Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 29, Issue 1, Pages 12-28Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0927-0256(03)00092-2
Keywords
artificial neural network; precipitation hardening; mechanical properties; processing; maraging steels
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An artificial neural network (ANN) model is developed for the analysis and simulation of the correlation between the properties of maraging steels and composition, processing and working conditions. The input parameters of the model consist of alloy composition, processing parameters (including cold deformation degree, ageing temperature, and. ageing time), and working temperature. The outputs of the ANN model include property parameters namely ultimate tensile strength, yield strength, elongation, reduction in area, hardness, notched tensile strength, Charpy impact energy, fracture toughness, and martensitic transformation start temperature. Good performance of the ANN model is achieved. The model can be used to calculate properties of maraging steels as functions of alloy composition, processing parameters, and working condition. The combined influence of Co and Mo on the properties of maraging steels is simulated using the model. The results are in agreement with experimental data. Explanation of the calculated results from the metallurgical point of view is attempted. The model can be used as a guide for further alloy development. (C) 2003 Elsevier B.V. All rights reserved.
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