钢的回火时间-温度-硬度动力学关系Time-Temperature-Hardness Kinetics Relation of Tempering Steels
张占平,齐育红,DELAGNES D,BERNHART G
摘要(Abstract):
研究了 5 5NiCrMoV7钢在 10 0°C~ 70 0°C、90s~ 6 6 5h之间回火的组织和力学性能变化。以钢的淬、回火和退火硬度作为基本参数 ,定义了回火度的概念 ,提出了具有Johnson Mehl Avrami关系式形式的、适用于无二次硬化钢的回火 (时效 )动力学规律。由该规律出发可以推出Hollomon Jaffe回火参数与时间、温度和硬度的关系式。
关键词(KeyWords): 工具钢;回火;动力学;回火度
基金项目(Foundation):
作者(Author): 张占平,齐育红,DELAGNES D,BERNHART G
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