Nonlinear cracking behavior of 2083 and 2083 ESR stainless steel used in core of injection mold

Year 2024, Volume: 01, 5 - 9, 25.01.2024

Mehmet Yüksel , Tarık Sivri Ahmet Akkaya Fatma Betül Ulusoy

Abstract

In this study, it is aimed to investigating nonlinear surface crack of 2083 stainless steel used in core of injection mold. Strength properties and microstructure of the material directly affect the final product properties and quality. Stress in the structure of steel occur resulting from shaping and cooling during solidification. It is possible for the same stresses to occur in the structure of the steel that is subjected to machining to produce any mold or mold component from a steel whose production operations have been completed. These stresses that may cause dimensional changes during should be removed by annealing at a suitable temperature according to the type of steel used. This paper focused on the non- linear surface cracks which have been observed on the 2083 stainless steel used in core of injection mold. Also 2083 ESR (Electroslag Refining) stainless steel has been used for production injection mold in this study. It has been not ob- served any surface cracks. The same heat treatment with different temperature and time has been performed on the 2083 and 2083 ESR stainless steel. The metallographic analysis, chemical composition and hardness test have been per- formed for comparative analysis. It has been found that the 2083 stainless steel hardness value lower than 2083 ESR stainless steel at the same heat treatment process. It can be concluded that 2083 stainless steel has a coarse grain. Its mean that the heterogeneous microstructure negatively affect the mechanical properties.

Keywords

Surface cracks, 2083 stainless steel, 2083 ESR stainless steel, metallographic analysis, injection mold

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