摘要
采用真空感应熔炼的方法研究了金属钙和氧化钙坩埚对铸造高温合金K417G深度脱氧和脱硫的影响。结果表明,Ca能够达到深度脱氧脱硫的效果,可将氧含量(质量分数,下同)由0.0013%降低到0.0006%,硫含量由0.0007%降低到0.0002%,并且合金中实测的ω[Ca]-ω[S]平衡关系与热力学计算结果基本一致;此外,CaO坩埚的脱氧脱硫效果明显,氧含量可降至0.0006%,硫含量可降至小于0.0002%,硫含量的降低与氧化钙坩埚内壁形成了m CaO·n Al_2O_3渣有关,从而实现深度脱硫。
The effects of metal calcium and CaO crucible on deep deoxidation and desulfurization of cast superalloy K417 G were studied by vacuum induction melting. Results show that Ca can achieve the effect of deep deoxidation and desulfurization, the oxygen content decreases from 0.0013% to 0.0006%, and the sulfur content decreases from 0.0007% to 0.0002%. The equilibrium relationship between measured ω[Ca]-ω[S] in the alloy is basically the same as that of the thermodynamic calculation. In addition, the effect of CaO crucible on deoxidation and desulfurization is obvious. Oxygen content can be reduced to 0.0006%, and sulfur content can be reduced to less than 0.0002%. The reduction of sulfur content is related to the formation of m CaO·n Al2O3 slag in the inner wall of CaO crucible, thus realizing deep desulfurization.
作者
王慢慢
杨彦红
王道红
李志海
严红彬
崔传勇
Wang Manman;Yang Yanhong;Wang Daohong;Li Zhihai;Yan Hongbin;Cui Chuanyong(University of Chinese Academy of Sciences,Beijing 100049,China;Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;Jiangsu Feiyue Pump Group Co.Ltd,Taizhou 225300,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2018年第12期3730-3734,共5页
Rare Metal Materials and Engineering
基金
国家自然科学基金(51671189
11332010)
关键词
铸造高温合金
脱氧
脱硫
钙
氧化钙坩埚
cast superalloy
deoxidation
desulfurization
calcium
CaO crucible
