一、前言 蠕虫状石墨铸铁是一种介于片状石墨铸铁和球状石墨铸铁之间的新型结构材料。近年来国内对蠕墨铸铁的研究和生产愈来愈引起更多的重视。这种材料在国外早已发现,1948年英国Morrogh博士在用铈处理球墨铸铁的研究过程中获得一种不完全球状的石墨,当时他称之为“准片状石墨”(quasi—flake graphite)。后来Millis等人用镁进行球化处理时,由于镁量不足也 I. Introduction The worm-shaped graphite cast iron is a new type of structural material between flake graphite cast iron and spherical graphite cast iron. In recent years, domestic research and production of vermicular graphite iron has drawn more and more attention. This material has long been discovered abroad and in 1948 Dr. Morrogh in the UK obtained an incomplete globular graphite during the study of the ductile iron treated with cerium, what he called “quasi-flake graphite” at the time. Later, when Millis et al. Used magnesium for spheroidization, the amount of magnesium was insufficient