Heat Treatment Process Study and ANN-GA Based Multi-Response Optimization of C45 Steel Mechanical Properties

Aissa Laouissi; Mohammed Mossaab Blaoui; Hammoudi Abderazek; Mourad Nouioua; Ali Bouchoucha

doi:10.1007/s12540-022-01197-6

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자료유형: 학술저널

저자정보: Aissa Laouissi (Mechanics Research Center (CRM)) Mohammed Mossaab Blaoui (Mechanics Research Center (CRM)) Hammoudi Abderazek (Mechanics Research Center (CRM)) Mourad Nouioua (Mechanics Research Center (CRM)) Ali Bouchoucha (Mentouri Brothers University)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.28 No.12

발행연도: 2022.12

수록면: 3,087 - 3,105 (19page)

DOI: 10.1007/s12540-022-01197-6

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The main purpose of the present investigation is to achieve an optimization of the heat treatment process along with improvingthe mechanical properties of Medium-carbon steel C45 illustrated by the tensile strength (Ts), the hardness (HV) andthe elongation (A). This is performed through varying three necessary factors represented by the quench temperature, theholding time and the cooling medium (air, oil and acid solution). An experimental design illustrated by the performance of27 ( ]] ><![CDATA[33 ) tests was adopted for the planning of the experiments. The Response Surfaces Methodology (RSM),the Neural Networks Approach (ANN) and the Genetic Algorithm (GA) were selected for the modeling and optimization ofthe heat treatment process. Analysis of Variance (ANOVA) results show the cooling medium to have the greatest influenceon the mechanical properties of C45 steel with contributions of 47.34% to 74.3%. The experimental results demonstratethat heating at a temperature of T = 800 ◦C for 30 minutes and then performing a quenching in the acid solution gives largevalues of both Ts and HV, and achieves Ts = 1060MPa and HV = 825.

#Medium-carbon steel · Heat treatment · Tensile strength · Hardness · Optimization · ANN · GA

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