Evolution of dislocations and deformation twins in Ti6321 titanium alloy under contact explosion

Zhou, Yan; Wang, Lin; Ning, Zixuan; Li, Yanxing; Liu, Anjin; Cheng, Xingwang

doi:10.1016/j.jmrt.2023.03.027

Cited by 9 publications

(1 citation statement)

References 18 publications

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“…Fig.7(e) displays a high-resolution image of the twin displayed in Fig.7(c), and Fig.7(e1) and Fig.7(e2) are the images for the selected 1(matrix) and 2(twin) regions after Fourier transform (FFT), demonstrating that the twin and matrix share the same crystal structure[23]. In Fig.7(f), corresponding to area 3 in Fig.7(e), the twin boundary is depicted, generated through the inverse Fourier transform (IFFT).…”

mentioning

confidence: 98%

Effect of secondary annealing and deep cryogenic treatment on microstructure and mechanical properties of TC27 titanium alloy

Li,

Xiong,

Wang

et al. 2024

Preprint

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This study investigates the effects of annealing and subsequent deep cryogenic treatment (DCT) on the microstructure and mechanical properties of TC27 titanium alloy. The results show that in the annealed alloy, the α(100) crystal plane grows preferentially along with an increased dislocation density. The size of α-phase significantly increases, forming a basketweave structure between the coarse colony laths. For the ADCT (annealed then DCT) sample, the strongest diffraction peak changes from β(110) after 24 hours of low temperature treatment (ADCT24) to α(101) after 36 hours of low temperature treatment (ADCT36). In the optimized ADCT36 sample, there are more needle-like precipitated α' phases, which result from the β phase supersaturated non-equilibrium densely packed hexagonal lattice formed by non-diffusion transformation of α. The tensile strength and elongation of ADCT36 are 1096.7MPa and 5.6%, respectively, and these improvements are attributed to the homogeneous structure, more isometric and finer secondary α phase, grain rotation, and high-density dislocations.

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mentioning

confidence: 98%

Effect of secondary annealing and deep cryogenic treatment on microstructure and mechanical properties of TC27 titanium alloy

Li,

Xiong,

Wang

et al. 2024

Preprint

View full text Add to dashboard Cite

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Stress corrosion behavior and mechanism of Ti6321 alloy in seawater with different dissolved oxygen concentrations

Hao,

Zhang,

et al. 2024

Materials & Corrosion

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The stress corrosion behavior of Ti‐6Al‐3Nb‐2Zr‐1Mo (Ti6321, in wt%) alloy in seawater with different dissolved oxygen (DO) concentrations was investigated using X‐ray photoelectron spectroscopy, energy dispersive spectrometer, electrochemical measurements, and other advanced methodologies. The results indicate that when the DO concentration in seawater is insufficient, the passivation film will preferentially form on the α‐phase surface. Meanwhile, insufficient DO concentration leads to incomplete oxidation of the surface passivation film, resulting in an increase in surface defects. Hydrogen produced by reactions at crack tips is more likely to enter the surface of the titanium alloy through these defects, and under the influence of HEDE and HELP mechanisms, promote crack propagation.

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Material removal mechanisms in ultra-high-speed scratching of Ti6Al4V alloy by selective laser melting

Jiang,

Li,

Liu

et al. 2024

Journal of Manufacturing Processes

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Evolution of dislocations and deformation twins in Ti6321 titanium alloy under contact explosion

Cited by 9 publications

References 18 publications

Effect of secondary annealing and deep cryogenic treatment on microstructure and mechanical properties of TC27 titanium alloy

Effect of secondary annealing and deep cryogenic treatment on microstructure and mechanical properties of TC27 titanium alloy

Stress corrosion behavior and mechanism of Ti6321 alloy in seawater with different dissolved oxygen concentrations

Material removal mechanisms in ultra-high-speed scratching of Ti6Al4V alloy by selective laser melting

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