组织演变过程的数学描述
(上海大学 材料科学与工程学院,上海 200072)
摘 要: 研究了电磁搅拌法制备半固态铝合金原材料工艺中,主要工艺参数(磁场强度和冷却速度)与非树枝晶组织之间的关系,半定量地描述了非树枝晶组织的演变过程,给出了非树枝晶组织参数随着磁场强度和冷却速度变化的数学关系,为合理选择工艺参数提供了理论指导。
关键字: 半固态成形;铝合金;非树枝晶组织;电磁搅拌
description of evolution of
non-dendritic structure of
aluminum alloy under electromagnetic
stirring condition
(School of Materials Science and Engineering,
Shanghai University, Shanghai 200072,China)
Abstract:The relationship between the main technological parameters(magnetic induction and cooling rate) and the non-dendritic structure of aluminum alloy produced by electromagnetic stirring was studied. The evolution of the non-dendritic structure was semi-quantitative described, and the semi-quantitative relationship between the magnetic induction and cooling rate and the non-dendritic structure parameters was obtained, which offer the theoretic direction to choose the technological parameters for producing the aluminum alloy with non-dendritic structure.
Key words: semi-solid forming; aluminum alloy; non-dendritic structure; electromagnetic stirring