| 氧化钇坩埚对镍三铝基高温合金返回料纯净化熔炼的影响 |
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| 引用本文： | 白鹏,张花蕊,李一鸣,孔玢,张虎.氧化钇坩埚对镍三铝基高温合金返回料纯净化熔炼的影响[J].稀有金属材料与工程,2019,48(2):406-410. |
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| 作者姓名： | 白鹏 张花蕊 李一鸣 孔玢 张虎 |
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| 作者单位： | 北京航空航天大学,北京航空航天大学,北京航空航天大学,北京航空航天大学,北京航空航天大学 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目）、国家科技支撑计划 |
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| 摘 要： | 本文研究了Y2O3坩埚对N3Al基高温合金返回料纯净化熔炼的影响，并对使用Y2O3坩埚和MgO坩埚进行真空感应熔炼的结果进行了对比。结果表明：使用Y2O3坩埚对N3Al基高温合金IC21返回料进行纯净化熔炼有利于降低返回料中的H、N和O含量。和使用MgO坩埚相比分别降低了50%,80%,和80%。最低可以达到0.5 wppm,1 wppm 和2 wppm的数值。当精炼温度高于1550?C或精炼时间超过5分钟时，精炼参数对纯净化熔炼的效果影响很小。
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| 关 键 词： | 氧化钇坩埚 高温合金 脱氧 热力学 |
| 收稿时间： | 2017/8/28 0:00:00 |
| 修稿时间： | 2017/11/2 0:00:00 |
Effects of Y2O3 Crucible on Purification of Ni3Al-Based Superalloy Scraps |
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| Bai Peng,Zhang Huarui,Li Yiming,Kong Bin and Zhang Hu.Effects of Y2O3 Crucible on Purification of Ni3Al-Based Superalloy Scraps[J].Rare Metal Materials and Engineering,2019,48(2):406-410. |
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| Authors: | Bai Peng Zhang Huarui Li Yiming Kong Bin and Zhang Hu |
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| Affiliation: | School of Materials Science and Engineering,Beihang University,School of Materials Science and Engineering,Beihang University,School of Materials Science and Engineering,Beihang University,School of Materials Science and Engineering,Beihang University,School of Materials Science and Engineering,Beihang University |
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| Abstract: | The effect of Y2O3 crucible on the purification of Ni3Al-based superalloy IC21 scraps during Vacuum Induction Melting was investigated. Different purification results were compared when using MgO crucible and Y2O3 crucible. The results indicated that Y2O3 crucible was more effective for reducing the content of hydrogen, nitrogen and oxygen. Hydrogen, nitrogen, and oxygen content using Y2O3 were about 50%, 80%, and 80% lower compared with MgO crucible, to 0.5 wppm, 1 wppm and 2 wppm in IC21 scraps, respectively. When melting temperature was above 1550°C or reaction time exceeded 5 minutes, it had limited impact on dehydrogenation and denitrification process when using Y2O3 crucible. Melting for 5 minutes at 1750°C or melting for 30 minutes at 1650°C, the content of oxygen reached the highest level, which was 6 wppm. |
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| Keywords: | Y2O3 crucible superalloy deoxidation thermodynamics |
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