| 冷却速度对锻造TiAl基合金组织演变的影响 |
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| 引用本文： | 唐建成,黄伯云,王健农,贺跃辉,谢鲲.冷却速度对锻造TiAl基合金组织演变的影响[J].中南大学学报(自然科学版),1999(2). |
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| 作者姓名： | 唐建成 黄伯云 王健农 贺跃辉 谢鲲 |
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| 作者单位： | 中南工业大学粉末冶金国家重点实验室 |
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| 基金项目： | 国家“八六三”高技术计划,国家自然科学基金,霍英东教育基金 |
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| 摘 要： | 利用光学显微镜，研究了冷却速度对锻造Ｔｉ４８Ａｌ２Ｃｒ（原子数分数，％）组织演变的影响．结果表明：冷却速度主要影响锻造ＴｉＡｌ基合金组织演变产物的形貌，而对晶团尺寸的影响较小．锻造ＴｉＡｌ基合金在α相转变温度θα以上等温热处理后，采用炉冷、空冷、油冷和水冷，会依次转变为全层状组织、层状组织加魏氏体组织、块状转变组织加魏氏体组织、块状转变组织加羽毛状组织
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| 关 键 词： | TiAl基合金 冷却速度 组织演变 |
EFFECT OF COOLING RATE ON THE MICROSTRUCTURE EVOLUTION OF A FORGED TiAl BASED ALLOY |
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| Tang Jiancheng,Huang Baiyun,Wang Jiannong,He Yuehui,Xie Kun.EFFECT OF COOLING RATE ON THE MICROSTRUCTURE EVOLUTION OF A FORGED TiAl BASED ALLOY[J].Journal of Central South University:Science and Technology,1999(2). |
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| Authors: | Tang Jiancheng Huang Baiyun Wang Jiannong He Yuehui Xie Kun |
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| Abstract: | The effect of cooling rate on the microstructure evolution of a forged TiAl based alloy was investigated through optical microscope. The results show that cooling rate affected the morphology of the microstructure of a forged TiAl based alloy, but had little influence on the colony size. When the alloys, that were isothermally heat treated at temperatures above the alpha transus , were cooled in furnace, air, oil and water, the following products were observed respectively: fully lamellar structure, lamellar structure and widmanstatten structure, massive transformation structure and widmanstatten structure, massive transformation structure and feathery structure. |
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| Keywords: | TiAl based alloy cooling rate microstructure evolution |
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