| 单辊淬冷Cu─Pb亚偏晶合金的凝固组织特性 |
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| 引用本文： | 蔡英文,李建国,傅恒志.单辊淬冷Cu─Pb亚偏晶合金的凝固组织特性[J].材料科学与工程学报,1994(4). |
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| 作者姓名： | 蔡英文 李建国 傅恒志 |
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| 作者单位： | 西北工地大学 |
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| 摘 要： | 应用单辊方法，研究了Ｃｕ－Ｐｂ亚偏晶合金的快凝特性，发现其中存在两类性态的组织：等轴晶与共生。对于等轴晶，Ｐｂ的偏析模式得以显著细化，对于共生，其成分范围向亚偏晶端延伸，近偏晶共生质量明显改善，并首次观察到高度规整的放射状共生。进而从传质平衡角度，建立了偏晶共生的控制方程。
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| 关 键 词： | 快速凝固，偏晶，偏析，共生 |
Microstructure of Melt-Spun Cu-Pb Hypomonotectic Alloys |
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| Cai Yingwen, Li Jianguo,Fu Hengzhi.Microstructure of Melt-Spun Cu-Pb Hypomonotectic Alloys[J].Journal of Materials Science and Engineering,1994(4). |
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| Authors: | Cai Yingwen Li Jianguo Fu Hengzhi |
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| Affiliation: | Northwestern Polytechnical University |
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| Abstract: | Characteristics of rapidly solidified Cu-Pb hypomonotectic alloy is searched by melt spinning technique. Two kinds of microstrure, equiaxed crystals and in-situ composites are observed,of which the segregation of lead is greatly reduced in equiaxed crystals, the concentration region for composite growth is extended, the quality of near-monotectic composites is notably improved, and radiated composites are observed for the first time. From the balance of mass transfer, growth model of in-situ monotectic composites is therafter built up. |
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| Keywords: | Rapid solidification Monotectic alloy Segregation In-situ composite |
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