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

作     者：赵韦人 李健靓 等 

作者机构：DepartmentofPhysicsShantouUniversityShantou515063 InstituteofFunctionalMaterialsCentralIronandSteelResearchInstituteBeijing100081 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2003年第20卷第3期

页      面：427-429页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：国家863计划 国家自然科学基金 

主　　题：Martensitic transformations 

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.