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X-ray diffraction analysis of three-dimensional residual stress fields reveals origins of thermal fatigue in uncoated and coated steel

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Zitation

Kirchlechner, C., Martinschitz, K. J., Daniel, R., Mitterer, C., Donges, J., Rothkirch, A., et al. (2010). X-ray diffraction analysis of three-dimensional residual stress fields reveals origins of thermal fatigue in uncoated and coated steel. Scripta Materialia, 62(10), 774-777. doi:10.1016/j.scriptamat.2010.02.006.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-001A-2622-1
Zusammenfassung
Synchrotron X-ray diffraction analysis of three-dimensional residual stress fields in laser-pulsed uncoated and CrN-coated steels was performed by a combination of two complementary synchrotron approaches. In the uncoated steel, the measurements revealed crater-like tensile stress distributions close to thermal cracks. For the coated samples, a regular Gaussian distribution was observed for steel whereby a cracking occurs in CrN as a consequence of steel buckling. The data also revealed the mechanism by which hard coatings protect steel from thermal fatigue.