| 变质处理及热循环对AI-17%Si合金组织和储热性能的影响 |
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| 引用本文： | 王波群,张仁元,祝海云.变质处理及热循环对AI-17%Si合金组织和储热性能的影响[J].广东有色金属学报,2009(4). |
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| 作者姓名： | 王波群 张仁元 祝海云 |
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| 作者单位： | 广东工业大学材料与能源学院; |
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| 基金项目： | 国家“863”项目“太阳能热发电金属相变储热技术及传热锅炉研究”(No.2007AA05Z460) |
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| 摘 要： | 以AlTi5B中间合金和磷盐为复合变质剂,通过金相分析和差热分析等方法研究了变质处理和熔化-凝固热循环对Al-17%Si合金显微组织、储热性能的影响.结果表明;经过磷盐和AlTi5B复合变质处理后的合金,原粗大块状、条状的初晶硅明显减小且棱角钝化,较大针状的共晶硅变为颗粒状;在480～620℃随循环次数增加初晶硅颗粒由小变大,潜热值下降.
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| 关 键 词： | AlTi5B中间合金 磷盐 Al-17%Si合金 显微组织 潜热值 |
The influence of modification and heat cycle on morphology and heat storage properties of Al-17%Si alloy |
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| WANG Bo-qun,ZHANG Ren-yuan,ZHU Hai-yun.The influence of modification and heat cycle on morphology and heat storage properties of Al-17%Si alloy[J].Journal of Guangdong Non-Ferrous Metals,2009(4). |
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| Authors: | WANG Bo-qun ZHANG Ren-yuan ZHU Hai-yun |
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| Affiliation: | WANG Bo-qun,ZHANG Ren-yuan,ZHU Hai-yun (Faculty of Material and Energy,Guangdong University of Technology,Guangzhou 510090,China) |
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| Abstract: | The effect of modification and melt-consolidation heat cycling on morphology and heat storage performance of Al-17%Si alloy using AlTi5B master alloys and phosphorus salts as the compound modifier was investigated by metallographic analysis and differential thermal analysis.It was found that the size of both the large block and strip shaped primary silicon was significantly reduced and angular passivated,and large acicular eutectic silicon was turned into granule after modification treatment of AlTi5B and p... |
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| Keywords: | AlTi5B master alloys phosphor salt Al-17%Si alloy micromorphology latent heat |
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