Effect of twin-wire feeding methods on the in-situ synthesis of electron beam fabricated Ti-Al-Nb intermetallics

Li, Zixiang; Chang, Baohua; Cui, Yinan; Zhang, Haoyu; Liang, Zhiyue; Liu, Changmeng; Wang, Li; Du, Dong; Chang, Shuhe

doi:10.1016/j.matdes.2022.110509

Cited by 13 publications

(5 citation statements)

References 24 publications

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“…However, the strength properties correspond to that of as-built samples ( Table 6 ). A similar tendency in mechanical properties of O-phase based alloys is also observed in other studies [ 64 , 93 ] ( Table 6 ), which reveals that, at the moment, there are no heat treatment routes available that provide a strength-ductility combination higher than in an as-built state.…”

Section: The Influence Of Mam Process Parameters On Structure Phase C...supporting

confidence: 87%

“…Numerous results on tensile mechanical properties at room temperature have been obtained [ 10 , 11 , 12 , 14 , 20 , 51 , 52 , 54 , 56 , 59 , 62 , 64 , 65 , 66 , 67 , 70 , 93 ] and less research is devoted to elevated temperatures of 650 °C [ 13 , 20 , 62 , 64 , 66 ] and 750 °C [ 59 ]. A wide range of values characterizes the strength and ductility of MAM O-phase alloys—from ultimate tensile strength (UTS) and elongation (EL) of 220 MPa and 0% after L-PBF [ 12 ] to 1258 MPa after heat treatment [ 13 ] and 25.7% after DED accompanied by point forging [ 54 ].…”

Section: The Influence Of Mam Process Parameters On Structure Phase C...mentioning

confidence: 99%

“…The best combination of mechanical properties (UTS = 879 ± 107 MPa [ 14 ], EL = 19.3% [ 93 ]) of O-phase alloys manufactured by the WAAM method are lower than for L-PBF samples (UTS = 1090 ± 9.27 MPa, EL = 22 ± 0.48% [ 11 ]), UTS = 1144 MPa, EL = 24.25% [ 70 ], PF-LD (UTS = 1169 ± 10 MPa, EL = 25.7 ± 0.6% [ 54 ]. The main reason for the lower properties of WAAM alloys is the coarser-grained structure with the average B2/β-grain size exceeding 300 µm [ 14 , 67 ].…”

Section: The Influence Of Mam Process Parameters On Structure Phase C...mentioning

confidence: 99%

“…The average grain after L-PBF and DED-PF size did not exceed 40 μm [ 11 , 70 ] and 55 μm [ 54 ], respectively. Point forging provides the highest combination of properties with a relatively small dispersion [ 93 ], apparently due to the formation of a more uniform melt pool during manufacturing.…”

Section: The Influence Of Mam Process Parameters On Structure Phase C...mentioning

confidence: 99%

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A Review—Additive Manufacturing of Intermetallic Alloys Based on Orthorhombic Titanium Aluminide Ti2AlNb

et al. 2023

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Titanium alloys based on orthorhombic titanium aluminide Ti2AlNb are promising refractory materials for aircraft engine parts in the operating temperature range from 600–700 °C. Parts made of Ti2AlNb-based alloys by traditional technologies, such as casting and metal forming, have not yet found wide application due to the sensitivity of processability and mechanical properties in chemical composition and microstructure compared with commercial solid-solution-based titanium alloys. In the last three decades, metal additive manufacturing (MAM) has attracted the attention of scientists and engineers for the production of intermetallic alloys based on Ti2AlNb. This review summarizes the recent achievements in the production of O-phase-based Ti alloys using MAM, including the analysis of the feedstock materials, technological processes, machines, microstructure, phase composition and mechanical properties. Powder bed fusion (PBF) and direct energy deposition (DED) are the most widely employed MAM processes to produce O-phase alloys. MAM provides fully dense, fine-grained material with a superior combination of mechanical properties at room temperature. Further research on MAM for the production of critical parts made of Ti2AlNb-based alloys can be focused on a detailed study of the influence of post-processing and chemical composition on the formation of the structure and mechanical properties, including cyclic loading, fracture toughness, and creep resistance.

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Section: The Influence Of Mam Process Parameters On Structure Phase C...supporting

confidence: 87%

Section: The Influence Of Mam Process Parameters On Structure Phase C...mentioning

confidence: 99%

Section: The Influence Of Mam Process Parameters On Structure Phase C...mentioning

confidence: 99%

Section: The Influence Of Mam Process Parameters On Structure Phase C...mentioning

confidence: 99%

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A Review—Additive Manufacturing of Intermetallic Alloys Based on Orthorhombic Titanium Aluminide Ti2AlNb

et al. 2023

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“…This method is of great interest to the scientific community because it allows the production of a wide variety of materials based on standard metal wires by using two wire feeders with controlled filament feed into the melt bath. As a result, both the formation of composite materials with a non-standard combination of structure and properties and the production of parts with a directional structure in various areas are possible [44,45].…”

Section: Introductionmentioning

confidence: 99%

Al–Al3Ni In Situ Composite Formation by Wire-Feed Electron-Beam Additive Manufacturing

et al. 2023

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The regularities of microstructure formation in samples of multiphase composites obtained by additive electron beam manufacturing on the basis of aluminum alloy ER4043 and nickel superalloy Udimet-500 have been studied. The results of the structure study show that a multicomponent structure is formed in the samples with the presence of Cr23C6 carbides, solid solutions based on aluminum -Al or silicon -Si, eutectics along the boundaries of dendrites, intermetallic phases Al3Ni, AlNi3, Al75Co22Ni3, and Al5Co, as well as carbides of complex composition AlCCr, Al8SiC7, of a different morphology. The formation of a number of intermetallic phases present in local areas of the samples was also distinguished. A large amount of solid phases leads to the formation of a material with high hardness and low ductility. The fracture of composite specimens under tension and compression is brittle, without revealing the stage of plastic flow. Tensile strength values are significantly reduced from the initial 142–164 MPa to 55–123 MPa. In compression, the tensile strength values increase to 490–570 MPa and 905–1200 MPa with the introduction of 5% and 10% nickel superalloy, respectively. An increase in the hardness and compressive strength of the surface layers results in an increase in the wear resistance of the specimens and a decrease in the coefficient of friction.

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Manipulating molten pool in in-situ additive manufacturing of Ti-22Al-25 Nb through alternating dual-electron beams

Cui

Chang

et al. 2022

Additive Manufacturing

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Effect of twin-wire feeding methods on the in-situ synthesis of electron beam fabricated Ti-Al-Nb intermetallics

Cited by 13 publications

References 24 publications

A Review—Additive Manufacturing of Intermetallic Alloys Based on Orthorhombic Titanium Aluminide Ti2AlNb

A Review—Additive Manufacturing of Intermetallic Alloys Based on Orthorhombic Titanium Aluminide Ti2AlNb

Al–Al3Ni In Situ Composite Formation by Wire-Feed Electron-Beam Additive Manufacturing

Manipulating molten pool in in-situ additive manufacturing of Ti-22Al-25 Nb through alternating dual-electron beams

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