| Al-5Ti-B和稀土Y复合添加对A356合金半固态凝固组织的影响 |
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| 引用本文： | 胡咏梅,刘政.Al-5Ti-B和稀土Y复合添加对A356合金半固态凝固组织的影响[J].铸造,2011,60(9). |
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| 作者姓名： | 胡咏梅 刘政 |
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| 作者单位： | 1. 江西理工大学工程研究院,江西赣州,341000
2. 江西理工大学机电工程学院,江西赣州,341000 |
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| 基金项目： | 江西理工大学校级课题(JXXJ10085); 江西省自然科学基金项目资助(0650047); 江西省教育厅科技项目(GJJ09229) |
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| 摘 要： | 采用稀土Y及Al-5Ti-B中间合金对A356铝合金进行细化处理,并用低温浇注技术制备半固态坯料.研究了单独添加Al-5Ti-B和稀土Y以及两者复合添加时对A356铝合金半固态凝固组织的影响.研究结果表明,Al-5Ti-B和稀土Y对A356铝合金半固态初生相的形貌及尺寸均有不同程度的改善.将两者复合添加时,可显著提高合金中初生相的形貌及尺寸,得到细小、圆整且分布均匀的半固态组织,其添加量的最佳组合为0.02％的Ti与0.5％的Y.探讨了两者复合添加对合金凝固组织的细化机理.
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| 关 键 词： | Al-5Ti-B 稀土Y A356铝合金 半固态 低温浇注 细化机理 |
Effect of Compound Additive Al-5Ti-B and Y on Solidification Microstructure of Semi-Solid A356 Aluminum Alloy |
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| HU Yong-mei,LIU Zheng.Effect of Compound Additive Al-5Ti-B and Y on Solidification Microstructure of Semi-Solid A356 Aluminum Alloy[J].Foundry,2011,60(9). |
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| Authors: | HU Yong-mei LIU Zheng |
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| Affiliation: | HU Yong-mei1,LIU Zheng2(1.Engineering Research Institute,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China,2.Faculty of Mechanical and Electronical Engineering,China) |
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| Abstract: | Semi-solid blank of A356 aluminum alloy was manufactured by low temperature pouring after grain-refined by master alloy Al-5Ti-B and rare earth Y.The effects of Al-5Ti-B,Y and the compound additive(Al-5Ti-B+rare earth Y)on the solidification microstructure of semi-solid A356 Al alloy were researched.The results indicate that adding Al-5Ti-B or rare earth Y can improve both the grain size and morphology of primary phase of semi-solid A356,and adding the compound of Al-5Ti-B and Y can markedly improve the gra... |
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| Keywords: | Al-5Ti-B rare earth Y A356 aluminum alloy semi-solid low temperature pouring refining mechanism |
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