Interface microstructure evolution and bonding strength of TC11/γ-TiAl bi-materials fabricated by laser powder deposition

Xu, Zhijun; Zhang, Yongzhong; Liu, Mingkun; Gong, Xinyong

doi:10.1007/s12598-014-0243-1

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…For example, Qu et al [12] successfully prepared a Ti-47Al-2.5V-Cr/Ti-6Al-2Zr-Mo-V BS material without metallurgical defects by a LAM technique. Zhang [13] and Xu [14] also successfully prepared Ti 2 AlNb/TC11 and γ -TiAl/TC11 BSs using the LAM method and analysed the microstructure and tensile properties at room temperature. However, the direct connection of TC4/TiAl BS is rarely reported in detail using the LAM technique.…”

Section: Introductionmentioning

confidence: 99%

Direct bonding of bimetallic structure from Ti6Al4V to Ti48Al2Cr2Nb alloy by laser additive manufacturing

Liu

Zhu

Yin

et al. 2022

Materials Science and Technology

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A TC4/TiAl bimetallic structure (BS) was successfully fabricated by laser additive manufacturing (LAM) to investigate the microstructure evolution of the transition zone. The results presented that the microstructures of the transition zone consisted of α (α-Ti), α2 (Ti3Al) and γ (TiAl). The evolution rule of the microstructures was (more α + less α2) → (more α2 + less γ) → (more γ + less α2) from the TC4 alloy side to the TiAl alloy side in the transition zone. The mechanical properties of the LAMed BS specimens revealed that the tensile strength reached that of the as-deposited TiAl alloy. The fracture was located at the TiAl alloy side near the transition zone and the fracture surfaces showed a quasi-cleavage fracture morphology.

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Section: Introductionmentioning

confidence: 99%

Direct bonding of bimetallic structure from Ti6Al4V to Ti48Al2Cr2Nb alloy by laser additive manufacturing

Liu

Zhu

Yin

et al. 2022

Materials Science and Technology

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“…The chemical composition can be changed accordingly over a large length scale by varying the pre-alloyed mixed powders during the laser deposition process, and the microstructure and properties can be controlled to obtain the gradient properties in different positions of the components. Xu et al [5] prepared TC11/γ-TiAl bi-materials without cracks by laser powder deposition, and found that the fracture position was located at the TiAl side rather than interfaces, and the composition and microstructure change discontinuously at the interface. Wu et al [6] prepared γ-TiAl/Ti2AlNb dual alloy without cracks by direct metal deposition, and discovered that a transition zone with gradual change of compositions and microstructures was generated between γ-TiAl and Ti2AlNb alloy and an obvious boundary was observed between layers of the transition zone.…”

Section: Introductionmentioning

confidence: 99%

The preparation of gradient titanium alloy through laser deposition

Liu

Zhao

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Functionally gradient materials (FGMs) with continuous variation in composition or microstructure can realize gradient properties in different positions of the same component. The layer-by-layer laser deposition additive manufacturing is one of the most promising technologies that prepare FGMs with gradient properties. The present study is focused on the preparation of gradient titanium alloy by laser depositing Ti2AlNb powders on the substrate of a near-α high temperature titanium alloy. The microstructure, composition, and micro-hardness of prepared gradient titanium alloy with and without transition layer were compared and analyzed. Results show that an obvious bonding interface with variant microstructure morphology and element contents formed during directly deposited Ti2AlNb powders on near-α titanium alloy substrate and the bonding interface exhibits higher micro-hardness than the substrate and the deposited zone. However, the microstructure and the element exhibit gradient distribution characteristics along the deposition direction after adding the mixed powders of both two alloys as intermediate transition layers between the near-α titanium alloy and the Ti2AlNb alloy. The gradient distributed micro-hardness from the substrate to the top deposited zone sufficiently demonstrates the feasibility of obtaining gradient properties of gradient titanium alloy with composition transition layer during laser depositing.

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Microstructure, mechanical and corrosion properties of electron-beam-melted and plasma-transferred arc-welded WCP/NiBSi metal matrix composites

et al. 2018

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Interface microstructure evolution and bonding strength of TC11/γ-TiAl bi-materials fabricated by laser powder deposition

Cited by 10 publications

References 24 publications

Direct bonding of bimetallic structure from Ti6Al4V to Ti48Al2Cr2Nb alloy by laser additive manufacturing

Direct bonding of bimetallic structure from Ti6Al4V to Ti48Al2Cr2Nb alloy by laser additive manufacturing

The preparation of gradient titanium alloy through laser deposition

Microstructure, mechanical and corrosion properties of electron-beam-melted and plasma-transferred arc-welded WCP/NiBSi metal matrix composites

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