X-Ray diffraction analysis of 99.1% recycled aluminium subjected to equal channel angular extrusion

被引：28
作者：
Rebhi, A. [1 ]
Makhlouf, T. [1 ]
Njah, N. [1 ]
机构：
[1] Fac Sci, Appl Met Lab 99UR12 22, Sfax 3000, Tunisia
来源：
PROCEEDINGS OF THE JMSM 2008 CONFERENCE | 2009年 / 2卷 / 03期
关键词：
ECAE; Aluminium; XRD; Williamson-Hall; Halder-Wagner; CRYSTALLITE SIZE DISTRIBUTION; MICROSTRUCTURE; PRINCIPLES; CONTRAST;
D O I：
10.1016/j.phpro.2009.11.090
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The microstructure of Equal Channel Angular Extruded (ECAE) 99.1% aluminium was investigated by X-ray diffraction (XRD) analysis. It was found that the XRD peaks showed a significant broadening, which was related to grain refinement and lattice distortions. For microstrain evolution, the saturation value reached after one pass by ECAE can be explained by accumulated strain hardening of the material during plastic deformation. A significant decrease of the lattice parameter was observed after ECAE. This decrease is caused by the grain compression due to its finite size and to the pressure exerted by the grain surface on to the bulk of the grains. (C) 2009 Elsevier B.V. All rights reserved
引用
收藏
页码：1263 / 1270
页数：8
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