Influence of elastic anisotropy on structural nanoscale textures.
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.
Departament d'Estructura i Constituents de la Matèria, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Catalonia, Spain.
Pol
P
Lloveras
Teresa
T
Castán
Marcel
M
Porta
Antoni
A
Planes
Avadh
A
Saxena