Effect of Hot Deformation on Dynamics of Thermal Fatigue Crack′s Propagation in high C-Cr Wear Resistant Cast Steel

被引：0

作者：

刘建华

张瑞军

机构：

[1] StateKeyLaboratoryofMetastableMaterialsScienceandTechnology,YanshanUniversity

来源：

Journal of Rare Earths | 2006年 / S2期

关键词：

hot deformation; high C-Cr wear resistant cast steel; thermal fatigue crack; rare earths;

D O I：

暂无

中图分类号：

TG111.8 [金属的蠕变和疲劳];

学科分类号：

0702 ; 070205 ;

摘要：

The effect of hot deformation on dynamics of thermal fatigue crack′s propagation in high C-Cr wear resistant cast steel was studied. The results show that thermal fatigue crack′s propagation in high C-Cr wear resistant cast steel is keeping with L=bNa(a<1), the speed of thermal fatigue crack′s propagation reduces, and the activation energy of crack′s propagation increases with the rising of hot deformation quantity, when hot deformation quantity is less than 40%. All these changes are due to the changes of carbide morphology and precipitation of granular carbides.

引用

页码：300 / 302

页数：3

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