Microstructure of ultrafine-grained fcc metals produced by severe plastic deformation

被引：129
|
作者：
Gubicza, J
Chinh, NQ
Krállics, G
Schiller, I
Ungár, T
机构：
[1] Eotvos Lorand Univ, Dept Solid State Phys, H-1518 Budapest, Hungary
[2] Eotvos Lorand Univ, Dept Gen Phys, H-1518 Budapest, Hungary
[3] Budapest Univ Technol & Econ, Budapest, Hungary
来源：
CURRENT APPLIED PHYSICS | 2006年 / 6卷 / 02期
关键词：
X-ray diffraction line profile analysis; dislocation density; severe plastic deformation; ultrafine-grained fcc metals;
D O I：
10.1016/j.cap.2005.07.039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure of ultrafine-grained fee metals (Al, Al-Mg alloys, Cu and Ni) produced by applying severe plastic deformation (SPD) techniques is Studied by X-ray diffraction line profile analysis. It is found that Mg addition promotes efficiently the reduction of the crystallite size and the increase of the dislocation density in Al during SPD process. In Al-Mg alloys the crystallite size reaches its minimum value at lower strain than the dislocation density suturates. The results also show that the yield strength correlates well with that calculated from the dislocation density using the Taylor equation. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：194 / 199
页数：6
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