TY - JOUR

T1 - Martensite stabilization effect after high strain rate loading

AU - Ostropiko, E.S.

AU - Konstantinov, A.Yu.

N1 - Export Date: 4 November 2024 Сведения о финансировании: Saint Petersburg State University, SPbU Сведения о финансировании: Russian Science Foundation, RSF, 22-79-00068 Текст о финансировании 1: Research was performed using the Centre for Thermogravimetric and Calorimetric Research of the Research Park of St Petersburg State University. The work was supported by Russian Science Foundation (project no. 22-79-00068). Текст о финансировании 2: Acknowledgements. Research was performed using the Centre for Thermogravimetric and Calorimetric Research of the Research Park of St Petersburg State University. The work was supported by Russian Science Foundation (project no. 22-79-00068).

PY - 2024/6/1

Y1 - 2024/6/1

N2 - The behavior of shape memory alloys depends on the deformation technique and strain rate. This paper aims to demonstrate the martensite stabilization effect in equiatomic NiTi shape memory alloy after high strain rate loading. The high strain rate deformation at different rates and temperatures was performed using the Kolsky method modified for tension. Quasistatic deformation tests were conducted on a universal testing machine at identical temperatures up to the same residual strains. After tests, the samples were heated through reverse martensitic transformation temperature range in a thermomechanical analyzer with a temperature measurement accuracy of 0.3 °C. It is shown that the martensite stabilization effect depends on the loading rate in martensitic, premartensitic, and mixed phase states. An increase in the loading rate in the martensitic state results in a greater stabilization effect. High strain rate loading in the premartensitic and mixed-phase states does not lead to martensite stabilization, unlike in the quasi-static case. The results are consistent with the those of other authors and can be explained by hypotheses referenced in the paper. © E.S. Ostropiko, A.Yu. Konstantinov, 2024.

AB - The behavior of shape memory alloys depends on the deformation technique and strain rate. This paper aims to demonstrate the martensite stabilization effect in equiatomic NiTi shape memory alloy after high strain rate loading. The high strain rate deformation at different rates and temperatures was performed using the Kolsky method modified for tension. Quasistatic deformation tests were conducted on a universal testing machine at identical temperatures up to the same residual strains. After tests, the samples were heated through reverse martensitic transformation temperature range in a thermomechanical analyzer with a temperature measurement accuracy of 0.3 °C. It is shown that the martensite stabilization effect depends on the loading rate in martensitic, premartensitic, and mixed phase states. An increase in the loading rate in the martensitic state results in a greater stabilization effect. High strain rate loading in the premartensitic and mixed-phase states does not lead to martensite stabilization, unlike in the quasi-static case. The results are consistent with the those of other authors and can be explained by hypotheses referenced in the paper. © E.S. Ostropiko, A.Yu. Konstantinov, 2024.

KW - high-strain rate loading

KW - martensite stabilization effect

KW - nickel titanium

KW - shape memory alloys

KW - Nickel alloys

KW - Shape-memory alloy

KW - Tensile testing

KW - Titanium alloys

KW - Velocity measurement

KW - High-strain rate loading

KW - High-strain-rate

KW - Loading rate

KW - Martensite stabilization

KW - Martensite stabilization effect

KW - Memory alloy

KW - Mixed phase

KW - Nickel-Titanium

KW - Shape-memory

KW - Stabilization effects

KW - Temperature measurement

UR - https://www.mendeley.com/catalogue/3c1c5549-3c33-3cdb-be90-667615f96962/

U2 - 10.18149/MPM.5222024_5

DO - 10.18149/MPM.5222024_5

M3 - статья

VL - 52

SP - 49

EP - 55

JO - ФИЗИКА И МЕХАНИКА МАТЕРИАЛОВ

JF - ФИЗИКА И МЕХАНИКА МАТЕРИАЛОВ

SN - 1605-8119

IS - 2

ER -