An energy approach to predict fatigue crack propagation in metals and alloys

摘要: Mechanical deformation of a solid during fatigue cycling is broadly defined phase transformation, because defects are produced that increase its internal energy. Change in the defect structure, crack initiation and growth also examples transformations. Many concepts transformation theory applicable to nucleation propagation. Phase was applied penny-shaped interconnects previous research. The physical meaning materials previously studied by using energy considerations. This paper extended treatment predict propagation rate metals alloys. predicted compared with experimental data for different steels aluminum alloys demonstrate prediction agrees reasonably well results. under cyclic stress corresponding solder intermetallics.