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北京石油化工学院2026年研究生招生接收调剂公告
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愉博雅

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[资源] 稳定纳米晶合金的设计-------最新Science

Nanostructured metals are generally unstable; their grains grow rapidly even at low temperatures,
rendering them difficult to process and often unsuitable for usage. Alloying has been found to
improve stability, but only in a few empirically discovered systems. We have developed a theoretical
framework with which stable nanostructured alloys can be designed. A nanostructure stability map based
on a thermodynamic model is applied to design stable nanostructured tungsten alloys. We identify
a candidate alloy, W-Ti, and demonstrate substantially enhanced stability for the high-temperature,
long-duration conditions amenable to powder-route production of bulk nanostructured tungsten. This
nanostructured alloy adopts a heterogeneous chemical distribution that is anticipated by the present
theoretical framework but unexpected on the basis of conventional bulk thermodynamics.
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  • 附件 1 : DesignofStableNanocrystallineAlloys.pdf
  • 2012-08-24 12:56:39, 1.15 M

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简单回复
2012-08-24 16:33   回复  
五星好评  顶一下,感谢分享!
rockkos3楼
2012-08-24 17:05   回复  
五星好评  顶一下,感谢分享!
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2018-05-02 20:56   回复  
五星好评  顶一下,感谢分享!
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