Property characterization of Al1050 3D deposits and Numerical study of thermomechanical effects during additive growth associated to Heat Treatments effects analysis on Al1050.

This paper is the result of an experimental study on the evolution of the deposit properties (ultimate strength, Young modulus and porosity) during additive growth of samples taken on three different direction (0°, 90° and 45°) and two different manners (horizontal and vertical) in relation to spray direction, and a numerical study to characterize the dynamics of the development of thermomechanical effects during the high speed collision of Al1050 powders until the complete collapse of the energetic deformation and temperature evolution. Deposit characterization shows the existence of ultimate strength gradient. For samples taken at 0° and 45° in relation to deposit thickness, further the deposit grows lower is ultimate strength value. For other samples, results show different values of ultimate strength which do not allow to establish a law of variation. Young’s modulus values are between 40 and 45 GPa. Porosity evolutions do not allow to establish a generalized law of variation. The numerical results show that the thermomechanical effects due to the deformation gradient during additive growth result in decreased bonding capacity, decrease in thermomechanical heating and gradient of thermal kinetics. To better investigate heat treatments effects, different temperatures and times (HT cycles) has been.