Brazeability evaluation of Ti-Zr-Cu-Ni-Co-Mo filler for vacuum brazing TiAl-based alloy

Li, Li; Li, Xiaoqiang; Hu, Ke; He, Bin; Man, Hua

doi:10.1016/s1003-6326(19)64985-x

Cited by 13 publications

(2 citation statements)

References 29 publications

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“…The rise in the volume fraction of the phases, such as AlCuTi and Ti 3 Al adjacent to the BM, caused the interface reaction layer to become thicker. Previous studies [26,27] have shown that, compared with that of the (Ti, Zr) 2 (Cu, Ni) phase, the plasticity of the (Ti, Zr)(Cu, Ni) phase is considerably more superior. The joints at 930 • C presented a moderate reaction layer and the highest volume fraction of the (Ti, Zr)(Cu, Ni) phase, as shown in Figure 6c.…”

Section: Effect Of Brazing Temperature On the Mechanical Properties O...mentioning

confidence: 97%

Brazing Temperature Effects on the Microstructure and Mechanical Properties of Ti-45Al-8Nb Joints Using TiZrCuNi Amorphous Interlayer

Wang,

Xu,

et al. 2024

Coatings

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Ti-45Al-8Nb alloy is widely utilized in the lightweight design of the aerospace field because of its excellent properties. In order to make full use of this alloy, it is important to carry out relevant research, such as into the joining process of Ti-45Al-8Nb alloy. In this work, Ti-45Al-8Nb alloys were successfully connected by a TiZrCuNi amorphous interlayer, which was fabricated using the rapid solidification method. Ti-45Al-8Nb joints were composed of two zones. The typical microstructure of a Ti-45Al-8Nb joint was Ti-45Al-8Nb/AlCuTi + Ti3Al/(Ti, Zr)(Cu, Ni) + (Ti, Zr)2(Cu, Ni)/Ti3Al + AlCuTi/Ti-45Al-8Nb. The diffusion of elements between the interlayer and the substrate was enhanced by increasing the brazing temperature, which resulted in an increase in the thickness of the interfacial reaction layer. The maximum shear strength was 171.2 MPa, which was obtained at 930 °C. The typical cleavage fracture was found in all of the Ti-45Al-8Nb joints. The mechanical properties of the joint were compromised at high brazing temperature due to the presence of excessive (Ti, Zr)2(Cu, Ni) phase and coarse Ti3Al phase, both of which are inherently brittle and harmful to the shear strength of the obtained joint.

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Section: Effect Of Brazing Temperature On the Mechanical Properties O...mentioning

confidence: 97%

Brazing Temperature Effects on the Microstructure and Mechanical Properties of Ti-45Al-8Nb Joints Using TiZrCuNi Amorphous Interlayer

Wang,

Xu,

et al. 2024

Coatings

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“…Li et al brazed a TiAl alloy with amorphous and crystalline TiZrCuNiCoMo filler alloys. Compared with crystalline counterparts, the amorphous alloys brought better brazeability on the surface of the Ti-47Al-2Nb-2Cr-0.15B alloy, and higher tensile strengths of the joints [16]. Cao et al used NiCrSiB amorphous filler foils to braze Ti alloy and ZrO2 ceramic.…”

Section: Introductionmentioning

confidence: 99%

Effect of brazing temperature on microstructure and mechanical properties of TiAl/ZrB2 joint brazed with CuTiZrNi filler

Wang

Yang

et al. 2019

Journal of Manufacturing Processes

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The TiAl alloy and ZrB2-SiC ceramic are promising materials used at high temperatures. One route to extend their unique applications under extreme conditions relies on successful brazing them together with proper fillers. In this work, brazing temperature influences on microstructural, mechanical, and fractural properties were systemically studied for brazed joints after brazing the TiAl to the ZrB2-SiC with amorphous CuTiZrNi fillers. An optimized brazing was found at 1183 K for 1200 s, yielding a high shear strength of 187 MPa. The joints were mainly consisted of AlCuTi, Ti2Al, (Ti,Zr)2(Cu,Ni), TiB,TiB2, TiCu Ti5Si3, and TiC phases. Brazing temperature substantially changed joint composites. It is found that lower temperature lead to insufficient reaction and remained filler and higher ones to large stress-induced microcracks. Based on element diffusion, a formation mechanism of brazed joint was also proposed.

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Progress, applications, and perspectives of titanium-based braze filler metal: a review

Li,

Shi,

Zhang

et al. 2023

J Mater Sci

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Brazeability evaluation of Ti-Zr-Cu-Ni-Co-Mo filler for vacuum brazing TiAl-based alloy

Cited by 13 publications

References 29 publications

Brazing Temperature Effects on the Microstructure and Mechanical Properties of Ti-45Al-8Nb Joints Using TiZrCuNi Amorphous Interlayer

Brazing Temperature Effects on the Microstructure and Mechanical Properties of Ti-45Al-8Nb Joints Using TiZrCuNi Amorphous Interlayer

Effect of brazing temperature on microstructure and mechanical properties of TiAl/ZrB2 joint brazed with CuTiZrNi filler

Progress, applications, and perspectives of titanium-based braze filler metal: a review

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