| 过冷DD3单晶高温合金的净化影响因素及途径 |
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| 引用本文： | 刘峰,郭学锋. 过冷DD3单晶高温合金的净化影响因素及途径[J]. 铸造, 2000, 49(6): 318-320 |
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| 作者姓名： | 刘峰 郭学锋 |
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| 作者单位： | 西北工业大学凝固技术国家重点实验室!西安710072，西北工业大学凝固技术国家重点实验室!西安710072，西北工业大学凝固技术国家重点实验室!西安710072，西安交通大学机械工程学院，西安710049，西北工业大学凝固技术国家重点实验室!西安710072 |
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| 基金项目： | 国家自然科学基金 !59871 0 4 1，航空科学基金 !98H530 93，陕西省自然科学基金! 98C1 3 |
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| 摘 要： | 以特制的复合熔盐作为净化剂在氩气氛保护及循环过热条件下去除DD3单晶高温合金熔体中的异质晶核 ,获得了最大 2 1 0K过冷度。详细探讨了复合熔盐净化机制 ,同时对比分析了纯循环过热和熔融玻璃净化方式对于DD3单晶高温合金获得深过冷的可行性
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| 关 键 词： | 镍基高温合金 DD3高温合金 循环过热 净化剂 复合熔盐 深过冷 |
Influencing Factors and Process on Purification for High Undercooling of DD3 Single Crystal Superalloy |
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| LIU Feng ,CAI Yu ,GUO Xue feng ,,YANG Gen cang. Influencing Factors and Process on Purification for High Undercooling of DD3 Single Crystal Superalloy[J]. China Foundry, 2000, 49(6): 318-320 |
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| Authors: | LIU Feng CAI Yu GUO Xue feng YANG Gen cang |
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| Affiliation: | LIU Feng 1,CAI Yu 1,GUO Xue feng 1,2,YANG Gen cang 1 |
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| Abstract: | DD3 single crystal superalloy was de nucleated by cyclical superheating within a special molten compound salt made up of CaF 2 AlF 3 CaO (Al 2O 3 TiO 2) under the protection of Argon,in which a substantial undercooling degree of 210K for the superalloy was obtained.Mechanism of purification by compound salt was discussed detailly.Meanwhile,the results of thermal cycle and molten glass purification were compared with it.It was proved that the compound molten salt was the best purification agent for DD3 single crystal superalloy. |
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| Keywords: | nickel matrix superalloy DD3 superalloy cyclical superheating purification agent compound salt high undercooling |
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