| 低过热度半连续铸造AlMg0.9Si0.6合金重熔工艺的研究 |
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| 引用本文： | 赵大志,于福晓,刘芳,何克准,左良.低过热度半连续铸造AlMg0.9Si0.6合金重熔工艺的研究[J].铸造,2011,60(11). |
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| 作者姓名： | 赵大志 于福晓 刘芳 何克准 左良 |
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| 作者单位： | 1. 东北大学材料与冶金学院材料成型与控制工程研究所,辽宁沈阳,110819
2. 东北大学材料各向异性与织构工程教育部重点实验室,辽宁沈阳,110819 |
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| 基金项目： | 国家高技术研究发展计划资助项目，国家自然科学基金资助项目 |
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| 摘 要： | 采用光学显微镜及图像分析软件,研究了A1Mg0.9Si0.6合金低过热度半连续铸造坯料在不同加热温度及保温时间下重熔的微观形貌及尺寸特征,结合差热分析的方法研究加热过程中组织演变及晶粒长大过程.结果表明:重熔加热温度及保温时间共同影响着合金重熔组织的演变进程,随着加热温度升高及保温时间延长,晶粒逐渐球化并长大；加热温度越高,组织演变速度越快；保温时间越长,晶粒球化并长大越明显；有效控制AlMg0.9Si0.6合金重熔加热温度及保温时间,能够获得均匀、圆整且相对细小的半固态浆料组织.
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| 关 键 词： | 半连续铸造 AlMg0.9Si0.6合金 重熔 组织演变 |
Study onReheating Process of AlMg0.9Si0.6 Alloy by Semi-Continuous Casting of Low Superheat |
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| ZHAO Da-zhi,YU Fu-xiao,LIU Fang,HE Ke-zhun,ZUO Liang.Study onReheating Process of AlMg0.9Si0.6 Alloy by Semi-Continuous Casting of Low Superheat[J].Foundry,2011,60(11). |
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| Authors: | ZHAO Da-zhi YU Fu-xiao LIU Fang HE Ke-zhun ZUO Liang |
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| Affiliation: | ZHAO Da-zhi1,YU Fu-xiao1,LIU Fang2,HE Ke-zhun2,ZUO Liang2(1.Department of Metal Forming,School of Materials and Metallurgy,Northeastern University,Shenyang 110819,Liaoning,China,2.Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education)Northeastern University,China) |
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| Abstract: | Microstructures and grain size of AlMg0.9Si0.6 alloy billet prepared by semi-continuous casting of low superheat,and reheated at different heating temperature and with different holding time,were observed by optical microscope.The image analyzing software combining with differential scanning calorimetry(DSC)was used to investigate the microstructure evolution and grain growth during reheating process.The results show that the microstructural evolution is affected by reheating temperature and holding time.Wi... |
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| Keywords: | semi-continuous casting AlMg0 9Si0 6 alloy reheating microstructural evolution |
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