TY - GEN
T1 - Microstructures of constrained shape memory alloy nanowires under thermal effects
AU - Dhote, Rakesh P.
AU - Melnik, Roderick V.N.
AU - Zu, Jean W.
AU - Wang, Linxiang
PY - 2010
Y1 - 2010
N2 - In this paper, martensitic transformations in constrained Fe-Pd nanowires are studied using a mesoscopic model analyzed in detail numerically in our earlier papers. The dynamics of squareto-rectangular transformation is modeled by using the modified Ginzburg-Landau theory. The simulations are performed accounting for the thermal effects using the coupled equations of non-linear thermoelasticity. Up to date, these effects have typically been neglected in modeling microstructures at the scales of interest considered here. Nanowires of length 2000 nm and widths ranging from 200 nm to 50 nm are simulated to study the effect of size on the microstructure evolution. There exists a critical width below which the size effect is prominent. We present a series of numerical results demonstrating this phenomenon. We also have carried out the study of variations in values of bulk, shear, and Landau constants to understand the difference in evolved microstructure in the coupled and uncoupled physics.
AB - In this paper, martensitic transformations in constrained Fe-Pd nanowires are studied using a mesoscopic model analyzed in detail numerically in our earlier papers. The dynamics of squareto-rectangular transformation is modeled by using the modified Ginzburg-Landau theory. The simulations are performed accounting for the thermal effects using the coupled equations of non-linear thermoelasticity. Up to date, these effects have typically been neglected in modeling microstructures at the scales of interest considered here. Nanowires of length 2000 nm and widths ranging from 200 nm to 50 nm are simulated to study the effect of size on the microstructure evolution. There exists a critical width below which the size effect is prominent. We present a series of numerical results demonstrating this phenomenon. We also have carried out the study of variations in values of bulk, shear, and Landau constants to understand the difference in evolved microstructure in the coupled and uncoupled physics.
KW - Ginzburg-Landau theory
KW - Low dimensional nanostructures
KW - Martensite
KW - Nanowires
KW - Nonlinear thermoelasticity
KW - Shape memory effect
KW - Square-torectangular transformation
UR - http://www.scopus.com/inward/record.url?scp=84859518347&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859518347&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84859518347
SN - 9780791844151
T3 - ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2010
SP - 597
EP - 603
BT - ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2010
T2 - ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2010
Y2 - 28 September 2010 through 1 October 2010
ER -