Title of article :
Atomic-size effect on the microstructural properties of Ni2FeGa Original Research Article
Author/Authors :
Huairuo Zhang، نويسنده , , Guang-Heng Wu، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2011
Pages :
10
From page :
1249
To page :
1258
Abstract :
The microstructural properties of melt-spun ribbon of the ferromagnetic shape-memory Heusler alloy Ni2FeGa have been investigated by transmission electron microscopy. Two kinds of micromodulated structures, Fe-rich and Ga-rich, have been established. The Fe-rich micromodulated structure is formed by Fe atoms partially replacing Ga atoms on {3 5 0} planes in the L21 structure. The Ga-rich micromodulated structure concerns Ga atoms partially replacing Fe atoms on {3 + n, 5 + n, 0}(n ⩾ 0) planes. The Fe-rich and Ga-rich micromodulated structures originate from spinodal decomposition of the Fe and Ga compositions, which is closely related to the difference of atomic sizes of Ni, Fe and Ga.
Keywords :
Structural modulation , Spinodal decomposition , Order–disorder phenomena , Transmission electron microscopy , Heusler alloy
Journal title :
ACTA Materialia
Serial Year :
2011
Journal title :
ACTA Materialia
Record number :
1145392
Link To Document :
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