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StrontiumStrontium (Sr) is commonly used as a modifier in castingCasting to refine silicon- and ironIron-based intermetallicsIntermetallics, improving the microstructureMicrostructure in conventional aluminum alloysAluminum alloy. However, its effect in twin roll castingTwin roll casting (TRC)—especially for thin-gauge aluminum foilAluminum foil products—has not been thoroughly investigated. In foil-grade 80118011 alloys, where microstructural uniformityUniformity and mechanical consistency are crucial, the influence of Sr remains unclear. This study explores the effect of Sr additions (0, 30, and 90 ppm) via an Al10Sr master alloyMaster alloy on the microstructureMicrostructure and mechanical propertiesMechanical properties of processed 80118011 aluminumAluminum with twin roll castingTwin roll casting. After homogenizationHomogenization, the materials were cold rolled at different deformation ratios to final foil thickness. IntermetallicIntermetallics morphology, particle distribution, and homogenizationHomogenization rates were examined. Additionally, pinhole density was measured at final gauge. The findings offer new insight into how Sr affects the internal structure and tensile propertiesProperties of aluminum foilsAluminum foil produced via TRC.

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Effect of Strontium on the Twin Roll Casting and Formability of Thin-Gauge Aluminum Foils

  • 会议论文

  • 发表日期：

    2026年

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  • Sadık Kaan Ipek,
  • Angel Ivanov,
  • Venelin Boyadzhiev,
  • Yoanna Yordanova,
  • Gyokhan Nadhzi,
  • Vladimir Dunchev,
  • Angel Anchev

摘要

StrontiumStrontium (Sr) is commonly used as a modifier in castingCasting to refine silicon- and ironIron-based intermetallicsIntermetallics, improving the microstructureMicrostructure in conventional aluminum alloysAluminum alloy. However, its effect in twin roll castingTwin roll casting (TRC)—especially for thin-gauge aluminum foilAluminum foil products—has not been thoroughly investigated. In foil-grade 80118011 alloys, where microstructural uniformityUniformity and mechanical consistency are crucial, the influence of Sr remains unclear. This study explores the effect of Sr additions (0, 30, and 90 ppm) via an Al10Sr master alloyMaster alloy on the microstructureMicrostructure and mechanical propertiesMechanical properties of processed 80118011 aluminumAluminum with twin roll castingTwin roll casting. After homogenizationHomogenization, the materials were cold rolled at different deformation ratios to final foil thickness. IntermetallicIntermetallics morphology, particle distribution, and homogenizationHomogenization rates were examined. Additionally, pinhole density was measured at final gauge. The findings offer new insight into how Sr affects the internal structure and tensile propertiesProperties of aluminum foilsAluminum foil produced via TRC.