Fatigue and Fatigue Crack Growth Behavior of Tool Steel

被引：0

作者：

Sajuri, Z. ^{[1
]}

Syarif, J. ^{[1
]}

Omar, M. Z. ^{[1
]}

Allafi, M. M. ^{[1
]}

Sudar, M. F. ^{[1
]}

机构：

[1] Univ Kebangsaan Malaysia, Dept Mech & Mat Engn, Bangi 43600, Selangor, Malaysia

来源：

PROCEEDINGS OF THE 1ST WSEAS INTERNATIONAL CONFERENCE ON MATERIALS SCIENCE (MATERIALS'08) | 2008年

关键词：

Fatigue; FCG; Inclusion; Stress intensity factor; Life prediction; Tool steel;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fatigue and fatigue crack growth (FCG) behaviors of tool steel were investigated at room temperature. Fatigue tests were performed under a load control with sinusoidal waveform of stress ratio R=0.1 at a frequency of 10Hz. The fatigue crack was identified nucleated from inclusion presents at specimen surface. The inclusion became the stress raiser and acts as the fatigue fracture origin. The fatigue limit value was observed at 396Mpa. The threshold stress intensity factor range obtained from the fatigue crack growth test was 8.06MPam(1/2). The fatigue crack growth curve was then used to predict the fatigue life based on modified Paris equation. The predicted lives were in good agreement with the experimental results.

引用

页码：53 / 56

页数：4

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