吴志方,吴江,张磊,吴润,常庆明.高能球磨制备的Al-Pb纳米相复合结构合金中纳米相Pb的体积分数对其长大行为的影响[J].稀有金属材料与工程,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.]
高能球磨制备的Al-Pb纳米相复合结构合金中纳米相Pb的体积分数对其长大行为的影响
投稿时间:2016-12-14  修订日期:2017-03-20
中文关键词:  粗化  铝合金  体积分数的影响  纳米相复合结构合金  高能球磨
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      利用X射线衍射仪、扫描电子显微镜和透射电子显微镜研究了高能球磨制备的Al-Pb纳米相复合结构合金中纳米相Pb的体积分数对其长大行为的影响。结果表明尽管Al-Pb纳米相复合结构中组成相的尺寸均在纳米量级,不同体积分数的纳米相Pb的长大行为均遵循三次方定律。纳米相Pb的粗化速率随其体积分数的增加而增加,增加幅度大于理论在此成分范围内的预测。纳米相Pb的粗化激活能不随合金成分而变化。纳米相Pb的粗化受溶质原子沿溶剂基体的晶界扩散所控制。
The Effect of Volume Fraction on the Coarsening of Pb Nanophase in Al-Pb Nanocomposite Alloys by High Energy Ball Milling
英文关键词:Aluminum alloys  Effect of volume fraction  Nanocomposite alloys  High energy ball milling
英文摘要:
      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.
作者单位E-mail
吴志方 武汉科技大学省部共建耐火材料与冶金国家重点实验室 wuzhifang@wust.edu.cn 
吴江 武汉科技大学省部共建耐火材料与冶金国家重点实验室  
张磊 武汉科技大学省部共建耐火材料与冶金国家重点实验室  
吴润 武汉科技大学省部共建耐火材料与冶金国家重点实验室  
常庆明 武汉科技大学省部共建耐火材料与冶金国家重点实验室  
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