贝氏体-马氏体抗磨球墨铸铁热处理工艺的试验研究  

Study on the Heat-treatment Process of the Wear-resistant Ductile Iron with Bainite and Martensite

作　　者：孙玉福[1] 

机构地区：[1]郑州大学材料科学与工程系,河南郑州450002

出　　处：《热加工工艺》2001年第6期18-20,共3页Hot Working Technology

摘　　要：试验研究了淬火介质、奥氏体化温度和回火温度对贝氏体 -马氏体抗磨球墨铸铁组织与性能的影响。选择合理的热处理工艺 ,获得了优良的性能 ,洛氏硬度达 5 0～ 5 5 HRC,冲击韧度为 8～ 15 J/ cm2 ,80 mm磨球冲击疲劳寿命(落球试验的跌落次数 )达The influence of midia quench?austenitizing temperature and tempering temperature on the structure and properties of the wear resistant ductile iron with bainite and martensite was studied through the experiments.The appropriate heat treatment process was chosen and the excellent properties were obtained.The rockwell hardness:50～55 HRC,the impact toughness a K :8～15J/cm 2.And the impact fatigue life of φ 80 mm mill ball reached 20000 times(dropping times of dropping ballexperiment).

关 键 词：热处理工艺 抗磨球墨铸铁 贝氏体 马氏体 

分 类 号：TG164.2[金属学及工艺—热处理]