| 过冷Fe-Co合金的包晶凝固 |
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| 引用本文： | 刘宁,杨根仓,刘峰,杨长林.过冷Fe-Co合金的包晶凝固[J].材料导报,2011,25(8):57-60. |
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| 作者姓名： | 刘宁 杨根仓 刘峰 杨长林 |
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| 作者单位： | 江苏科技大学冶金与材料工程学院;西北工业大学凝固技术国家重点实验室; |
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| 基金项目： | 国家自然科学基金(50501020;50771084); 江苏省高校自然科学基金(09KJB430004) |
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| 摘 要： | 采用熔融玻璃净化法使Fe-Co包晶合金实现了深过冷快速凝固。当熔体过冷度较小时,Fe-Co包晶合金的凝固组织为典型的包晶组织。借助电子探针分析和DTA差热分析,证实了非平衡条件下Fe-Co包晶合金凝固过程中发生了包晶反应和包晶转变。研究表明,深过冷Fe-Co包晶合金的非平衡凝固过程从理论上可以划分为4个阶段:初生δ相的形核与生长、包晶反应、包晶转变和γ相的外延生长。
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| 关 键 词： | Fe-Co合金 过冷 凝固 包晶反应 包晶转变 |
Peritectic Solidification of Undercooled Fe-Co Alloy |
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| LIU Ning,YANG Gencang,LIU Feng,YANG Changlin.Peritectic Solidification of Undercooled Fe-Co Alloy[J].Materials Review,2011,25(8):57-60. |
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| Authors: | LIU Ning YANG Gencang LIU Feng YANG Changlin |
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| Affiliation: | LIU Ning1,2,YANG Gencang2,LIU Feng2,YANG Changlin2 (1 School of Metallurgy and Materials Engineering,Jiangsu University of Science and Technology,Zhangjiagang 215600,2 State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072) |
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| Abstract: | Adopting molten fluxing purification technology,rapid solidification of undercooled Fe-Co peritectic alloy was investigated.At low undercooling range,the microstructure of undercooled Fe-Co peritectic alloy was found to be typical peritectic morphology.In the presence of electron probing analysis and differential thermal analysis,peritectic reaction and peritectic transformation were verified to occur in the undercooled Fe-Co melt.Finally,the peritectic solidification process of undercooled Fe-Co peritectic... |
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| Keywords: | Fe-Co alloy undercooling solidification peritectic reaction peritectic transformation |
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