Inter-American Materials Collaboration: Modeling and Testing the Effects of Texture and Plastic Deformation on the Magnetic Properties of Polycrystalline Ferromagnetic Materials

这个美洲材料合作项目开发和测试磁滞模型，描述纹理和塑性变形对多晶铁磁材料磁性能的影响。该项目汇集了由西南研究所的Martin Sablik和美国西南德克萨斯州立大学的卡洛斯古铁雷斯以及巴西圣保罗的技术研究所（IPT）的Fernando Landslave和圣保罗大学的Ivan Falleiros领导的小组。R。多尔蒂和他的同事，德雷克塞尔大学，与巴西小组合作。在这个项目中解决的主题包括发生在磁化率，剩磁，磁滞损耗和最大磁导率的变化时，材料是从弹性变形点，然后塑性变形，然后回到一个新的弹性状态，现在是从原来的状态变形点。该合作包括美国和巴西参与机构之间的高级研究人员和学生交流。学生将特别受益于各种实验室之间的互动。美国研究人员将受益于巴西同行关于微观结构对钢磁性能影响的实验专业知识。 该奖项由材料研究部，国际科学与工程办公室以及数学和物理科学局多学科活动办公室支持。

This Inter-American Materials Collaboration project develops and tests magnetic hysteresis models that describe the effect of texture and plastic deformation on magnetic properties of polycrystalline ferromagnetic materials. The project brings together groups led by Martin Sablik, Southwest Research Institute, and Carlos Gutierrez, Southwest Texas State University, in the US and Fernando Landgraf, Institute for Technological Research (IPT), and Ivan Falleiros, University of Sao Paulo, in Sao Paulo, Brazil. A related effort on the evolution of texture during plastic deformation of electrical steels is carried out by R. Doherty and colleagues, Drexel University, in collaboration with the Brazilian group. Topics addressed in this project include changes occurring in coercivity, remanence, hysteresis loss, and maximum permeability when the material is taken point by point from elastic deformation, then plastic deformation, and then back to a new elastic state that is now deformed from the original state. The collaboration includes exchanges of senior researchers and students between the participating institutions in the US and Brazil. Students will particularly benefit from the interactions among various laboratories. The US researchers will benefit from the experimental expertise on the effect of microstructure on magnetic properties of steels of the Brazilian counterpart. This award is supported by the Division of Materials Research, the Office of International Science and Engineering, and the Office of Multidisciplinary Activities in the Directorate for Mathematical and Physical Sciences.