中国物理B ›› 2009, Vol. 18 ›› Issue (3): 1283-1286.doi: 10.1088/1674-1056/18/3/074
• 8000 CROSSDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
刘兆龙, 胡海云, 范天佑, 邢修三
Liu Zhao-Long(刘兆龙), Hu Hai-Yun(胡海云), Fan Tian-You(范天佑), and Xing Xiu-San(邢修三)
摘要: This paper investigates theoretically the influence of magnetization on fatigue life by using non-equilibrium statistical theory of fatigue fracture for metals. The fatigue microcrack growth rate is obtained from the dynamic equation of microcrack growth, where the influence of magnetization is described by an additional term in the potential energy of microcrack. The statistical value of fatigue life of metal under magnetic field is derived, which is expressed in terms of magnetic field and macrophysical as well as microphysical quantities. The fatigue life of AISI 4140 steel in static magnetic field from this theory is basically consistent with the experimental data.
中图分类号: (Structural failure of materials)