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Preparation of Ni-W-10Y203 refiner and refinement mechanism in a superalloy

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文摘 A novel grain refiner composed of nickel, tungsten and yttria was prepared by the powder metallurgy way. The microstructure of the refiner alloy was studied by optical microscope (OM), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The refinement process was simplized. It was shown that the alloy grains could be refined by addition of the refiners apparently even at high pouring temperature. The average grain size of the refiner free alloy was 4 mm, and 0.4 mm for the refined alloy. The fine-grain superalloy has excellent mechanical properties at intermediate temperature. The refinement mechanism was discussed.
来源 Acta Metallurgica Sinica(English Letters) ,2011,24(5):365-372 【核心库】
关键词 Superalloy ; Refiner ; Grain refinement ; Microstructure
地址

Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016

语种 英文
文献类型 研究性论文
ISSN 1006-7191
学科 金属学与金属工艺
文献收藏号 CSCD:4344282

参考文献 共 17 共1页

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