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Cited 3 time in webofscience Cited 8 time in scopus
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Tuning the texture characteristics and superelastic behaviors of Ti-Zr-Nb-Sn shape memory alloys by varying Nb content

Authors
Li, ShuangleiLim, Jin-HwanRehman, Izaz UrLee, Won-TaeKim, Jung GiOh, Jeong SeokLee, TaekyungNam, Tae-Hyun
Issue Date
15-Jun-2022
Publisher
ELSEVIER SCIENCE SA
Keywords
Ti-Zr-Nb-Sn alloy; Shape memory alloys (SMA); Recrystallization texture; Electron backscatter diffraction (EBSD)
Citation
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, v.845
Indexed
SCIE
SCOPUS
Journal Title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume
845
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/1166
DOI
10.1016/j.msea.2022.143243
ISSN
0921-5093
Abstract
In this study, Ti-20Zr-(8-12)Nb-3Sn (at.%) shape memory alloys were fabricated by arc melting method and their phase constitutions, texture characteristics and superelastic behaviors were investigated by X-ray diffraction (XRD), electron back-scattered diffraction (EBSD) and tensile tests. Main alpha" martensite and minor beta were formed in solution-treated Ti-20Zr-8Nb-3Sn specimen. With increasing Nb content to above 10 at.%, only the beta phase was observed. The texture characteristics of these solution-treated Ti-Zr-Nb-Sn alloys were found to be tuned by varying Nb content. A highly dominant {001}beta < 110>beta recrystallization texture was evolved to dominant Goss texture ((110)beta[001]beta) and weak gamma-fiber texture ((111)beta//rolling plane) with increasing Nb content from 9 to 12 at.%. The Goss texture has not previously been reported in Ti-Zr-Nb-Sn alloys. The texture evolutions of the present Ti-Zr-Nb-Sn alloys were related to the strong beta-stabilizing effect of Nb. Dominant shape memory effect was observed in Ti-20Zr-(9, 10)Nb-3Sn specimens and room temperature superelasticity was observed in Ti-20Zr-(11, 12)Nb-3Sn specimens. Compared with the Ti-20Zr-12Nb-3Sn specimen, the Ti-20Zr-11Nb-3Sn specimen exhibited superior superelasticity. The simultaneous presence of {001}beta < 110>beta texture, Goss texture and room temperature superelasticity in the Ti-20Zr-11Nb-3Sn specimen is beneficial to the practical biomedical application.
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Nam, Tae Hyeon
대학원 (나노신소재융합공학과)
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