Spatially resolved strain measurements in Mo-alloy micropillars by differential aperture x-ray microscopy

被引：24

作者：

Bei, H. ^{[1
]}

Barabash, R. I. ^{[1
,2
]}

Ice, G. E. ^{[1
]}

Liu, W. ^{[3
]}

Tischler, J. ^{[3
]}

George, E. P. ^{[1
,4
]}

机构：

[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Ctr Mat Proc, Knoxville, TN 37996 USA

[3] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[4] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 07期

关键词：

D O I：

10.1063/1.2975371

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spatially resolved strain distributions in the NiAl matrix and the similar to 550-1000 nm Mo fibers of a NiAl-Mo eutectic were investigated by microbeam x-ray diffraction. Position sensitive d-spacings for the individual phases were obtained from spatially resolved and energy-resolved Laue patterns. For embedded Mo fibers, the measured elastic strain is consistent with the predicted thermal mismatch strain between the NiAl and Mo phases. However, when the NiAl matrix is etched back to expose Mo micropillars, the d-spacing increases to that of unconstrained Mo, indicating release of the compressive residual strain in the Mo fibers. (c) 2008 American Institute of Physics.

引用

页数：3

共 13 条

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