Variants of Texture Formation by Rolling of Ti-Ni Single Crystals with Shape Memory Properties

Abstract:

Single crystals of the alloy Ti-48%Ni-2%Fe, consisting of the phase B2, were rolled at 350°C with deformation degrees up to ~80% in 11 different initial orientations. Texture development in single crystals under rolling was analyzed to determine the active mechanisms of their plastic deformation. There are three stable initial orientations, which remain unchanged during rolling of Ti-Ni single crystals: {011}<011>, {111}<011> and {111}<112>. It was shown, that Ti-Ni single crystals deform by means of combined action of slip in systems {011}<001> and twinning in systems {114}<221> and {118}<441>. Variants of rolling texture formation in single crystals are very diverse and depend on their initial orientations and deformation degrees.

• Periodical: Materials Science Forum (Volumes 702-703)
• Pages: 900-903
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.702-703.900
• Online since: December 2011
• Authors: Margarita Isaenkova, Yuriy Perlovich, Vladimir Fesenko, Tatyana Dementyeva, Vladimir Goltcev
• Keywords: Reorientation, Rolling Texture, Shape Memory Effects (SME), Single Crystal, Slip System, Stable Orientations, Ti-Ni Alloy, Twinning Systems

References

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