Abstract
This study investigates the fabrication and characterization of carbon steel-stainless steel (CS/SS) composite plates using a liquid-solid composite casting process. A 100 × 100 mm laminated composite plate was produced by infiltrating molten stainless steel into a preheated carbon steel substrate. Microstructural analysis, including electron probe microanalysis (EMPA), revealed a well-bonded interface with a smooth transition layer, confirming effective metallurgical bonding between the two steels. The influence of key process parameters—casting temperature (1550–1650 °C), preheating temperature (300–700 °C), and liquid-solid ratio (3:1–5:1)—on mechanical properties, including hardness, shear strength, and plasticity, was evaluated. Higher temperatures and optimal ratios improved interfacial strength and fracture behavior, transitioning from brittle to ductile. Simulation of the casting process illustrated the temperature distribution and interfacial heat transfer, supporting the experimental results. The study concludes that liquid-solid composite casting is a viable method for producing CS/SS composites with superior interfacial properties, making it a promising approach for applications demanding high performance and durability.
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