Mechanisms of secondary phases formation and resultant mechanical properties of a beta-type Ti-13.3Mo-7.2Al–4Zr-0.25Ni alloy fabricated by laser aided additive manufacturing

Sui, Shang; Bi, Guijun; Chen, Lijia; Cao, Licao; Xu, Chunjie; Guo, Chao; Wu, Xiaoqing; Zhang, Zhongming

doi:10.1016/j.msea.2022.144236

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…Similarly, Ti-Mo alloys are typical isomorphous Ti alloys with high corrosion resistance, superior biocompatibility and low modulus [117,118]. Vrancken et al [119] prepared the Ti-6Al-4V/10Mo alloy by in-situ alloying LPBF, and numerous unmelted Mo particles were present in the alloy.…”

Section: Isomorphous β-Ti Alloysmentioning

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: Isomorphous β-Ti Alloysmentioning

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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“…Laser directed energy deposition (L-DED) is an integrated forming manufacturing technology with high efficiency and high precision [16][17][18], which provides a novel manufacturing approach for Ti alloy components with complex configuration. In recent years, the correlation studies focused on the applications of L-DED technique in high strength and high toughness Ti alloys have been widely carried out, such as Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy [19], Ti-5Al-5Mo-5V-3Cr alloy [20], Ti-13.3Mo-7.2Al-4Zr-0.25Ni alloy [21], Ti-6Al-2Sn-4Zr-2Mo alloy [22], Ti-5Al-5Mo-5V-1Cr-1Fe alloy [23], Ti-5Al-5Mo-5V-3Cr-1Zr alloy [24,25], and Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy [26]. For high strength and high toughness Ti alloys, the preparation method is the key link to determine the mechanical properties, but the L-DED preparation process involves a complex nonequilibrium physical and unconventional metallurgical nature, which is still full of uncertainties.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of a newly developed Ti-6Al-2Mo-2Sn-2Zr-2Cr-2V alloy fabricated by laser directed energy deposition

Wang,

Yi,

Yang

et al. 2024

Mater. Res. Express

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With the rapid development of aviation industry, the study of novel titanium (Ti) alloy with superior mechanical properties is of great significance. In this paper, a newly developed Ti-6Al-2Mo-2Sn-2Zr-2Cr-2V alloy was fabricated by laser directed energy deposition (L-DED), which exhibits coarse β columnar grains containing the basket-weave structure knitted with α phases and β phases. After solution and aging heat-treatment, the fine secondary α phase precipitates, which leads to the increase in microhardness. The as-deposited sample exhibits the tensile strength of 1025 MPa and the elongation of 6.0%. With solution temperature increasing, the strength increases but the plasticity first increases and then decreases. The fracture mechanism shows a mixed of ductile and brittle fracture. The average impact toughness of as-deposited sample in building direction is 40.9 J/cm2 higher than that (23.4 J/cm2) in direction perpendicular to building direction. After solution and aging heat-treatment, the impact toughness improves significantly.

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