In Situ Synthesis of Nanocrystalline Intermetallic Compound Layer during Surface Mechanical Attrition Treatment of Zirconium
查看参考文献14篇
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文摘
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The surface mechanical attrition treatment (SMAT) technique was developed to synthesize a nanocrystalline (NC)layer on the surface of metallic materials for upgrading their overall properties and performance. In this paper, by means of SMAT to a pure zirconium plate at the room temperature, repetitive multidirectional peening of steel shots (composition (wt%): 1C, 1.5Cr, base Fe) severely deformed the surface layer. A NC surface layer consisting of the intermetallic compound FeCr was fabricated on the surface of the zirconium. The microstructure characterization of the surface layer was performed by using X-ray diffraction analysis, optical microscopy, scanning and transmission electron microscopy observations. The NC surface layer was about 25 μm thick and consisted of the intermetallic compound FeCr with an average grain size of 25+10 nm. The deformation-induced fast diffusion of Fe and Cr from the steel shots into Zr occurred during SMAT, leading to the formation of intermetallic compound. In addition, the NC surface layer exhibited an ultrahigh nanohardness of 10.2 GPa. |
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来源
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材料热处理学报
,2004,25(5II):1242-1246 【核心库】
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关键词
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nanocrystalline
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intermetallic compound
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surface layer
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deformation
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diffusion
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地址
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1.
中科院力学所, State Key Laboratory of Nonlinear Mechanics, Chinese Academy of Sciences, 北京, 100080
2.
中科院金属所, Shenyang National Laboratory for Materials Sciences, Chinese Academy of Sciences, Shenyang, 110016
3.
LASMIS, University of Technical of Troyes, 法国
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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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1009-6264 |
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学科
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金属学与金属工艺 |
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文献收藏号
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CSCD:1847864
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