Abstract
In this study, the change in the material's mechanical properties by the static strain ageing process after the pre-deformation applied to AISI 304 austenitic stainless steel was investigated and analysed. The samples were first applied to 5% pre-deformation and then annealed in the oven at 150°C, 250°C, 400°C and 550°C in separate groups for 30 and 60 minutes. The data obtained by performing hardness and tensile tests after static strain ageing were compared, and the interaction between test parameters and these parameters was investigated by performing Pareto analysis. As a result of the study, the highest tensile strength and hardness values were observed in the samples applied static strain ageing for 60 minutes at 150°C. The yield and tensile strengths of the as-received material increased by 10% with the ageing process. It was determined that these values decreased from 400°C. In addition, as a result of Pareto analysis, it was determined that the temperature value is the most critical parameter affecting the results.
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