| 变质工艺对过共晶Al-Si合金连铸坯组织的影响 |
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| 引用本文： | 张训,张志峰,李大全,徐骏.变质工艺对过共晶Al-Si合金连铸坯组织的影响[J].特种铸造及有色合金,2011,31(2). |
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| 作者姓名： | 张训 张志峰 李大全 徐骏 |
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| 作者单位： | 北京有色金属研究总院有色金属加工事业部 |
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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： | 采用美国标准TP-1模具及模拟方法,研究了Al-Si-P变质剂的加入量、熔体浇注温度以及变质保温时间对过共晶Al-Si合金连铸坯料凝固组织的影响规律.结果表明,Al-Si-P变质剂加入量(超过0.02%)和变质保温时间对合金显微组织细化的影响不明显;而浇注温度对初生Si的大小分布影响较大,浇注温度越高,初生Si越细小、分布也越均匀.在合适的工艺匹配条件下,可以获得初生Si细小、形貌较为规则圆整、分布均匀的显微组织.
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| 关 键 词： | 连续铸造 Al-Si-P变质剂 TP-1模具 过共晶Al-Si-Cu-Mg合金 初生Si 微观组织 |
Effects of Modification Treatment on Microstructure of Continuous Casting Hypereutectic Al-16.3Si-4.5Cu-0.55MgAIIoy Billets |
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| Zhang Xun,Zhang Zhifeng,Li Daquan,Xu Jun.Effects of Modification Treatment on Microstructure of Continuous Casting Hypereutectic Al-16.3Si-4.5Cu-0.55MgAIIoy Billets[J].Special Casting & Nonferrous Alloys,2011,31(2). |
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| Authors: | Zhang Xun Zhang Zhifeng Li Daquan Xu Jun |
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| Affiliation: | Zhang Xun,Zhang Zhifeng,Li Daquan,Xu Jun(Nonferrous Metals Processing Division,General Research Institute for Non-ferrous Metals,Beijing,China) |
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| Abstract: | Effects of modification treatment,such as Al-Si-P addition,pouring temperature and holding time,on microstructure of continuous casting hypereutectic Al-Si-Cu-Mg alloy were investigated by means of US standard TP-1 mold and analogue method.The results show that effects of Al-Si-P modifier addition(more than 0.05%)and holding time on refinement of microstructure of the alloy can be ignored,however,pouring temperature has the obvious effects on distribution of primary Si phase in the microstructure.With incre... |
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| Keywords: | Continuous Casting Al-Si-P Modifier TP-1 Mold Hypereutectic Al-Si-Cu-Mg Alloy Primary Si Phase Microstructure |
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