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

页码：29 / 32

页数：4

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