| 双级雾化快速凝固高硅铝合金粉末形貌及组织特征 |
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| 引用本文： | 袁晓光,徐达鸣,张卫方,李庆春.双级雾化快速凝固高硅铝合金粉末形貌及组织特征[J].金属学报,1996,32(10):1034-1038. |
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| 作者姓名： | 袁晓光 徐达鸣 张卫方 李庆春 |
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| 作者单位： | 哈尔滨工业大学金属精密热加工重点实验室 |
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| 摘 要： | 采用双级雾化装置制备了四种铝合金粉末，分析了粉末的粒度组成，颗粒形貌和微观组织，计算了粉末的冷却速度，双级雾化粉末的平均粒度比单级气体雾化粉末细两倍，平均冷却速度高一个数量级；Ａｌ－Ｓｉ二元合金中，细小颗粒的微观组织主要由不同Ｓｉ含量的块状过饱和固溶体组成。
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| 关 键 词： | 快速凝固 双极雾化 粉末 铝合金 |
| 收稿时间： | 1996-10-18 |
| 修稿时间： | 1996-10-18 |
MORPHOLOGY AND MICROSTRUCTURE OF ALUMINIUM ALLOY POWDER BY TWO-STAGE ATOMIZATION |
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| YUAN Xiaoguang,XU Daming,ZHANG Weifang,LI Qingchun.MORPHOLOGY AND MICROSTRUCTURE OF ALUMINIUM ALLOY POWDER BY TWO-STAGE ATOMIZATION[J].Acta Metallurgica Sinica,1996,32(10):1034-1038. |
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| Authors: | YUAN Xiaoguang XU Daming ZHANG Weifang LI Qingchun |
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| Abstract: | In this paper,four aluminium alloy powders were prepared in a two-stage atomization equipment.The particle sizes, morphology and microstructure were examined.The cooling rate of powder was also determined.The average size of particles by two-stage atomization is double finer than that by gas atomization,and the average cooling rate is ten times as high as that by gas atomization.The microstructure of particle in Al-Si alloy mainly consists of block supersaturation solid solutions with different contents of silicon. |
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| Keywords: | rapid solidification two-stage atomization powder aluminium alloy |
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