铅硅合金具有优 良的铸造性能,良好 的耐蚀、耐磨和耐热 性能以及其它好的物 理性能,所以,早已 被公认为最重要的铸 造合金材料之一。 近年来,世界各先进工业国家,对提高铝硅合金力学性能的有力手段——变质处理,作了大量深入的研究,取得了显著的进展。至今这种努力,方兴未艾。 Lead-silicon alloys have long been recognized as one of the most important cast alloy materials due to their excellent casting properties, good corrosion resistance, wear and heat resistance, and other good physical properties. In recent years, all the advanced industrial countries in the world have made a great deal of in-depth studies on the improvement of the mechanical properties of Al-Si alloys, namely, metamorphism treatment. Significant progress has been made. So far this effort is in the ascendant.