Departmental Papers (MSE)

Document Type

Journal Article

Date of this Version

2010

Abstract

Like martensitic transformations (MTs), inverse martensitic transformations (IMTs) are shear-dominant diffusionless transformations, but are driven by reduction in interfacial energies rather than bulk free energies, and exhibit distinctive behavior such as instantaneous initiation (like spinodal decomposition) and self-limiting lengthscale. Bulk Zr metal is known to undergo normal MT from the high-temperature bcc phase to the low-temperature hcp phase. Using molecular dynamics simulations we demonstrate that, unlike in the bulk, an IMT to the bcc structure can occur in (1100)-oriented hcp Zr nanowires at low temperatures, which is driven by the reduction in the nanowire surface energy. The bcc domains subsequently become distorted and transform into a new (1120)-oriented hcp domain, leading to reorientation of the nanowire. This behavior has implications for the study of structural transformations at the nanoscale and surface patterning.

Comments

Suggested Citation:
Li, S. Z, Ding, J. Li, X. Ren, et. al. "Inverse martensitic transfromation in Zr nanowires." Physical Review B Vol. 81, 245433.

© American Physical Society
http://dx.doi.org/10.1103/PhysRevB.81.245433

Share

COinS
 

Date Posted: 04 November 2010

This document has been peer reviewed.