NDLI: Superelasticity in β titanium alloys with nitrogen addition

Content Provider	Springer Nature Link
Author	Furuhara, T. Maki, T. Annaka, S.
Copyright Year	2005
Abstract	Deformation behavior at room temperature was examined in near-β titanium alloys, Ti-10V-2Fe-3Al, containing small amounts of N up to 0.2 mass%. After a β solution treatment, thermally induced α″ martensite is formed in the N-free alloy but no martensite is formed in the 0.1 and 0.2% N alloys. In the N-free alloy, stress-induced α″ martensite transformation occurs during deformation at room temperature, and a shape memory effect by heating after deformation is exhibited, as was previously reported. In the N-containing alloys, shape recovery over 90%, which is much larger than that in the N-free alloy, was obtained by unloading after a bending deformation. In the 0.1% N alloy, forward and reverse martensite transformations are observed during tensile deformation by in-situ optical microscopy, confirming the occurrence of superelasticity in this alloy. On the other hand, a large elastic strain over 1% is obtained in the 0.2% alloy by strengthening of β matrix, although the α″ martensite introduced by further deformation does not disappear by unloading.
Starting Page	761
Ending Page	764
Page Count	4
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	14
Issue Number	6
e-ISSN	15441024
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	β titanium alloy martensite nitrogen phase transformation superelasticity Characterization and Evaluation of Materials Materials Science Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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