組織演變過程的數(shù)學(xué)描述
(上海大學(xué) 材料科學(xué)與工程學(xué)院，上海 200072)
摘 要: 研究了電磁攪拌法制備半固態(tài)鋁合金原材料工藝中，主要工藝參數(shù)(磁場強度和冷卻速度)與非樹枝晶組織之間的關(guān)系，半定量地描述了非樹枝晶組織的演變過程，給出了非樹枝晶組織參數(shù)隨著磁場強度和冷卻速度變化的數(shù)學(xué)關(guān)系，為合理選擇工藝參數(shù)提供了理論指導(dǎo)。
關(guān)鍵字: 半固態(tài)成形；鋁合金；非樹枝晶組織；電磁攪拌
description of evolution of
non-dendritic structure of
aluminum alloy under electromagnetic
stirring condition
ZHU Ming-yuan，SHI Wen
（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
