Intergrowth of C phase within μ phase in a Re-containing Ni-base single crystal superalloy
查看参考文献27篇
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文摘
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Precipitation of topologically close-packed phases in a Re-containing Ni-base single crystal superalloy was studied under elevated temperature by in situ transmission electron microscopy. Above 1150 ◦C, a new intergrowth structure called C phase was found within μ phase with a defined crystallographic orientation relationship. Elements mapping analysis reveals that C phase has a similar element composition as μ phase, but contains a lower level of Cr, W and Re. With increasing temperature, the proportion of C phase increases gradually. At 1250 ◦C, C phase becomes the dominant precipitate. It is demonstrated that C phase is more thermodynamically stable than μ phase above 1150 ◦C that leads to an intergrowth pathway from μ phase to C phase. |
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来源
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Journal of Materials Science & Technology
,2018,34(5):806-810 【核心库】
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DOI
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10.1016/j.jmst.2017.04.009
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关键词
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Ni-base superalloy
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Phase transformation
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Precipitation
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地址
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1.
Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016
2.
Division of Energy and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1005-0302 |
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学科
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金属学与金属工艺 |
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基金
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financially supported by the National Natural Science Foundation of China
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中国科学院“百人计划”项目
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文献收藏号
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CSCD:6240454
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