Abstract
The superelasticity and deformation behaviors of β-type TiNb24Zr2 subjected to aging treatment were investigated in this study. As the aging time increased, the precipitation of isothermal ω phase was found to restrain the formations of twinning and stress-induced α″ martensite. The superelastic recovery of the sample first improves and then deteriorates with extended aging times. A maximum and stable superelastic recovery of 4.3 pct is obtained for an aging time of 7.2 ks.
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Acknowledgments
This work was financially supported, in part, by the Industrial Technology Research Grant Program in 2009 from the New Energy and Industrial Technology Development Organization (NEDO) and the Global COE Program “Materials Integration International Center of Education and Research, Tohoku University,” Ministry of Education, Culture, Sports, Science and Technology (MEXT).
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Manuscript submitted September 21, 2010.
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Li, Q., Niinomi, M., Nakai, M. et al. Improvements in the Superelasticity and Change in Deformation Mode of β-Type TiNb24Zr2 Alloys Caused by Aging Treatments. Metall Mater Trans A 42, 2843–2849 (2011). https://doi.org/10.1007/s11661-011-0713-0
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DOI: https://doi.org/10.1007/s11661-011-0713-0