Rolling Texture of α"-Phase in Ti-22mol%Nb-3mol%Al Biomedical Shape Memory Alloy

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Rolling texture of α"(C-orthorhombic) martensite phase in Ti-22mol%Nb-3mol%Al β-titanium based shape memory alloy was examined using X-ray pole figure measurement. The alloy was dual phase of α'' and β(bcc) at room temperature (RT) and was cold-rolled with reduction rates of 40%~99% at RT. Stress-induced martensitic transformation occurred during the rolling and then the material was fully transformed into martensite phase. Subscript α" and β indicate martensite and parent phase hereafter. The major texture was close to {411}α"<173>α" when the reduction rate was lower than 60%. This texture is a result of a preferential formation of specific variants which have a higher interaction with the macroscopic deformation. As the reduction rate was increased, ND moved toward {101}α" whereas RD was around <010>α" regardless of the reduction rate. {101}α"<010>α" texture was confirmed when the reduction rate was 99%.

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Periodical:

Materials Science Forum (Volumes 561-565)

Main Theme:

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

1517-1520

Citation:

T. Inamura et al., "Rolling Texture of α"-Phase in Ti-22mol%Nb-3mol%Al Biomedical Shape Memory Alloy", Materials Science Forum, Vols. 561-565, pp. 1517-1520, 2007

Online since:

October 2007

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$38.00

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DOI: https://doi.org/10.1016/j.actamat.2005.09.014

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