Investigation of the Effect of Normalization Process on Mechanical Properties and Microstructure of the AISI 4140 Alloy Steel

Yusuf YILMAZ, Ethem KESTI

Abstract: In this study, the effect of the normalization process on the mechanical properties of AISI 4140 alloysteel and the changes in the microstructure of the material were investigated experimentally. For this study, test samples were prepared from AISI 4140 alloysteel. These test samples were collected in 2 groups. While no heat treatment was applied to one of these groups, the other group was only subjected to Normalization. The changes in the mechanical properties and microstructures of the untreated and normalized samples were investigated.

Keywords: Steel, Quenching, Tempering, Tensile Test, Impact Test, Microstructure