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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“…It was found that there is an atom diffusion layer with a width of 2 µm in the bond, in which the micro hardness is higher than that in base alloy. Wang et al [7] found that the bonding interface of the γ-TiAl alloy and Ti-6Al-4V alloy is composed of two zones and its width increases with the increase in bonding temperature. The microhardness increases monotonously from the side near the γ-TiAl alloy to the side near the Ti-6Al-4V alloy.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Microstructure Characteristics and Mechanical Properties of a Press Bonded Ti–5Al–2Sn–2Zr–4Mo–4Cr Alloy

2021

Crystals

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The microstructure evolution characteristics and the shear strength of bond and base alloys were investigated during the press bonding of the Ti–5Al–2Sn–2Zr–4Mo–4Cr alloy. The quantitative detection of the interfacial void shows that the interfacial voids shrunk gradually with time and a bond free of voids could be obtained at the time above 10 min. The microstructure of the base alloy shows that the primary α phase tends to be equiaxed because of the increase in plastic deformation and the variation in the volume fraction and grain size of the primary α phase that are complicated with time. The grain boundary misorientation characteristics in bond and base alloys are not consistent. However, they tend to be comparable over time. The shear strength of bond and base alloys at different times was explained and compared. The compared results indicate that the enhanced strength of the bond is mainly due to the increase in the bonded area. However, the strength of the bond decreases slightly because of the slight coarsening of the grain size and the decrease in the volume fraction of the primary α phase at the time more than 20 min. The shear strength of the bond and base alloys tends to be highest and close at 10 min.

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Interface characteristics in diffusion bonding of a γ-TiAl alloy to Ti–6Al–4V

Cited by 13 publications

References 13 publications

Probing into diffusion bonding of laser surface treated γ-Ti–Al alloy/Ti–6Al–4V alloy

Probing into diffusion bonding of laser surface treated γ-Ti–Al alloy/Ti–6Al–4V alloy

Welding and Joining of Titanium Aluminides

Interfacial Microstructure Characteristics and Mechanical Properties of a Press Bonded Ti–5Al–2Sn–2Zr–4Mo–4Cr Alloy

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