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AlSi7Mg合金坯料在固液两相区的初始结构对变形的影响 被引量:1

EFFECT OF AlSi7Mg ALLOY SLURRY INITIAL MICROSTRUCTURE IN THE SOLID-LIQUID ZONE ON THIXOTROPIC DEFORMATION
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摘要 本文论述了AlSi7Mg合金在半固态状态下的初始结构对压缩变形行为的影响.结果表明:AlSi7Mg合金坯料的初始显微 结构的固相颗粒尺寸及分布、颗粒形貌、颗粒团聚化程度对半固态合金坯料的表观粘度有重要的影响具有初始细枝晶结构(蔷薇状结 构)的合金应力水平较低,具有中等枝晶和粗枝晶结构的合金应力水平较高.非枝晶组织半固态合金变形时固相颗粒变形力的传递数学 模型为: The effect of AISi7Mg alloy slurry microstructure in semi-solid zone on the compression deformation was described in the paper. Semi-solid AISi7Mg alloy slurry viscosity depends on alloy initial microstructure variables. The initial microstructure variables of AISi7Mg alloy slurry include the degree of agglomeration among solid particles, particle size, and size distribution and particle morphology. These microstructure variables control the inherent constitutive thixotropic behavior of semi--solid AISi7Mg alloy slurry.
出处 《金属学报》 SCIE EI CAS CSCD 北大核心 2000年第3期247-250,共4页 Acta Metallurgica Sinica
基金 国家863计划资助项目!715-012-004
关键词 初始结构 半固态区间 触变变形 铝合金 AlSi7Mg alloy slurry, initial microstructure, semi-solid zone, thixotropic deformation
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参考文献1

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  • 1毛卫民,甄子胜,闫时建,钟雪友.连续冷却条件下半固态AZ91D合金的流变特性[J].铸造技术,2004,25(9):706-709. 被引量:2
  • 2毛卫民,闫时建,甄子胜,钟雪友.半固态AZ91D镁合金的触变性[J].金属学报,2005,41(2):191-195. 被引量:12
  • 3张志峰,徐骏,石力开.新型半固态加工专用铝合金的成分设计[J].热加工工艺,2005,34(9):3-5. 被引量:4
  • 4毛卫民,白月龙,高松福,汤国兴.半固态AlSi7Mg铝合金的新型流变成形[J].材料研究学报,2006,20(5):469-473. 被引量:14
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