Behaviour of Internal Stress in Melt—Spun Ni—Mn—Ga Ribbons
行为的内应力的熔融纺丝镍锰镓色带作者机构: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] 0805[工学-材料科学与工程(可授工学、理学学位)] 080502[工学-材料学] 0704[理学-天文学]
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.