高能球磨制备Al-Pb纳米相复合结构合金中纳米相Pb体积分数对其长大行为影响（英文）
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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 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 is in nanometer range. The coarsening rate of Pb nanophase increases distinctly as the volume fraction increases, and 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.
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 is in nanometer range. The coarsening rate of Pb nanophase increases distinctly as the volume fraction increases, and 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.
引文
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2 Zhu M,Wang H,Ouyang L Z et al.International Journal of Hydrogen Energy[J],2006,31(2):251
3 Cha S I,Hong S H,Ha G B et al.Scripta Mater[J],2001,44(8-9):1535
4 Zhu M,Gao Y,Chuang C Y et al.Wear[J],2000,242(1-2):47
5 Sharma A S,Biswas K,Basu B.Metallurgical and Materials Transactions A[J],2014,45(1):482
6 Liu X,Zeng M Q,Ma Y et al.Wear[J],2012,294(31):387
7 Liu X,Zeng M Q,Ma Y et al.Materials Science and Engineering A[J],2009,506(1-2):1
8 Sheng H W,Zhou F,Hu Z Q et al.Journal of Materials Research[J],1998,13(2):308
9 Lifshitz I M,Slyozov V V.Journal of Physics and Chemistry of Solids[J],1961,19(1-2):35
10 Wagner C.Berichte Der Bunsengesellschaft Für Physikalische Chemie[J],1961,65:581
11 Ardell A J.Acta Metallurgica[J],1972,20(1):61
12 Brailsford A D,Wynblatt P.Acta Metallurgica[J],1979,27(3):489
13 Davies C K L,Nash P,Stevens R N.Acta Materialia[J],1980,28(2):179
14 Tokuyama M,Kawasaki K.Physica A[J],1984,123(2-3):386
15 Voorhees P W,Glicksman M E.Metallurgical Transactions A[J],1984,15(6):1081
16 Ma Y,Ardell A J.Acta Materialia[J],2007,55(13):4419
17 He Y B,Ye S Y,Naser J et al.Journal of Materials Science[J],2000,35(23):5973
18 Rowenhorst D J,Kuang J P,Thornton K et al.Acta Materialia[J],2006,54(8):2027
19 Ardell A J.Scripta Metallurgica et Materialia[J],1990,24(2):343
20 Bender W,Ratke L.Scripta Metallurgica et Materialia[J],1993,28(6):737
21 Wilde J R,Greer A L.Materials Science and Engineering A[J],2001,304-306:932
22 Zhu M,Wu Z F,Zeng M Q et al.Journal of Materials Science[J],2008,43(9):3259
23 Langford J L.Journal of Applied Crystalline[J],1978,11(1):10
24 Gabrisch H,Kjeldgaard L,Johnson E et al.Acta Materialia[J],2001,49(20):4259
25 Baldan A.Journal of Materials Science[J],2002,37(11):2171
26 Baldan A.Journal of Materials Science[J],2002,37(12):2379
27 Ma E,He J H,Schilling P J.Physical Review B:Condensed Matter[J],1997,55(9):5542
28 Gale W E,Totemeier T C.Smithells Materials Reference Book[M].Butterworth-Heinemann,2004:11
29 Kang S S,Yoon D N.Metallurgical Transactions A[J],1982,13(8):1405