New beta-type Ti-Fe-Sn-Nb alloys with superior mechanical strength

Ti-Fe-Sn-Nb alloys comprised of single β-Ti phase were developed showing excellent mechanical strength and superior plasticity. The alloys exhibited increased yield strength as a function of Fe content, where the Ti80Fe14Sn3Nb3 alloy presented the highest yield stress (1.88GPa) comparable to that of...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2017-09, Vol.705, p.348-351
Main Authors: Zhao, G.-H., Ketov, S.V., Jiang, J., Mao, H., Borgenstam, A., Louzguine-Luzgin, D.V.
Format: Article
Language:English
Subjects:
Alloy development
Alloys
beta-stability
Beta-Ti alloy
Crystal defects
Dislocation density
Ferrous alloys
Mechanical properties
Niobium
Plastic deformation
Shear strength
Strain hardening
Strain rate
Strength
Ti-Fe-Sn-Nb
Tin base alloys
Titanium base alloys
Yield stress
β-stability
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Summary:Ti-Fe-Sn-Nb alloys comprised of single β-Ti phase were developed showing excellent mechanical strength and superior plasticity. The alloys exhibited increased yield strength as a function of Fe content, where the Ti80Fe14Sn3Nb3 alloy presented the highest yield stress (1.88GPa) comparable to that of Ti-based nanocrystalline alloys. Moreover, a significant strain-hardening (520MPa) was achieved along with the plastic deformation. The excellent mechanical strength was enhanced by the supersaturated β-Ti and the high density of lattice defects that restrict the dislocation motion.
ISSN:0921-5093
1873-4936
1873-4936
DOI:10.1016/j.msea.2017.08.060