Tensile Strain of Alloys with the Martensitic Transformation under the External Impact
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The tensile strain of Ti50 – хNi50 + х shape-memory alloys in the austenitic and martensitic states is considered during the alternating action of a pulsed electric current and ultrasound at room temperature and 200°С. The changes in stress are analyzed at different combinations of ultrasound and/or current, the direction and volume of which depend on the phase state of the material and the degree of strain. The difference between the directions of the changes in stress in shape-memory alloys is associated with the position of the temperature of deformation relative to that of the formation of martensite.
This work was supported by the Russian Foundation for Basic Research, project no. 16-58-48001-IND_omi; and by the Belarus’ Foundation for Basic Research, grant no. T16R-152.
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