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本文评价了铝、铁和镍等合金元素对铝青铜合金C95400的机械性能与显微组织的影响。研究发现,该合金的荐用标称成分并非是最佳成分,达不到所规定的最低性能。铝含量对合金性能,尤其延性具有最重要的影响。发现影响合金性能的另一参数是落砂时间。对于低铝含量铸件,延长落砂时间会降低铸件的延性。试验表明,如要保持机械性能不变,铝含量应低于10.6%,铁含量则应保持在4%。合金中镍含量容许等于或低于0.25%而不致使性能下降。
This paper evaluates the effect of alloying elements such as aluminum, iron and nickel on the mechanical properties and microstructure of aluminum bronze alloy C95400. The study found that the recommended nominal composition of the alloy is not the best composition, not up to the prescribed minimum performance. Aluminum content has the most important effect on alloy properties, especially ductility. Another parameter that has been found to affect the properties of the alloy is the falling time. For low-aluminum castings, extending the casting time will reduce the ductility of castings. Tests show that, to maintain the same mechanical properties, the aluminum content should be less than 10.6%, while the iron content should be maintained at 4%. The nickel content of the alloy is allowed to be equal to or lower than 0.25% without deterioration in performance.