摘要
采用正交实验设计的方法对W6Mo5Cr4V2高速钢循环深冷处理工艺进行了实验研究,分析不同深冷工艺参数对宏观力学性能的影响,使用SEM和TEM观察循环深冷处理断口形貌和微观组织。结果表明,采用循环深冷处理工艺后,随着深冷次数的增加,力学性能明显提高,沿马氏体位错网析出大量超细弥散分布的碳化物数量增多,尺寸和间距减小,与一次长时间深冷处理相比,循环深冷处理效果更好。
The repeated cryogenic treatment technique of W6Mo5Cr4V2 high speed steel was experimentally investigated using orthogonal experiment design, the effect of cryogenic treatment process variables on microstructure and macroscopic mechanical properties were analyzed, the fracture pattern and microstructure after repeated cryogenic treatment were studied. The results showed that after repeated cryogenic treatment, the mechanical properties were significantly improved, and the amount of fine dispersed carbide particles precipitated on martensitic dislocation meshworks was increased and their size and spacing got smaller. The effect of repeated cryogenic treatment is much better than that of single and long time cryogenic treatment.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2008年第6期40-43,共4页
Journal of Materials Engineering
关键词
深冷处理
高速钢
力学性能
微观组织
cryogenic treatment
high speed steel
mechanical property
microstructure
