Abstract This study aims to determine optimum casting temperature to achieve maximum wear and corrosion resistance in 304 stainless steel (SS) reinforced A356 matrix bimetal composites, which have been developed for use where conventional ceramic reinforced metal matrix composites have been used. Vacuum-assisted melt infiltration casting technique was used to manufacture bimetal composites at the various casting temperatures from 630 °C to 880 °C. The composite samples were subjected to dry sliding ball-on-disc tests using Al2O3 ball and immersion test in 3.5% NaCl solution for 7–21 days. θ (Fe4Al13) and η (Fe2Al5) phases developed at A356/304 interfaces and thickened with increasing temperature. Abrasion and adhesion as predominant wear mechanisms were observed in worn surface examinations, while pitting and galvanic corrosion occurred in corroded surfaces. The most suitable casting temperature was found to be 730 °C, considering the wear and corrosion properties of produced bimetal composites under certain conditions.

中文翻译：

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真空辅助熔渗铸造法制备的 304 不锈钢增强 A356 铝基双金属复合材料的铸造温度相关磨损和腐蚀行为

摘要 本研究旨在确定最佳铸造温度，以实现 304 不锈钢 (SS) 增强 A356 基双金属复合材料的最大耐磨性和耐腐蚀性，该复合材料已开发用于使用传统陶瓷增强金属基复合材料的地方。真空辅助熔体渗透铸造技术用于在 630°C 至 880°C 的各种铸造温度下制造双金属复合材料。使用 Al2O3 球和在 3.5% NaCl 溶液中浸泡 7-21 天对复合材料样品进行干式滑动球盘试验。θ (Fe4Al13) 和 η (Fe2Al5) 相在 A356/304 界面发展并随着温度升高而增厚。在磨损表面检查中观察到作为主要磨损机制的磨损和粘附，而腐蚀的表面会发生点蚀和电偶腐蚀。考虑到生产的双金属复合材料在某些条件下的磨损和腐蚀性能，发现最合适的铸造温度为 730 °C。