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高能球磨制備的Al-Pb納米相復(fù)合結(jié)構(gòu)合金中納米相Pb的體積分?jǐn)?shù)對(duì)其長大行為的影響
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武漢科技大學(xué)省部共建耐火材料與冶金國家重點(diǎn)實(shí)驗(yàn)室,武漢科技大學(xué)省部共建耐火材料與冶金國家重點(diǎn)實(shí)驗(yàn)室,武漢科技大學(xué)省部共建耐火材料與冶金國家重點(diǎn)實(shí)驗(yàn)室,武漢科技大學(xué)省部共建耐火材料與冶金國家重點(diǎn)實(shí)驗(yàn)室,武漢科技大學(xué)省部共建耐火材料與冶金國家重點(diǎn)實(shí)驗(yàn)室

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國家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


The Effect of Volume Fraction on the Coarsening of Pb Nanophase in Al-Pb Nanocomposite Alloys by High Energy Ball Milling
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The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology

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Stability research of nanocomposite in immiscible system under temperature field and electric,magnetic field

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    摘要:

    利用X射線衍射儀、掃描電子顯微鏡和透射電子顯微鏡研究了高能球磨制備的Al-Pb納米相復(fù)合結(jié)構(gòu)合金中納米相Pb的體積分?jǐn)?shù)對(duì)其長大行為的影響。結(jié)果表明盡管Al-Pb納米相復(fù)合結(jié)構(gòu)中組成相的尺寸均在納米量級(jí),不同體積分?jǐn)?shù)的納米相Pb的長大行為均遵循三次方定律。納米相Pb的粗化速率隨其體積分?jǐn)?shù)的增加而增加,增加幅度大于理論在此成分范圍內(nèi)的預(yù)測。納米相Pb的粗化激活能不隨合金成分而變化。納米相Pb的粗化受溶質(zhì)原子沿溶劑基體的晶界擴(kuò)散所控制。

    Abstract:

    The effect of volume fraction on the coarsening of Pb nanophase in Al-Pb nanocomposite alloys prepared by high energy ball milling has been studied by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The coarsening of Pb nanophase with different volume fractions in Al-Pb nanocomposite alloys follows the cubic growth law even though the size of the constituent phase was in nanometer range. The coarsening rate of Pb nanophase increases distinctly as the volume fraction increases, the variation of coarsening rate is greater than the theoretical prediction in this composition range. The activation energy for coarsening of Pb nanophase does not vary with volume fraction. The coarsening of Pb nanophase is controlled by grain boundary diffusion for solute atoms in solvent matrix.

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吳志方,吳江,張磊,吳潤,常慶明.高能球磨制備的Al-Pb納米相復(fù)合結(jié)構(gòu)合金中納米相Pb的體積分?jǐn)?shù)對(duì)其長大行為的影響[J].稀有金屬材料與工程,2018,47(7):1993~1998.[Wu Zhifang, Wu Jiang, Zhang Lei, Wu Run, Chang Qingming. The Effect of Volume Fraction on the Coarsening of Pb Nanophase in Al-Pb Nanocomposite Alloys by High Energy Ball Milling[J]. Rare Metal Materials and Engineering,2018,47(7):1993~1998.]
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  • 收稿日期:2016-12-14
  • 最后修改日期:2017-03-20
  • 錄用日期:2017-12-13
  • 在線發(fā)布日期: 2018-10-10
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