Affiliation:
1. Tokuyama College of Technology
2. Kagoshima University
Abstract
In order to investigate the effect of radical nitriding on fatigue strength of spheroidal graphite cast iron FCD400, rotating bending fatigue tests were carried out at room temperature. Fatigue strength was increased by nitriding. Fracture started from microshrinkages or abnormal graphites in the same manner as that of as cast iron. However, fracture mode was different according to the stress level. That is, fracture occurred from specimen surface at high stress levels and it occurred from defects in subsurface at low stress levels. The cause of these results was the hardened layer and the compressive residual stress, which suppressed the initiation of the surface crack.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference5 articles.
1. K. Morino et al.: Japan Soc. Mech. Eng. Int. J., Ser. A, Vol. 41, No. 2 (1998), p.243.
2. N. Kawagoishi et al.: Japan Soc. Mech. Eng., Ser. A, Vol. 67, No. 654 (2001), p.314.
3. K. Morino et al.: Japan Soc. Mech. Eng., Ser. A, Vol. 69, No. 686 (2003), p.1490.
4. Y. Ochi et al.: Int. J. Fatigue, Vol. 23, No. 5 (2001), p.441.
5. K. Fukada: J. Japan Soc. Tech. Plasticity, Vol. 40, No. 464 (1999), p.847.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献