磁-热协同控制大型复杂薄壁铸件成形的基础研究

This project will research the solidification processing of the large complex thin-walled castings under magnetic-thermal coordinated control condition. The research is focused on the effect of electromagnetic disturbance on the melt flow in front of the solid-liquid interface with positive temperature gradient, on the temperature and concentration field, interface morphology evolution and grain refinement and its effect on solidification defect. The interaction of magnetic field parameters, thermal parameters and casting structure will also be investigated. Based on the research results, the mechanism governing the microstructure formation under magnetic-thermal coordinated control conditions will be established. The critical issues controlling the solidification process of large complex thin-walled castings will be solved to develop a new technique based on magnetic-thermal coordinated control to meet the needs for producing fine- grained high performance large complex thin-walled castings.

本项目研究磁-热协同控制大型复杂薄壁铸件的凝固过程，重点研究界面前沿正温度梯度条件下施加电磁扰动对界面前沿熔体流动、温度场和浓度场的影响规律，对界面演化和晶粒细化以及对凝固缺陷的影响规律，电磁参数、热控参数和铸件结构之间的交互影响规律，揭示磁-热协同控制凝固的组织形成机理，解决磁-热协同控制大型复杂薄壁铸件凝固过程的关键问题，发展磁-热协同控制凝固新技术，满足国民经济发展对于大型复杂薄壁铸件的制备技术需求。

本项目研究磁-热协同控制大型复杂薄壁铸件的凝固过程，重点研究界面前沿正温度梯度条件下施加电磁扰动对界面前沿熔体流动、温度场和浓度场的影响规律，对界面演化和晶粒细化以及对凝固缺陷的影响规律，电磁参数、热控参数和铸件结构之间的交互影响规律，揭示磁-热协同控制凝固的组织形成机理，解决磁-热协同控制大型复杂薄壁铸件凝固过程的关键问题，发展磁-热协同控制凝固新技术，满足国民经济发展对于大型复杂薄壁铸件的制备技术需求。