Multi-Criteria Decision-Making for Forging 38MnSiVS5 Steel Using TOPSIS Approach
DOI:
https://doi.org/10.37255/jme.v20i4pp143-149Abstract
This study investigates the optimisation of forging parameters for 38MnSiVS5 micro-alloyed steel to optimise mechanical properties, specifically impact strength and hardness. Hot forging experiments were conducted using open-die forging to evaluate the effects of forging temperature, percentage deformation, and cooling rates on these properties. A full factorial design of experiments was employed, and the resulting samples were assessed for impact strength, hardness and microstructural changes. The TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) analysis was applied to identify the optimal forging conditions. The results indicated that forging at 900°C with 60% deformation under normal air cooling provided the best balance between impact strength and hardness. TOPSIS effectively identified this condition as optimal, highlighting its utility in decision-making for material processing.
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