Automatic optimization of localized heat treatment for Al-Si-Mg alloys

International Conference on Materials, Processing and Product Engineering 2015

Ludwig, A.^1 ; Holzmann, T.^1

Simulation and Modelling of Metallurgical Processes, Montanuniversitaet Leoben, Austria^1

关键词: Al-Si-Mg alloy;    Automatic optimization;    Essential problems;    Local heat treatment;    Multiple criteria optimization;    Process parameters;    Process simulations;    Target functions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/119/1/012026/pdf
DOI  :  10.1088/1757-899X/119/1/012026

来源: IOP

【 摘 要 】

Material properties of aluminium alloys can usually be achieved by a heat treatment and quenching procedure. In case that only local strengthening is needed, a local heat treatment and quenching strategy could be an option to the energy intensive, time consuming and costly treatment of the whole part. One of the essential problem using a local strengthening procedure is the lack of knowledge about suitable process parameters. Therefore, a multiple criteria optimization approach with local strengthening as target function was set up, whereby the material constitution was calculated based on the precipitation evolution during local heat treatment and cooling. By automatically varying the exposure time and laser power, a series of process simulations was performed to find adequate process parameters for the sufficient local strengthening of the alloy.