Effect of Alloying Elements on Microstructure,Martensitic Transformation and Mechanical Properties of Ni-Mn Based Alloys

作     者：K.Alvarez H.Y.Kim S.Miyazaki 

作者机构：Graduate SchoolUniversity of TsukubaIbaraki 305-8573Japan Institute of Materials ScienceUniversity of TsukubaTsukubaIbaraki 305-8573Japan 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2009年第25卷第5期

页      面：649-654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：express their gratitude to the Ministry of Education Culture and Sports of Japan(MEXT) for partially supporting this research 

主　　题：Ni-Mn based alloys Martensitic transformation temperature L10 phase 

摘      要：The microstructural features, shape memory behavior and mechanical properties of Ni-Mn based alloys were investigated by differential scanning calorimetry （DSC）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM） and thermal cycling test under various stresses. The transformation temperatures shifted toward lower temperatures when adding a third element into the Ni-Mn system. The addition of 10 at. pct Fe increased considerably the mechanical properties exhibiting still high transformation temperatures. However, it was found that in NiMn40Fe10 alloy the martensitic transformation is not thermoelastic in nature. The mechanism of this transformation and the crystallography of Ni-Mn（50-x）-Fex （x=5, 7, 10, 20 at. pct） alloys are presented.