2013
DOI: 10.1016/j.actamat.2013.09.013
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Using X-ray microbeam diffraction to study the long-range internal stresses in aluminum processed by ECAP

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Cited by 14 publications
(28 citation statements)
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“…The principal stresses near the boundaries were measured to be about 112 MPa, or roughly 0.75 of the flow stress. Later works by the authors used synchrotron X-ray microbeam diffraction to examine the LRISs within the grain/subgrain interiors along the pressing and +22.5 o off-axis directions (using a single reflection) for ECAP AA1050 after 1, 2, 4, and 8 passes [7,8]. It was found that the results were consistent with the composite model.…”
Section: Introductionsupporting
confidence: 71%
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“…The principal stresses near the boundaries were measured to be about 112 MPa, or roughly 0.75 of the flow stress. Later works by the authors used synchrotron X-ray microbeam diffraction to examine the LRISs within the grain/subgrain interiors along the pressing and +22.5 o off-axis directions (using a single reflection) for ECAP AA1050 after 1, 2, 4, and 8 passes [7,8]. It was found that the results were consistent with the composite model.…”
Section: Introductionsupporting
confidence: 71%
“…While earlier works by the authors [7,8] reported LRISs in samples of identical composition and processing parameters, the work reported here is fundamentally more rigorous and qualitatively more comprehensive due to the complete tensor analysis. Full elastic strain/stress tensors from low dislocation density areas within ECAP AA1050 after 1, 2, and 8 passes processed by route B C were measured using synchrotron X-ray microbeam diffraction at beam line 34ID-E of the Advanced Photon Source (APS) at Argonne National Laboratory.…”
Section: Introductionmentioning
confidence: 79%
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“…There have been several attempts to directly evaluate the nature of the long-range internal stresses in metals processed using SPD techniques. [28][29][30] Figure 7 The relationship between microhardness and distance from the center of the disk for WE43 alloy: after extrusion deformation and after HPT processing for different numbers of turns.…”
Section: Microstructurementioning
confidence: 99%
“…The results of such analysis can determine the geometry that could provide the lowest inhomogeneity coefficient, preserving a good relationship with a high shear deformation [8,9]. Besides, the determination of the residual stress state, in the vicinity of the die walls and the core of the sample, is highly pertinent [10][11][12], as the friction effects significantly change the microdeformations.…”
Section: Introductionmentioning
confidence: 99%