The Effect of Casting Revert-Virgin Alloy with Different Portions on the Microstructure and Mechanical Properties of 1.4930 Heat-Resistant Stainless-Steel Alloy in Investment Casting Process

Reverting or using casted materials such as rejected parts or runners and for cast feeds is prohibited for alloys used in the aerospace and power plant industries. The mechanical and physical properties of the alloy are typically impacted by the emergence of unfavorable particles and inclusions in the melt during casting as a result of the addition of revert material. This study is based on reusing alloys in the investment casting process and the effect of the portion of virgin and revert alloys on the microstructure and mechanical properties of the final product. The heat-resistant stainless-steel alloy 1.4930 (GX 14CrCoMo 1310) was cast using the investment casting technique in this study. Revert alloy was obtained from one-time casted steel. At each stage of casting, revert and virgin alloys were cleaned before casting and after the casting process, samples were subjected to testing of their mechanical properties and microscopic inspections. The obtained results showed that despite enhancing the mechanical characteristics (YS approximately 13% and UTS about 4%), the quantity of produced inclusions greatly reduces the formability (between 11 and 22% in the amount of elongation). Throughout each stage of melting, casting, and solidification, the particles also undergo change and transformation.