Mathematical modelling and optimization of the thermomechanical treatment process applied to AlZn4.5Mg1Cu alloy

• Published in: IOP conference series. Materials Science and Engineering Vol. 485; no. 1; pp. 12016 - 12021
• Main Authors: Neacsu, M I, Coman, G, Adam, A M
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 27.03.2019
• Subjects: Aluminum base alloys; Dependent variables; Energy consumption; Independent variables; Mechanical properties; Optimization; Process parameters; Thermomechanical treatment
• ISSN: 1757-8981; 1757-899X; 1757-899X
• DOI: 10.1088/1757-899X/485/1/012016

The paper presents the results of the experimental researches as a result of applying the thermo-mechanical treatment for the AlZn4.5Mg1Cu alloy used in the aeronautical industry, in order to optimize the processing parameters. The research is based on a laborious experimental thermomechanical processing program applied to AlZn4.5Mg1Cu aluminium alloy to obtain certain imposed values of the mechanical properties with the lowest possible expense. The objective function in the optimization of the investigated thermomechanical treatment regime is the energy consumption "Q = f (t, τ, ε)" taking into account some restrictions regarding the values of the investigated mechanical properties. The best value for the objective function is obtained by determining values for the independent variables of the thermo mechanical treatment process, for which the conditions for obtaining values imposed on variables dependent on minimum energy consumption Q are met.