Precipitation Kinetics of AA6082: An Experimental and Numerical Investigation

Abstract:

The development of simulation tools for bridging different scales are essential for understanding complex joining processes. For precipitation hardening, the Kampmann-Wagner numerical model (KWN) is an important method to account for non-isothermal second phase precipitation. This model allows to describe nucleation, growth and coarsening of precipitation hardened aluminum alloys based on a size distribution for every phase which produces precipitations. In particular, this work investigates the performance of a KWN model by [1-3] for Al-Mg-Si-alloys. The model is compared against experimental data from isothermal heat treatments taken partially from [2]. Additionally, the model is used for investigation of the precipitation kinetics for a laser beam welding process, illustrating the time-dependent development of the different parameters related to the precipitation kinetics and the resulting yield strength.

• Periodical: Materials Science Forum (Volume 941)
• Pages: 1411-1417
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.1411
• Online since: December 2018
• Authors: Jan Herrnring*, Nikolai Kashaev, Benjamin Klusemann
• Keywords: AA6082, Heat Treatment, Kampmann-Wagner Numerical Model, Laser Beam Welding (LBW), Precipitation Kinetics, Simulation

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