| 锥桶式流变成形机制备A356铝合金半固态浆料的研究 |
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| 引用本文： | 张帆,康永林,杨柳青,丁瑞华.锥桶式流变成形机制备A356铝合金半固态浆料的研究[J].特种铸造及有色合金,2010,30(6). |
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| 作者姓名： | 张帆 康永林 杨柳青 丁瑞华 |
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| 作者单位： | 北京科技大学材料科学与工程学院 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目，国家高技术研究发展计划(863计划)资助项目 |
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| 摘 要： | 采用自主研发的锥桶式流变成形机(TBR),研究了浇注温度、内锥桶转速及剪切温度对A356铝合金半固态组织的影响规律。结果表明,适当降低浇注温度、提高内锥桶转速或降低剪切温度,均有利于获得初生相颗粒细小、圆整、分布均匀的半固态组织;当浇注温度为660℃、内锥桶转速为500r/min、剪切温度为590℃时,获得了理想的半固态浆料,其初生固相颗粒平均直径为41μm,形状因子为0.89;半固态组织的形成受到枝晶破碎和枝晶抑制生长两方面因素的共同影响。
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| 关 键 词： | 半固态 A356铝合金 显微组织 |
Preparation of Semi-solid A356 Aluminum Alloy Slurry by TBR (Taper Barrel Rheomoulding) Technology |
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| Zhang Fan,Kang Yonglin,Yang Liuqing,Ding Ruihua.Preparation of Semi-solid A356 Aluminum Alloy Slurry by TBR (Taper Barrel Rheomoulding) Technology[J].Special Casting & Nonferrous Alloys,2010,30(6). |
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| Authors: | Zhang Fan Kang Yonglin Yang Liuqing Ding Ruihua |
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| Affiliation: | Zhang Fan,Kang Yonglin,Yang Liuqing,Ding Ruihua (School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing,China) |
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| Abstract: | Effects of pouring temperature,rotating velocity of inner barrel and shearing temperature on microstructure of semi-solid A356 aluminum alloy slurry which was prepared by self-developed TBR machine were investigated. The results indicate that it is favorable to obtain semi-solid aluminum alloy slurry structure with fine and spherical solid particles uniformly distributed in the eutectic matrix by reducing pouring temperature,increasing rotating speed of inner barrel or decreasing shearing temperature approp... |
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| Keywords: | TBR |
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