论文部分内容阅读
采用光学显微镜,扫描电镜及能谱仪分析了含铬合金钢锭铸态及均质化后的显微组织和元素偏析规律,建立了均质化过程中元素扩散的动力学模型,旨在奠定大型钢锭均质化制度优化的理论基础。研究结果表明,经过不同时间和温度下的均质化处理后,含铬合金钢锭的元素偏析得到不同程度的改善。本文建立的动力学扩散模型较好地反映了均质化过程中元素的变化规律。
The microstructures and elemental segregation rules of chrome alloy ingot after as-cast and homogenized were analyzed by light microscopy, scanning electron microscopy and energy dispersive spectroscopy. The kinetic model of element diffusion during homogenization was established, Theoretical basis for optimization of ingot homogenization system. The results show that the elemental segregation of chrome-containing alloy ingots is improved to some extent after being homogenized at different time and temperature. The dynamic diffusion model established in this paper can well reflect the change law of elements in the process of homogenization.