Stress-induced martensitic phase transformation in intermetallic nickel aluminum nanowires
Park, HS (Park, Harold S.)
NANO LETTERS, 6 (5): 958-962 MAY 2006
Atomistic simulations are utilized to demonstrate a stress-induced martensitic phase transformation in intermetallic nickel aluminum (NiAl) nanowires. The martensitic phase transformation occurs by the propagation and annihilation of 101 twinning planes and transforms the initially B2 NiAl nanowires to a body-centered tetragonal (BCT) phase. The instability of the resulting BCT phase allows pseudoelastic recovery of inelastic strains on the order of 40% at all deformation temperatures.
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