TY - JOUR
T1 - Effect of strong static magnetic field on the microstructure and transformation temperature of Co–Ni–Al ferromagnetic shape memory alloy
AU - Bu, Fan
AU - Xue, Xiangyi
AU - Wang, Jun
AU - Kou, Hongchao
AU - Li, Chao
AU - Zhang, Pingxiang
AU - Beaugnon, Eric
AU - Li, Jinshan
N1 - Publisher Copyright:
© 2018, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2018/11/1
Y1 - 2018/11/1
N2 - The effect of strong static magnetic field (SSMF) on the microstructure and phase transformation temperature of Co38Ni33Al29 ferromagnetic shape memory alloy during heat treatment has been studied. Results indicate that the microstructure and phase transformation temperature are significantly affected by the external SSMF. With the increasing magnetic field intensity, the volume fraction of γ phase decreased from 13.2 to 5.1%, the morphologies of γ phase evolved from rods to discrete stripes, and a clear alignment of γ phase was observed. In addition, the transformation temperatures are also elevated as the magnetic field intensity increases. The martensitic transformation temperature (MS) and the Curie point (TC) rose by 13 K and 10 K respectively when 4 T SSMF was applied. Moreover, the coercivity (HC) dramatically reduced to 11.7 Oe at 4 T magnetic field. Magnetic domains formed in β phase and they became ordered with the enhancing intensities of magnetic field.
AB - The effect of strong static magnetic field (SSMF) on the microstructure and phase transformation temperature of Co38Ni33Al29 ferromagnetic shape memory alloy during heat treatment has been studied. Results indicate that the microstructure and phase transformation temperature are significantly affected by the external SSMF. With the increasing magnetic field intensity, the volume fraction of γ phase decreased from 13.2 to 5.1%, the morphologies of γ phase evolved from rods to discrete stripes, and a clear alignment of γ phase was observed. In addition, the transformation temperatures are also elevated as the magnetic field intensity increases. The martensitic transformation temperature (MS) and the Curie point (TC) rose by 13 K and 10 K respectively when 4 T SSMF was applied. Moreover, the coercivity (HC) dramatically reduced to 11.7 Oe at 4 T magnetic field. Magnetic domains formed in β phase and they became ordered with the enhancing intensities of magnetic field.
UR - http://www.scopus.com/inward/record.url?scp=85053561255&partnerID=8YFLogxK
U2 - 10.1007/s10854-018-0079-9
DO - 10.1007/s10854-018-0079-9
M3 - 文章
AN - SCOPUS:85053561255
SN - 0957-4522
VL - 29
SP - 19491
EP - 19498
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 22
ER -