Surface mechanical attrition treatment induced phase transformation behavior in NiTi shape memory alloy

T. Hu; C. S. Wen; J. Lu; S. L. Wu; Y. C. Xin; W. J. Zhang; C. L. Chu; J. C Y Chung; K. W K Yeung; D. T K Kwok; Paul K. Chu

doi:10.1016/j.jallcom.2009.04.004

Author(s)

T. Hu
C. S. Wen
S. L. Wu
Y. C. Xin
W. J. Zhang
C. L. Chu
K. W K Yeung
D. T K Kwok

Detail(s)

Original language	English
Pages (from-to)	298-301
Journal / Publication	Journal of Alloys and Compounds
Volume	482
Issue number	1-2
Publication status	Published - 12 Aug 2009

Link(s)

DOI	DOI https://doi.org/10.1016/j.jallcom.2009.04.004 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-67349133613&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(1ce9de11-312b-409f-b770-bc6320e8e6f2).html

Abstract

The phase constituents and transformation behavior of the martensite B19′ NiTi shape memory alloy after undergoing surface mechanical attrition treatment (SMAT) are investigated. SMAT is found to induce the formation of a parent B2 phase from the martensite B19′ in the top surface layer. By removing the surface layer-by-layer, X-ray diffraction reveals that the amount of the B2 phase decreases with depth. Differential scanning calorimetry (DSC) further indicates that the deformed martensite in the sub-surface layer up to 300 μm deep exhibits the martensite stabilization effect. The graded phase structure and transformation behavior in the SMATed NiTi specimen can be attributed to the gradient change in strain with depth. © 2009 Elsevier B.V. All rights reserved.

Research Area(s)

Martensite stabilization, NiTi shape memory alloy (SMA), Surface mechanical attrition treatment (SMAT), Transformation behavior

Citation Format(s)

[ RIS ] [ BibTeX ]

Surface mechanical attrition treatment induced phase transformation behavior in NiTi shape memory alloy. / Hu, T.; Wen, C. S.; Lu, J. et al.
In: Journal of Alloys and Compounds, Vol. 482, No. 1-2, 12.08.2009, p. 298-301.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Hu, T, Wen, CS, Lu, J, Wu, SL, Xin, YC, Zhang, WJ, Chu, CL, Chung, JCY, Yeung, KWK, Kwok, DTK & Chu, PK 2009, 'Surface mechanical attrition treatment induced phase transformation behavior in NiTi shape memory alloy', Journal of Alloys and Compounds, vol. 482, no. 1-2, pp. 298-301. https://doi.org/10.1016/j.jallcom.2009.04.004

Hu, T., Wen, C. S., Lu, J., Wu, S. L., Xin, Y. C., Zhang, W. J., Chu, C. L., Chung, J. C. Y., Yeung, K. W. K., Kwok, D. T. K., & Chu, P. K. (2009). Surface mechanical attrition treatment induced phase transformation behavior in NiTi shape memory alloy. Journal of Alloys and Compounds, 482(1-2), 298-301. https://doi.org/10.1016/j.jallcom.2009.04.004

Hu T, Wen CS, Lu J, Wu SL, Xin YC, Zhang WJ et al. Surface mechanical attrition treatment induced phase transformation behavior in NiTi shape memory alloy. Journal of Alloys and Compounds. 2009 Aug 12;482(1-2):298-301. doi: 10.1016/j.jallcom.2009.04.004

Hu, T. ; Wen, C. S. ; Lu, J. et al. / Surface mechanical attrition treatment induced phase transformation behavior in NiTi shape memory alloy. In: Journal of Alloys and Compounds. 2009 ; Vol. 482, No. 1-2. pp. 298-301.