Effect of Volume Fraction on the Coarsening of Pb Nanophase in Al-Pb Nanocomposite Alloys Prepared by High Energy Ball Milling

被引：0

作者：

Wu Zhifang ^{[1
]}

Wu Jiang ^{[1
]}

Zhang Lei ^{[1
]}

Wu Run ^{[1
]}

Chang Qingming ^{[1
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2018年 / 47卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Pb nanophase coarsening; volume fraction; aluminum alloy; nanocomposite alloys; high energy ball milling; OSTWALD RIPENING THEORIES; NICKEL-BASE SUPERALLOYS; CO-CU; KINETICS; MICROSTRUCTURE; BEHAVIOR; PROGRESS; FE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

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 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.

引用

页码：1993 / 1998

页数：6

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