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納米晶體材料熱穩(wěn)定性的研究進(jìn)展
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1.中國計量大學(xué)材料科學(xué)與工程學(xué)院;2.中南大學(xué)材料科學(xué)與工程學(xué)院

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國家自然科學(xué)基金資助(項目號51401197)


Research progress on thermal stabilization of nanocrystalline materials
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1.College of Materials Science and Engineering,China Jiliang University;2.School of Materials Science and Engineering,Central South University

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    摘要:

    納米晶體材料獨特的結(jié)構(gòu)特征使其具有不同于傳統(tǒng)多晶材料的優(yōu)異性能,如何提高納米晶體材料的熱穩(wěn)定性,避免其過度粗化,是近年來材料領(lǐng)域研究的熱點課題。本文綜述了國內(nèi)外對納米晶體材料熱穩(wěn)定性的研究進(jìn)展,簡要介紹了納米晶體材料的微觀結(jié)構(gòu)特點,著重分析了溶質(zhì)原子、第二相顆粒和微觀應(yīng)力等因素對納米晶體材料晶粒長大的影響規(guī)律,介紹了納米晶體材料的熱力學(xué)和動力學(xué)穩(wěn)定機制。

    Abstract:

    The nanocrystalline materials exhibit the microstructure with an average grain size smaller than 100nm, which is responsible for their unique properties. A high thermal stability is the key for the application of nanocrystalline materials. Hence, the grain growth of nanocrystalline materials has been the focus of intense research efforts in recent years. This article reviews the current status of research in this field. The microstructural characteristics of nanocrystalline materials have been introduced. The effects of solute atom, the second particle and internal strain on the thermal stability of nanocrystalline materials are discussed. The basic theoretical models in thermodynamics stabilization and kinetics stabilization are summarized.

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雷若姍,陳廣潤,徐時清,汪明樸.納米晶體材料熱穩(wěn)定性的研究進(jìn)展[J].稀有金屬材料與工程,2018,47(11):3571~3578.[Lei Ruoshan, Chen Guangrun, Xu Shiqing, Wang Mingpu. Research progress on thermal stabilization of nanocrystalline materials[J]. Rare Metal Materials and Engineering,2018,47(11):3571~3578.]
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  • 收稿日期:2017-03-06
  • 最后修改日期:2017-05-24
  • 錄用日期:2017-06-26
  • 在線發(fā)布日期: 2018-12-19
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