Hydrogen-induced phase with martensitic-like characteristics in Ti-Ni shape memory alloys

Akamine, Hiroshi; Kalbekov, Alimzhan; Higashizono, Takumi; Matsuda, Mitsuhiro; Hata, Satoshi; Nishida, Minoru

doi:10.1016/j.jallcom.2023.171470

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2024

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Cited by 3 publications

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Impact of Microstructure on the Mechanical Behavior of Ti–Al–Ni Composite in a Wide Temperature Range (20–800 °C)

Vasyliv,

Kulyk,

Korendiy

et al. 2024

Springer Proceedings in Physics

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Impact of Microstructure on the Mechanical Behavior of Ti–Al–Ni Composite in a Wide Temperature Range (20–800 °C)

Vasyliv,

Kulyk,

Korendiy

et al. 2024

Springer Proceedings in Physics

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Effect of Al content on thermal stability, shape memory effect and mechanical properties of Cu–Al–Fe shape memory alloys

Gao,

Jian,

Jian

2024

J Therm Anal Calorim

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Transformation Behaviors and Microstructure Modifications in Hydrogen-Charged Ti–Ni Shape Memory Alloy

Kalbekov,

Akamine,

Ajito

et al. 2024

Shap. Mem. Superelasticity

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The effect of hydrogen charging duration on the transformation behavior, microstructural evolution, and dynamic microstructural changes associated with thermoelastic martensitic transformation in Ti–Ni shape memory alloy was investigated. Compared with the uncharged specimen, the martensitic transformation start (Ms) and reverse transformation finish (Af) temperatures increased with charging time, whereas the martensitic transformation finish and reverse transformation start temperatures remained almost unchanged. In situ SEM results were consistent with these behaviors. Upon cooling, the transformation progressed from the center to the surface in charged specimens, indicating a higher transformation temperature in the center than the surface. The latent heat of transformation decreased with increasing charging time, quantitatively attributed to an untransformed region consisting of hydrogen-induced martensite and a hydrogen-affected layer. The hydrostatic effect from those layers on the interior B2 phase was proposed as the origin of the increased Ms and Af temperatures.

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Hydrogen-induced phase with martensitic-like characteristics in Ti-Ni shape memory alloys

Cited by 3 publications

References 34 publications

Impact of Microstructure on the Mechanical Behavior of Ti–Al–Ni Composite in a Wide Temperature Range (20–800 °C)

Impact of Microstructure on the Mechanical Behavior of Ti–Al–Ni Composite in a Wide Temperature Range (20–800 °C)

Effect of Al content on thermal stability, shape memory effect and mechanical properties of Cu–Al–Fe shape memory alloys

Transformation Behaviors and Microstructure Modifications in Hydrogen-Charged Ti–Ni Shape Memory Alloy

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