Microstructure and Stress-Rupture Property of Large-Scale Complex Nickel-Based Single Crystal Casting
查看参考文献30篇
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文摘
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The microstructure and stress-rupture property of the large-scale complex single crystal (SX) casting DD10 were investigated in high-rate solidification process. It is found that the primary dendrite arm spacing (PDAS) does not increase monotonically with the height increase. When across the platform, the temperature gradient increases due to the effect of platform, and the corresponding PDAS decreases. The distribution of eutectic volume fraction in large-scale complex SX casting is affected by PDAS, solid back diffusion, and the development of high order dendrites. The eutectic volume fraction contained in the sample taken below the platform decreases with the height increase. While the eutectic volume fraction contained in the sample taken upper the platform increases gradually with the height increase. After heat treatment, most of the c/c0 eutectics are eliminated and the components are distributed uniformly. The similar stress rupture properties of the samples at different heights in the same direction are obtained. |
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来源
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Acta Metallurgica Sinica(English Letters)
,2018,31(8):887-896 【核心库】
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DOI
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10.1007/s40195-018-0716-6
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关键词
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Large-scale single crystal
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Platform
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Primary dendrite arm spacing
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Eutectic volume fraction
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Stress-rupture property
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地址
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1.
Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016
2.
University of Chinese Academy of Sciences, Beijing, 100049
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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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1006-7191 |
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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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supported financially by the National Key Research and Development Program of China
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国家自然科学基金
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文献收藏号
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CSCD:6303468
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