Development of Machine Learning Models to Evaluate the Toughness of OPH Alloys

0548681 - ÚFM 2022 RIV CH eng J - Journal Article
Khalaj, O. - Ghobadi, M. - Saebnoori, E. - Zarezadeh, A. - Shishesaz, M. - Mašek, B. - Stadler, C. - Svoboda, Jiří
Development of Machine Learning Models to Evaluate the Toughness of OPH Alloys.
Materials. Roč. 14, č. 21 (2021), č. článku 6713. E-ISSN 1996-1944
R&D Projects: GA ČR GX21-02203X
Institutional support: RVO:68081723
Keywords : artificial neural-networks * mechanical-properties * sensitivity-analysis * compressive strength * new-generation * grain-growth * ods steel * regression * prediction * microstructure * Oxide Precipitation-Hardened (OPH) alloys * tensile test * toughness * artificial neural network (ANN) * particle swarm optimization * anfis * Fe-Al-O
OECD category: Thermodynamics
Impact factor: 3.748, year: 2021
Method of publishing: Open access
https://www.mdpi.com/1996-1944/14/21/6713

Oxide Precipitation-Hardened (OPH) alloys are a new generation of Oxide Dispersion-Strengthened (ODS) alloys recently developed by the authors. The mechanical properties of this group of alloys are significantly influenced by the chemical composition and appropriate heat treatment (HT). The main steps in producing OPH alloys consist of mechanical alloying (MA) and consolidation, followed by hot rolling. Toughness was obtained from standard tensile test results for different variants of OPH alloy to understand their mechanical properties. Three machine learning techniques were developed using experimental data to simulate different outcomes. The effectivity of the impact of each parameter on the toughness of OPH alloys is discussed. By using the experimental results performed by the authors, the composition of OPH alloys (Al, Mo, Fe, Cr, Ta, Y, and O), HT conditions, and mechanical alloying (MA) were used to train the models as inputs and toughness was set as the output. The results demonstrated that all three models are suitable for predicting the toughness of OPH alloys, and the models fulfilled all the desired requirements. However, several criteria validated the fact that the adaptive neuro-fuzzy inference systems (ANFIS) model results in better conditions and has a better ability to simulate. The mean square error (MSE) for artificial neural networks (ANN), ANFIS, and support vector regression (SVR) models was 459.22, 0.0418, and 651.68 respectively. After performing the sensitivity analysis (SA) an optimized ANFIS model was achieved with a MSE value of 0.003 and demonstrated that HT temperature is the most significant of these parameters, and this acts as a critical rule in training the data sets./p
Permanent Link: http://hdl.handle.net/11104/0324865