Chin. Phys. Lett.  2003, Vol. 20 Issue (3): 427-429    DOI:
Original Articles |
Behaviour of Internal Stress in Melt-Spun Ni-Mn-Ga Ribbons
ZHAO Wei-Ren1;LI Jian-Liang2;QI Yan2;WANG Xin-Lin2
1Department of Physics, Shantou University, Shantou 515063 2Institute of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081
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ZHAO Wei-Ren, LI Jian-Liang, QI Yan et al  2003 Chin. Phys. Lett. 20 427-429
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Abstract We investigate the martensitic transition of melt-spun Ni-Mn-Ga ribbons, during which an abrupt release of internal stress occurs. The release results in the appearance of two peaks on the curve of field-induced strains versus temperature. During and after the transformation, a large lag of field-induced strains was observed, indicating a competition between the stress energy and Zeemann energy. The lag leads to an unusual relation of the strains to the inducing field.

Keywords: 81.30.Kf      81.20.Zx      75.20.En     
Published: 01 March 2003
PACS:  81.30.Kf (Martensitic transformations)  
  81.20.Zx  
  75.20.En (Metals and alloys)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I3/0427
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