一、概述珠光体球墨铸铁在常温下是一种具有优良机械性能的材料,它具有较高的强度和一定的韧性、塑性,能满足现代机器制造业的需要,目前在国内外已经广泛地投入使用,如机车车辆上应用的曲轴、汽缸套、汽室套、涨圈等.然而这种材料在高温下所具有的特性,目前我们尚掌握不够,在国内外文献的记载中亦 I. Overview Pearlite ductile iron at room temperature is a kind of excellent mechanical properties of the material, which has high strength and a certain degree of toughness, plasticity, to meet the needs of the modern machinery manufacturing industry, at home and abroad have been widely invested Such as crankshafts, cylinder liners, steam chamber covers, bulldozers, etc., which are used on rolling stock, however, the properties of this material at high temperature are not enough for us at present. In the records of the domestic and foreign literatures