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氧化釔坩堝對鎳三鋁基高溫合金返回料純凈化熔煉的影響
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北京航空航天大學(xué)

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TF133.2

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國家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）、國家科技支撐計(jì)劃


Effects of Y2O3 Crucible on Purification of Ni3Al-Based Superalloy Scraps
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School of Materials Science and Engineering,Beihang University

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    摘要:

    本文研究了Y2O3坩堝對N3Al基高溫合金返回料純凈化熔煉的影響，并對使用Y2O3坩堝和MgO坩堝進(jìn)行真空感應(yīng)熔煉的結(jié)果進(jìn)行了對比。結(jié)果表明：使用Y2O3坩堝對N3Al基高溫合金IC21返回料進(jìn)行純凈化熔煉有利于降低返回料中的H、N和O含量。和使用MgO坩堝相比分別降低了50%,80%,和80%。最低可以達(dá)到0.5 wppm,1 wppm 和2 wppm的數(shù)值。當(dāng)精煉溫度高于1550?C或精煉時間超過5分鐘時，精煉參數(shù)對純凈化熔煉的效果影響很小。

    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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白鵬,張花蕊,李一鳴,孔玢,張虎.氧化釔坩堝對鎳三鋁基高溫合金返回料純凈化熔煉的影響[J].稀有金屬材料與工程,2019,48(2):406~410.[Bai Peng, Zhang Huarui, Li Yiming, Kong Bin, Zhang Hu. Effects of Y2O3 Crucible on Purification of Ni3Al-Based Superalloy Scraps[J]. Rare Metal Materials and Engineering,2019,48(2):406~410.]
DOI：10.12442/j. issn.1002-185X.20170771

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  • 收稿日期:2017-08-28
  • 最后修改日期:2017-11-02
  • 錄用日期:2017-11-08
  • 在線發(fā)布日期: 2019-03-15
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