TY  - JOUR
A1  - Nellesen, Jens
A1  - Laquai, R.
A1  - Müller, B. R.
A1  - Kupsch, Andreas
A1  - Hentschel, M. P.
A1  - Anar, N. B.
A1  - Soppa, E.
A1  - Tillmann, W.
A1  - Bruno, Giovanni
T1  - In situ analysis of damage evolution in an Al/ Al2O3 MMC under tensile load by synchrotron X-ray refraction imaging
JF  - Journal of materials science
N2  - The in situ analysis of the damage evolution in a metal matrix composite (MMC) using synchrotron X-ray refraction radiography (SXRR) is presented. The investigated material is an Al alloy (6061)/10 vol MMC after T6 heat treatment. In an interrupted tensile test the gauge section of dog bone-shaped specimens is imaged in different states of tensile loading. On the basis of the SXRR images, the relative change of the specific surface (proportional to the amount of damage) in the course of tensile loading was analyzed. It could be shown that the damage can be detected by SXRR already at a stage of tensile loading, in which no observation of damage is possible with radiographic absorption-based imaging methods. Moreover, the quantitative analysis of the SXRR images reveals that the amount of damage increases homogeneously by an average of 25% with respect to the initial state. To corroborate the experimental findings, the damage distribution was imaged in 3D after the final tensile loading by synchrotron X-ray refraction computed tomography (SXRCT) and absorption-based synchrotron X-ray computed tomography (SXCT). It could be evidenced that defects and damages cause pronounced indications in the SXRCT images.
Y1  - 2018
U6  - https://doi.org/10.1007/s10853-017-1957-x
SN  - 0022-2461
SN  - 1573-4803
VL  - 53
IS  - 8
SP  - 6021
EP  - 6032
PB  - Springer
CY  - New York
ER  -