Solute atom migration in GH4169 superalloy under electrostatic fields
查看参考文献31篇
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文摘
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Electric field treatment (EFT) was applied on GH4169 alloy during aging at 500-800℃ to investigate the microstructure and property variation of the alloy under the action of EFT. The results demonstrate that the short-distance diff usion of Al, Ti, and Nb atoms can be accelerated by EFT, which results in the coarsening of γ' and γ" phases. Meanwhile, lattice distortion can be caused by the segregation of Fe and Cr atoms, owing to the vacancy flows migrating toward the charged surfaces of the alloy. Therefore, the alloy is hardened by the application of EFT, even if the strength of the alloy is partly reduced, which is caused by precipitation coarsening. |
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来源
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International Journal of Minerals
, Metallurgy and Materials,2013,20(12):1176-1182 【核心库】
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DOI
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10.1007/s12613-013-0852-y
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关键词
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superalloys
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nickel alloys
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electric fields
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aging
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precipitation
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vacancies
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地址
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1.
Northeastern University, Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Shenyang, 110819
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Department of High-temperature Materials, Central Iron and Steel Research Institute, Beijing, 100081
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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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1674-4799 |
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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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国家自然科学基金
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国家973计划
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文献收藏号
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CSCD:5004220
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