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

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

References

1. [1] Daver F., Demirel B., 2012. Experimental study of preform reheat temperature in two-stage injection stretch blow molding. Polymer Engineering and Science, 53, 4, 868-873.
2. [2] Daver F., Demirel B., 2012. A simulation study of the effect of preform cooling time in injection stretch blow molding. Journal of Materials Processing Technology, 212, 11, 2400-2405.
3. [3] Lontos A., Gregoriou A., 2018. A numerical investigation of the effect of preform length for the fabrication of 1.5 Lt PET bottle through the injection stretch blow molding process. MATEC Web of Conferences, 188, 01021
4. [4] Venkateswaran G., Cameron M. R., Jabarin S. A., 1998. Effect of temperature profiles through preform thickness on the properties of re-heat blown PET containers. Advances in Polymer Technology, 17, 3, 237-249.
5. [5] Qiao L. J., Gao K. W., Volinsky A. A., Li X. Y., 2011. Discontinous surface cracks during stress corrosion cracking of stainless steel single crystal. Corrosion Science, 53, 3509-3514.
6. [6] Gaur V., Doquet V., Persent E., Mareau C., Roguet E., Kittel J. 2015. Surface versus internal fatigue crack initiation in steel: influence of mean stress. Internal Journal of Fatigue, 82, 437-448.
7. [7] Louhenkilpi S., 2014. Continuous casting of steel. Treatise on Process Metallurgy, 373-434.
8. [8] Arh B., Podgornik B., Burja J., 2016. Electroslag remelting: a process overview. 2016. Material Technology, 50(6), 971-979.

9. [9] Kharicha A., Schützenhöfer W., Ludwig A., Tanzer R., Wu M., 2008. On the importance of electric currents flowing directly into the mould during and ESR process. 2008. Steel Research International, 79 (8), 632-636.
10. [10] Dojcinovic M., 2011. Comparative cavitation erosion test on steels produced by ESR and AOD refining. Materials Science-Poland, 29 (3), 216-222.
11. [11] Maity S. K., Ballal N. B., Goldhahn G., Kawalla R., 2009. Development of ultrahigh strength low alloy steel through electroslag refining process. ISIJ International, 49, 902-910.
12. [12] Taya M., 1991. Strengthening mechanisms of metal matrix composites. Materials Transactions, 32 (1), 1-19. [13] Ebnesajjad S., 2003. Other molding techniques. Melt Processible Fluoroplastic, 273-315.
13. [14] Gowthaman P. S., Muthukumaran P., Gowthaman J., Arun C. 2017.Review on mechanical characteristics of 304 ctainless steel using SMAW welding. MASK International Journal of Science and Technology Vol 2.
14. [15] Ni Z., Sun Y., Xue F., Zhou J., Bai J., 2011. Evaluation of electroslag remelting in TiC particle reinforced 304 stainless steel. 2011. Material Science and Engineering A, 528 (18), 5664-5669.
15. [16] Qui G., Zhan D., Li C., Yang Y., Jiang Z., Zhang H., 2019. Effects of electroslag remelting process and Y on the inclusions and mechanical properties of the CLAM steel. Nuclear Engineering and Technology.
16. [17] Kim D., Park K. 2015. Effect of electroslag remelting process on low cycle fatigue property of reduced activation ferritic/martensitic steels. New and Renewable Energy, 11(4), 62-70
17. [18] Sawahata A., Tanigawa H., Enomoto M. 2008. Effect of electroslag remelting on inclusion formation and impact property of reduced activation ferritic/martensitic steels. Journal of the Japan Institute of Metals, 72(3), 176-180.
18. [19] Tanigawa W., Sawahata A., Sokolov M. A., Enomoto M., Klueh R. L., Kohyama A. 2007. Effects of inclusions on fracture toughness of reduced activation ferritic/martensitic F82H-IEA steels. Materials Transactions, 48(3), 570-573.
19. [20] Li S., J., Huang Q., Li C., Huang B. 2007. Influence of nonmetal inclusions on mechanical properties of CLAM steel. Materials Transactions, 48, 570-573.
20. [21] Xia Z. X., Zhang C., Lan H., Yang Z. G., Wang P. H., Chen J. M., Xu Z. Y., Li X. W., Li S. 2010. Influence of smelting processes on precipitation behaviors and mechanical properties of flow activation ferrite steels. Materials Science and Engineering: A, 528(2), 657-662.
21. [22] Sakasegawa H., Tanigawa H., Kano S., Abe H. 2015. Material properties of the F82H melted in an electric arc furnace. Fusion Engineering and Design, (98-99), 2068-2071.