J. Phys. IV France 112 (2003) 669
DOI: 10.1051/jp4:2003971

Orientation dependence of stress-induced martensitic transformation in quenched Ti-50.8at%Ni single crystals

J. Zhang¹, Y. Xu², K. Otsuka², X. Ren³, Yu.I. Chumlyakov⁴ and M. Asai<sup>5

1</sup>  Innova Superconductor Technology Co. Ltd., Beijing 100176, China
²  National Institute for Materials Science (NIMS), Advanced Materials Laboratory, 1-1 Namiki, Tsukuba 305-0044, Japan
³  National Institute for Materials Science, Sengen, Tsukuba 305-0047, Japan
⁴  Siberian Physical-Technical Institute, Tomsk State University, 1 Revolution Sq., 634050 Tomsk, Russia
⁵  Yokohama R&D Laboratory, The Furukawa Electric Co. Ltd., Yokohama 220-0073, Japan

Abstract
The effect of orientation and that of tensile vs. compressive stress on the B2-B19 ' stress-induced martensitic transformation was investigated by using tensile test for solution-treated Ti-50.8at%Ni single crystals, and the result was analyzed by comparing Schmid factors for competing two shears, i.e. for the shape strain of martensitic transformation and for slip. As a result, complete superelasticity was found for <001 > compression even in a solution-treated single crystal, although complete superealsticity was not found for tension.

© EDP Sciences 2003