In situ neutron diffraction analysis of grain structure during friction stir processing of an aluminum alloy

被引：8
|
作者：
Woo, W. [2 ]
Feng, Z. [1 ]
Wang, X. -L. [3 ]
An, K. [3 ]
Clausen, B. [4 ]
Sisneros, T. A. [4 ]
Jeong, J. S. [5 ]
机构：
[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA
[2] Korea Atom Energy Res Inst, Div Neutron Sci, Taejon 305353, South Korea
[3] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37830 USA
[4] Los Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA
[5] POSTECH, Grad Inst Ferrous Technol, Pohang 790784, South Korea
来源：
MATERIALS LETTERS | 2012年 / 85卷
关键词：
Dislocation density; Neutron diffraction; Friction stir processing; Peak profile analysis; MECHANICAL-PROPERTIES; MICROSTRUCTURE; CONTRAST;
D O I：
10.1016/j.matlet.2012.06.091
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Significant neutron peak broadening was observed in situ underneath the tool of friction stir processing (FSP) in 6061-16 aluminum alloy. Such broadening was correlated to the dislocation density and subgrain size by using peak profile analysis methods. The high dislocation density of about 1.3 x 10(15) m(-2) underneath the FSP tool sharply decreases to 1.0 x 10(14) m(-2) outside the tool. The quantitative determination is consistent with the high-resolution x-ray and TEM results. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：29 / 32
页数：4
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