| REHEATING TEMPERATURE CONTRAST AND MICROSTRUCTURES OF 7075 Al ALLOY CAST BY LIQUIDUS SEMI-CONTINUOUS CASTING |
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| 作者姓名： | J. Dong G.M. Lu and J.Z. CuiThe Key Lab. of Electromagnetic Processing of Material Ministry of Education Northeastern University Shenvane China |
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| 作者单位： | J. Dong，G.M. Lu and J.Z. CuiThe Key Lab. of Electromagnetic Processing of Material，Ministry of Education，Northeastern University，Shenvane 110004，China |
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| 基金项目： | The National Natural Science Foundation of China (Grants No. 59974009) is greatly acknowledged for their financial support. |
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| 摘 要： | In this study, reheating of liquidus semi-continuous cast billets of 7075 Al alloy was carried out in a resistance furnace, and the temperature contrast of the outer and the center of the reheated billets was investigated, then the reheating microstructures were investigated. Results show that: the difference of temperature between the outer and center is small and the difference of their microstructures are also small. During reheating at 576℃ the spheroidization of grains is significant after 5min and no rosettes are visible after 20min by optical microscopy. Similar observations were madeon materials reheated at 596℃, but the ripening process is faster. The grains growup to 30-60μm, fine enough for thixoforming.
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REHEATING TEMPERATURE CONTRAST AND MICROSTRUCTURES OF 7075 Al ALLOY CAST BY LIQUIDUS SEMI-CONTINUOUS CASTING |
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| J. Dong,G.M. Lu and J.Z. CuiThe Key Lab. of Electromagnetic Processing of Material,Ministry of Education,Northeastern University,Shenvane ,China.REHEATING TEMPERATURE CONTRAST AND MICROSTRUCTURES OF 7075 Al ALLOY CAST BY LIQUIDUS SEMI-CONTINUOUS CASTING[J].Acta Metallurgica Sinica(English Letters),2002(6). |
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| Authors: | J Dong GM Lu and JZ CuiThe Key Lab of Electromagnetic Processing of Material Ministry of Education Northeastern University Shenvane China |
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| Affiliation: | J. Dong,G.M. Lu and J.Z. CuiThe Key Lab. of Electromagnetic Processing of Material,Ministry of Education,Northeastern University,Shenvane 110004,China |
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| Abstract: | |
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| Keywords: | reheating 7075 Al alloy liquidus casting micro structure |
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