Inter-American Materials Collaboration: Investgation of Grain Scale Deformation and Recrystallization In Columnar Grained Electrical Steels with a <100> Fiber Texture

美洲材料合作：用热电偶研究柱状晶粒电工钢的晶粒变形和再结晶

• 批准号: 0303395
• 负责人: Roger Doherty
• 金额: $ 34.9万
• 依托单位: Drexel University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-15 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0303395&HistoricalAwards=false
• 关键词: Inter; American; Materials; Collaboration; Investgation

This Inter-American Materials Collaboration between the groups of R. Doherty and S. Kalinindi at Drexel University and F. Landgraf at the Institute of Technological Research (IPT) in Sao Paolo, Brazil examines the evolution of texture during plastic deformation of electrical steels. The project focuses on the retention of the desirable 100 fiber texture normal to the sheet in rolled and recrystallized Fe-Si electrical steel. This texture is known to be the ideal texture of motor cores that are radially magnetized. A related effort on the modeling of the magnetic properties of the textured steel is carried out by M. Sablik, Southwest Research Institute, and C. Gutierrez, Southwest Texas State University, in collaboration with the Brazilian group. The research examines the development of the deformation microstructure, on a grain-by-grain basis, in fully characterized, directionally solidified, Fe-Si columnar samples, during plane strain compression. The compression is applied along the fiber axis. The objectives are (i) to develop the insights required for fully predictive models and (ii) to provide samples in which the microstructure, relevant for recrystallization, has been characterized as a function of deformation. The processing method, developed for the scientifically studied columned-grained ingots, is then, in close collaboration with the Brazilian group, applied to the industrially important twin-roll cast sheets. The final technical objective is improved electrical motor steel. In addition this project increases further the scientific and education interaction with the group in Brazil, adding a valuable education experience for the students in both countries. 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.

德雷克塞尔大学的 R. Doherty 和 S. Kalinindi 小组以及巴西圣保罗技术研究所 (IPT) 的 F. Landgraf 小组之间的这项美洲材料合作研究了电工钢塑性变形过程中织构的演变。该项目的重点是在轧制和再结晶铁硅电工钢中保留与板材垂直的理想 100 纤维织构。这种织构被认为是径向磁化的电机铁芯的理想织构。西南研究所的 M. Sablik 和西南德克萨斯州立大学的 C. Gutierrez 与巴西小组合作开展了纹理钢磁性建模的相关工作。该研究在平面应变压缩过程中，在完全表征的定向凝固 Fe-Si 柱状样品中逐个晶粒地研究变形微观结构的发展。压缩沿着纤维轴施加。 目标是（i）开发完全预测模型所需的见解，以及（ii）提供样品，其中与再结晶相关的微观结构已被表征为变形的函数。该加工方法是针对经过科学研究的柱状晶粒锭而开发的，随后与巴西集团密切合作，应用于工业上重要的双辊铸片。最终的技术目标是改进电机钢。此外，该项目进一步加强了与巴西团队的科学和教育互动，为两国学生增加了宝贵的教育经验。该奖项得到了材料研究部、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的支持。