| WSP流变铸造与球化处理对Al-18%Si-5%Fe合金组织和性能的影响 |
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| 引用本文： | 管仁国,曹富荣,赵占勇,黄红乾,张秋生,王超.WSP流变铸造与球化处理对Al-18%Si-5%Fe合金组织和性能的影响[J].中国有色金属学报,2011(9). |
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| 作者姓名： | 管仁国 曹富荣 赵占勇 黄红乾 张秋生 王超 |
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| 作者单位： | 东北大学材料与冶金学院; |
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| 基金项目： | 国家自然科学基金重点和面上资助项目(51034002,50974038); 中央高校基本科研业务费资助项目(N090502003) |
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| 摘 要： | 提出了波浪形倾斜板流变铸造(WSP)装置制备过共晶Al-Si-Fe合金的方法,对Al-18%Si-5%Fe合金流变铸造与球化处理进行研究。结果表明,WSP流变铸造可以明显改善合金中初晶硅、Al18Si10Fe5和Al8Si2Fe相的形貌。随着浇注温度降低,各相趋于细化和球化。WSP流变铸造过程中合金组织的形成源于3种机制:结晶雨带来的晶核增殖,斜板强冷却作用下晶体抑制生长和流动剪切作用下晶体破碎。WSP流变铸造与球化处理进一步改善Al-18%Si-5%Fe合金组织,合金维氏硬度达到87.5。在干摩擦条件下Al-18%Si-5%Fe合金的磨损率达到5.4 mg/h。
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| 关 键 词： | 过共晶Al-Si合金 波浪形倾斜板 流变铸造 球化 |
Effects of wavelike sloping plate rheocasting and spheroidisation on microstructures and properties of Al-18%Si-5%Fe alloy |
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| GUAN Ren-guo,CAO Fu-rong,ZHAO Zhan-yong,HUANG Hong-qian,ZHANG Qiu-sheng,WANG Chao.Effects of wavelike sloping plate rheocasting and spheroidisation on microstructures and properties of Al-18%Si-5%Fe alloy[J].The Chinese Journal of Nonferrous Metals,2011(9). |
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| Authors: | GUAN Ren-guo CAO Fu-rong ZHAO Zhan-yong HUANG Hong-qian ZHANG Qiu-sheng WANG Chao |
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| Affiliation: | GUAN Ren-guo,CAO Fu-rong,ZHAO Zhan-yong,HUANG Hong-qian,ZHANG Qiu-sheng,WANG Chao (School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China) |
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| Abstract: | A novel method of preparing hypereutectic Al-Si-Fe alloy was proposed by wavelike sloping plate(WSP) rheocasting device,and the rheocasting and spheroidisation treatment of Al-18%Si-5%Fe alloy were investigated.The results reveal that the morphologies of primary crystal Si,Al18Si10Fe5 and Al8Si2Fe phase in this alloy can be improved obviously by WSP rheocasting.With the decrease of pouring temperature,various phases tend to be refined and spheroidised.The formation of microstructures in this alloy originate... |
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| Keywords: | hypereutectic Al-Si alloy wavelike sloping plate rheocasting spheroidisation |
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