Behaviour of Internal Stress in Melt-Spun Ni-Mn-Ga Ribbons

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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	LI Jian-Liang
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