|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Fatigue in Materials: Fundamentals, Multiscale Modeling and Prevention
||GG-15: Separating the Influence Factors Resulting from Production Processes on the Fatigue Strength in the HCF/VHCF Regime
||Martina Zimmermann, Martin Cremer, Davi Felipe Pessoa, Hans-Jürgen Christ
|On-Site Speaker (Planned)
With increasing number of loading cycles the diversity of local notch effects resulting from production processes causes an increasing scatter of experimental fatigue results. Hence, test and evaluation strategies allowing a separate evaluation of the process related changes in microstructure, defect population, surface quality and macroscopic geometry are essential for a reliable fatigue life prediction of safety relevant components. Focusing on the two production processes welding and laser cutting, a separate evaluation of macroscopic and microscopic notch effects as well as the microstructural morphology before and after processing on the HCF/VHCF behavior of metallic materials will be discussed. A butt welded joint of a precipitation hardening aluminum alloy and laser cut sheets of a metastable austenitic steel serve as basis to identify the dominating effects on the fatigue behavior of each processing technology.
||Planned: Publication Outside of TMS (Indicate publication title and publisher if known.)