TY - JOUR
T1 - Martensitic transformation in NiCoMnSn metamagnetic shape memory alloy powders
AU - Ito, Kouhei
AU - Ito, Wataru
AU - Umetsu, Rie Y.
AU - Nagasako, Makoto
AU - Kainuma, Ryosuke
AU - Fujita, Asaya
AU - Oikawa, Katsunari
AU - Ishida, Kiyohito
PY - 2008/8
Y1 - 2008/8
N2 - Martensitic and magnetic properties of NiCoMnSn metamagnetic shape memory alloy powders obtained by a gas atomization method were investigated. The as-atomized powders showed a dendritic structure which changed to a single-phase one by annealing at 1173 K for 2 h. Although the martensitic transformation behavior was almost the same as that in bulk samples, the transformation thermal interval, namely, Ms -Mf, of the as-annealed powders decreased with increasing annealing time. In the powders annealed at 1173 K for 144 h, a reversible metamagnetic phase transition was confirmed by the application of a magnetic field of 7 T.
AB - Martensitic and magnetic properties of NiCoMnSn metamagnetic shape memory alloy powders obtained by a gas atomization method were investigated. The as-atomized powders showed a dendritic structure which changed to a single-phase one by annealing at 1173 K for 2 h. Although the martensitic transformation behavior was almost the same as that in bulk samples, the transformation thermal interval, namely, Ms -Mf, of the as-annealed powders decreased with increasing annealing time. In the powders annealed at 1173 K for 144 h, a reversible metamagnetic phase transition was confirmed by the application of a magnetic field of 7 T.
KW - Martensitic transformation
KW - Metamagnetic shape memory alloys
KW - Powder metallurgy
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U2 - 10.2320/matertrans.MRP2008126
DO - 10.2320/matertrans.MRP2008126
M3 - Article
AN - SCOPUS:52449122854
SN - 1345-9678
VL - 49
SP - 1915
EP - 1918
JO - Materials Transactions
JF - Materials Transactions
IS - 8
ER -