一、前言随着对高速工具钢组织结构及性能研究的不断深入,高速工具钢铸态组织的研究工作已引起了广大冶金工作者的关注和浓厚兴趣。1976年石川英次郎在《铁钢》四期上发表了一幅高速钢共晶碳化物的电镜照片,其后,又有其他学者发表了他们的研究工作;我国重庆大学丁培道教授及其同事,发 I. INTRODUCTION With the research on the structure and properties of high-speed tool steels, the research on the as-cast structure of high-speed tool steels has aroused the interest and interest of metallurgists. In 1976, Hideki Ishikawa published an electron micrograph of a high-speed steel eutectic carbide in the fourth phase of “Iron and Steel”. Later, other scholars published their research work. Professor Ding Peidao and colleagues from Chongqing University of China, hair