Twin boundary-induced intrinsic strengthening in Ni

被引：3
作者：
Barabash, R. I. [1 ]
Rollett, A. [2 ]
Lebensohn, R. A. [3 ]
Barabash, O. M. [4 ]
Liu, W. [5 ]
Pang, J. W. L. [1 ]
机构：
[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[2] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[3] Los Alamos Natl Lab, Los Alamos, NM 87544 USA
[4] Univ Tennessee, Knoxville, TN 37996 USA
[5] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA
来源：
THIN SOLID FILMS | 2013年 / 530卷
关键词：
Twin boundaries; Grain boundaries; Strain field; X-ray diffraction; X-RAY MICRODIFFRACTION; DISLOCATIONS; STRAIN;
D O I：
10.1016/j.tsf.2012.03.106
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The manuscript presents a combined experimental/simulation study of the intrinsic strengthening of the material near twin boundaries. Polychromatic X-ray micro Laue diffraction together with electron backscattering diffraction shows that dislocation slippage is suppressed near the twin boundaries. Indentation demonstrates increased hardness in the immediate vicinity of the twin boundary. Distinct slip bands are observed in the interior of the macroscopic similar to 500 mu m thick twin. Fast oscillations of lattice rotations are found within each slip band. Crystal plasticity analysis using a spectral formulation finds a similar dependence of the plastic response of the matrix and the twin depending on their orientation and initial structural conditions. (C) 2012 Elsevier B. V. All rights reserved.
引用
收藏
页码：14 / 19
页数：6
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