一、前言 六十年代以来,ILZRO(国际铝锌研究组织)等相继研制出ZA12、ZA27和ZA8等锌基合金。由于性能优良,成为很有竞争力的铸造合金系列。它的机械性能,除延伸率和冲击韧性稍差外,完全可以和青铜、铸铁、铸铝相比美,甚至超过这些合金。它们的耐磨损件能,可以和锡青铜ZQSn6 6 3比美。比利时在ZA27中加入晶粒细化剂,制成ZA27C,并取得专利。 I. Introduction Since the 1960s, ILZRO (International Aluminum and Zinc Research Organization) and others have successively developed zinc-based alloys such as ZA12, ZA27 and ZA8. Due to its excellent performance, it becomes a very competitive cast alloy series. Its mechanical properties, in addition to the lesser elongation and impact toughness, can be compared with bronze, cast iron, cast aluminum compared to even more than these alloys. Their wear parts can be comparable to tin bronze ZQSn6 6 3. Belgium ZA27 in adding grain refiner, made ZA27C, and patented.