Achieving synergy of mechanical isotropy and tensile properties by constructing equiaxed microstructure in as-printed Ti alloys

Wang, S.X.; Li, S.F.; Gan, Xianglai; Zheng, Ruixi; Ye, D.; Misra, R.D.K.; Kondoh, Katsuyoshi; Yang, Yan

doi:10.1016/j.scriptamat.2023.115379

Cited by 6 publications

(1 citation statement)

References 41 publications

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“…Under this circumstance, a superior tensile strength (1 225 MPa) and proper elongation (5.4%) can be achieved [76]. Furthermore, adding B into LAM Ti-Ni alloy can further provide extra-constitutional supercooling, thereby further refining the prior-β grains and enhancing the mechanical performance [79,88]. In addition, Ni addition has also been used to modify the LDED Ti-6Al-4V alloy [77,78].…”

Section: Customized (α + β)-Ti Alloys For Lammentioning

confidence: 99%

Recent innovations in laser additive manufacturing of titanium alloys

Su,

Jiang,

Teng

et al. 2024

Int. J. Extrem. Manuf.

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Titanium (Ti) alloys are widely used in frontier fields like aerospace and biomedical engineering. Laser additive manufacturing (LAM), as an innovative technology, is the key driver for the development of Ti alloys. Despite the significant advancements in LAM of Ti alloys, there remain challenges that need further research and development efforts. To recap the potential of LAM high-performance Ti alloy, this article systematically reviews LAM Ti alloys with up-to-date information on process, materials, and properties. Several feasible solutions to advance LAM Ti alloys were reviewed, including intelligent process parameters optimization, LAM process innovation with auxiliary fields and novel Ti alloys customization for LAM. The auxiliary energy fields (e.g., thermal, acoustic, mechanical deformation and magnetic fields) that can be applied during LAM Ti alloys affect the melt pool dynamics and solidification behaviour, altering microstructures and mechanical performances. Different kinds of novel Ti alloys customized for LAM, like peritectic α-Ti, eutectoid (α+β)-Ti, hybrid (α+β)-Ti, isomorphous β-Ti and eutectic β-Ti alloys are reviewed in detail. Furthermore, machine learning in accelerating the LAM process optimization and new materials development is also outlooked. The review summarizes the material properties and performance envelops and benchmarks the research achievements in LAM of Ti alloys. In addition, the perspectives and further trends in LAM of Ti alloys are also highlighted.

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Section: Customized (α + β)-Ti Alloys For Lammentioning

confidence: 99%

Recent innovations in laser additive manufacturing of titanium alloys

Su,

Jiang,

Teng

et al. 2024

Int. J. Extrem. Manuf.

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Effects of Heat Treatment and Processing Conditions on the Microstructure and Mechanical Properties of a Novel Ti–6.3Cu–2.2Fe–2.1Al Alloy

Klein,

Staufer,

Edtmaier

et al. 2024

Adv Eng Mater

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Adding transition alloying elements to achieve a columnar to equiaxed transition (CET) in Ti‐alloys is gaining attention in additive manufacturing (AM). AM which may be categorized as an advanced solidification process, is commonly a near‐net‐shape process. This thus does not allow traditional thermo‐mechanical processing to reduce grain size, which drives research toward novel alloys able to establish a primary grain structure with equiaxed grains upon solidification. The Ti‐Cu alloy system caught attention through inducing the CET, but so far, no focus was placed on its secondary, solid state, phase transformations during the heat treatment. Therefore, requiring modified heat treatment strategies to accommodate for the inability of mechanical preforming prior to heat treating and thus achieving desired mechanical properties. This work provides insights on microstructural evolution and tensile properties of a novel Ti‐6.3Cu‐2.2Fe‐2.1Al alloy gained in an extensive heat treatment study. Results show a lamellar α+β Widmannstätten microstructure with Ti2Cu precipitation and other features including grain boundary α, precipitate‐free zones, and very fine secondary α precipitates. Utilizing micrographs and fractographic imaging, the fracture mode is identified as quasi‐cleavage mode with preferential crack initiation at grain boundary α layers. Tensile tests on heat treated samples show high strengths with simultaneously limited ductility.This article is protected by copyright. All rights reserved.

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Metallurgy and Solidification Microstructure Control of Fusion-Based Additive Manufacturing Fabricated Metallic Alloys: A Review

Li,

Dong

et al. 2024

Acta Metall. Sin. (Engl. Lett.)

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Achieving synergy of mechanical isotropy and tensile properties by constructing equiaxed microstructure in as-printed Ti alloys

Cited by 6 publications

References 41 publications

Recent innovations in laser additive manufacturing of titanium alloys

Recent innovations in laser additive manufacturing of titanium alloys

Effects of Heat Treatment and Processing Conditions on the Microstructure and Mechanical Properties of a Novel Ti–6.3Cu–2.2Fe–2.1Al Alloy

Metallurgy and Solidification Microstructure Control of Fusion-Based Additive Manufacturing Fabricated Metallic Alloys: A Review

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