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Residual stress measurement in AlSi alloys |
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| Authors: | U Reisgen R Sharma S Gach S Olschok J Francis K Bobzin M Oete S Wiesner M Knoch A Schmidt |
| Affiliation: | 1. RWTH Aachen University, Welding and Joining Institute, AACHEN, DEUTSCHLAND;2. University of Manchester, School of Mechanical, Aerospace and Civil Engineering, MANCHESTER, UNITED KINGDOM;3. RWTH Aachen University, Surface Engineering Institute, AACHEN, DEUTSCHLAND |
| Abstract: | In this work, the relaxation of residual stresses inside a sample made of the aluminum alloy AlSi7Mg0.3 after tempering is described. The comparison of stress evaluation by X‐ray diffraction and incremental hole drilling method combined with electronic speckle pattern interferometry strain determination gives the opportunity to evaluate micro stresses together with first order macro stresses. Compressive stresses within the surface of a cold worked sample are relaxed by tempering. The X‐ray diffraction evaluation is supported by the analysis of a stress‐free sample through incremental hole drilling method. |
| Keywords: | Residual stress aluminum alloy X-ray diffraction electronic speckle pattern interferometry incremental hole drilling stress relaxation Eigenspannungen Aluminiumlegierung Rö ntgenbeugung Speckle-Interferometrie Bohrlochmethode |