1 Heterogeneous local straining behavior under monotonic and cyclic loadings in a friction stir welded aluminum alloy Keywords Friction stir welding, Digital image correlation (DIC), Fatigue, Local strain, Crack initiation Yasuko Besel a)* , Michael Besel a), 1) , Eric Dietrich a) , Janine Wischek a) , Ulises Alfaro Mercado a) , Toshifumi Kakiuchi b) , Yoshihiko Uematsu b) a) German Aerospace Center (DLR), Institute of Materials Research, Linder Hoehe, 51147 Cologne, Germany *[email protected], +49-(0)2203-601-4078 b) Gifu University, Faculty of Engineering, Department of Mechanical Engineering, 1-1 Yanagido, Gifu 501-1193, Japan 1) present, Otto Fuchs KG Abstract Local strain evolution under monotonic and fatigue loadings was investigated in a friction stir welded (FSWed) Al-Mg-Sc alloy. The microstructure of the weld exhibited strong heterogeneity. Digital image correlation (DIC) technique was employed to evaluate local straining behavior in the weld seam in tensile testing. Onset of initial yielding was found locally near regions of lowest hardness. However, the local straining development didn’t take place homogeneously in the stir zone (SZ) of the weld and constraints by surrounding microstructure affected further straining behavior in the weld. Local cyclic straining
Heterogeneous local straining behavior under monotonic and cyclic loadings in a friction stir welded aluminum alloy
Jun 17, 2023
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Related Documents
