Abstract：
:In this study, we explored the Ti-Nb-Fe system to find an optimal cost-effective composition with the lowest elastic modulus and the lowest added Nb content. Six Ti-(31-4x)Nb-(1+0.5x)Fe ingots were prepared and Nb was substituted with Fe, starting at Ti-31Nb-1.0Fe and going up to Ti-11Nb-3.5Fe (wt%). The ingots were subjected to cold rolling, recrystallization and solution treatment, followed by water-quenching (WQ), furnace cooling (FC) or step-quenching to 350°C, which caused massive formation of isothermal ω phase. All the water-quenched alloys displayed athermal ω phase, which is apparently the result of fully collapsed β phase. The Fe content improved the compressive strength of the alloys. In the FC alloys, substitution with Fe favored the formation of α phase instead of ω phase, giving rise to a solute-rich β phase with a lattice parameter of 0.3249nm. Among the FC alloys, the lowest modulus of 83±4GPa was obtained in the Ti-19Nb-2.5Fe alloy, which exhibited fine and well dispersed α precipitation and absence of ω phase. DSC experiments indicated that the experimental alloys showed varying phase stability during heating.
journal_name
J Mech Behav Biomed Materauthors
Salvador CAF,Dal Bó MR,Costa FH,Taipina MO,Lopes ESN,Caram Rdoi
10.1016/j.jmbbm.2016.09.024subject
Has Abstractpub_date
2017-01-01 00:00:00pages
761-769eissn
1751-6161issn
1878-0180pii
S1751-6161(16)30331-9journal_volume
65pub_type
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journal_title：Journal of the mechanical behavior of biomedical materials
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journal_title：Journal of the mechanical behavior of biomedical materials
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journal_title：Journal of the mechanical behavior of biomedical materials
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journal_title：Journal of the mechanical behavior of biomedical materials
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journal_title：Journal of the mechanical behavior of biomedical materials
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journal_title：Journal of the mechanical behavior of biomedical materials
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journal_title：Journal of the mechanical behavior of biomedical materials
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journal_title：Journal of the mechanical behavior of biomedical materials
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