Influence of elastic anisotropy on structural nanoscale textures

P Lloveras, T Castán, M Porta, A Planes, A Saxena - Physical review letters, 2008 - APS
P Lloveras, T Castán, M Porta, A Planes, A Saxena
Physical review letters, 2008APS
We study the influence of elastic anisotropy on nanoscale precursor textures that exist in
some shape-memory alloys and show that tweed occurs in the limit of high elastic anisotropy
while a nanocluster phase-separated state occurs for values of anisotropy inhibiting the
formation of martensite. These results are consistent with specific heat data, elastic constant
measurements, and zero-field cooling or field cooling experiments in nonstoichiometric NiTi
alloys.
Abstract
We study the influence of elastic anisotropy on nanoscale precursor textures that exist in some shape-memory alloys and show that tweed occurs in the limit of high elastic anisotropy while a nanocluster phase-separated state occurs for values of anisotropy inhibiting the formation of martensite. These results are consistent with specific heat data, elastic constant measurements, and zero-field cooling or field cooling experiments in nonstoichiometric NiTi alloys.
American Physical Society
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