(1.中國科學(xué)院 金屬研究所, 沈陽 110016;
2.沈陽大學(xué) 材料工程系, 沈陽 110044)
摘 要: 研究了在真空感應(yīng)爐中使用CaO坩堝熔煉鎳基高溫合金的脫氧效果，分析了加入0.02%C和0.5%Al對脫氧的影響，初步進行了在CaO坩堝中脫氧反應(yīng)的熱力學(xué)計算。研究表明：熔化期可以脫除大部分的氧；采用CaO坩堝，選擇合適的熔煉工藝及C和Al加入量，可使氧的含量降低到小于0.0006%。
關(guān)鍵字: 鎳基高溫合金；真空感應(yīng)熔煉；CaO坩堝；脫氧
induction melting of
Ni-base superalloy
YANG Ke-nu1，GUAN Heng-rong1，HU Zhuang-qi1
（1.Institute of Metal Research，Chinese Academy of
Sciences，Shenyang 110016, China;
2.Department of Materials Engineering，Shenyang
University，Shenyang 110044, China）
Abstract:The deoxidation effect in vacuum induction melting of Ni-base superalloy by using CaO crucible was studied. The influence of adding 0.02%C and 0.5%Al on deoxidation was also analyzed. Thermodynamics calculation of the deoxidation reaction in CaO crucible was done. The results show that most oxygen can be removed in melting period. In CaO crucible, adopting proper melting technology and carbon and aluminium addition amounts， oxygen content could be reduced to below 0.0006%.
Key words: Ni-base superalloy；vacuum induction melting；CaO crucible；deoxidation
