Premium
Tracing Memory in Polycrystalline Ferromagnetic Shape‐Memory Alloys
Author(s) -
Wang Y.D.,
Ren Y.,
Li H.,
Choo H.,
Benson M. L.,
Brown D. W.,
Liaw P. K.,
Zuo L.,
Wang G.,
Brown D. E.,
Alp E. E.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200600480
Subject(s) - crystallite , materials science , intergranular corrosion , ferromagnetism , microscale chemistry , shape memory alloy , diffraction , condensed matter physics , crystallography , metallurgy , microstructure , optics , psychology , physics , mathematics education , chemistry
In situ high‐energy X‐ray diffraction experiments reveal the influence of various microstresses and grain orientations on the memory effect in polycrystalline Ni 2 MnGa ferromagnetic shape‐memory alloys during phase transformation (see figure). The “memory” of grain orientation and intergranular stress is evident; however, the microscale “memory” is degraded due to the existence of the intragranular stress.