Comment on “Pseudoelasticity of Cu–Zr nanowires via stress-induced martensitic phase transformations” [Appl. Phys. Lett. 95, 021911 (2009)]

Sutrakar, Vijay Kumar; Mahapatra, D. Roy
September 2009
Applied Physics Letters;9/28/2009, Vol. 95 Issue 13, p136101
Academic Journal
Recently, a novel stress-induced phase transformation in an initial <100>/{100} B2-CuZr nanowire has been reported for the first time [Sutrakar and Mahapatra, Mater. Lett. 63, 1289 (2009)]. Following this, a martenisitic phase transformation in Cu–Zr nanowire was shown [Cheng et al., Appl. Phys. Lett. 95, 021911 (2009)] using the same idea [Sutrakar and Mahapatra, Mater. Lett. 63, 1289 (2009)]. The pseudoelastic recovery of the bct phase of Cu–Zr by unloading has also been shown [Cheng et al., Appl. Phys. Lett. 95, 021911 (2009)]. They also tested the epitaxial bain path [Alippi et al., Phys. Rev. Lett. 78, 3892 (1997)] and reported that the bct phase in the nanowire is metastable, whereas the bulk counterpart is unstable. This aspect is re-examined in this comment with corrected results.


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