| Behaviour of Internal Stress in Melt—Spun Ni—Mn—Ga Ribbons |
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| 作者姓名： | 赵韦人 李健靓 等 |
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| 作者单位： | [1]DepartmentofPhysics,ShantouUniversity,Shantou515063 [2]InstituteofFunctionalMaterials,CentralIronandSteelResearchInstitute,Beijing100081 |
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| 摘 要： | 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.
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| 关 键 词： | 奥氏体合金 内应力 微结构 |
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