Kinetics of microfracture of duralumin in rolling

Conclusions

• 1. The normal logarithmic rule may be used to describe the size distribution of microcracks and intermetallides in deformation regardless of the method of deformation.

• 2. The sizes of microcracks are comparable to the sizes of intermetallides. The position and the amount of the maximums of the intermetallide and microcrack size distribution curves do not depend upon the degree and form of deformation.

• 3. Stabilization of the average arithmetic microcrack length occrus with a deformation of ∈=6–7%.

• 4. With an increase in the degree of deformation in rolling the degree of damage of duralumin increases according to a parabolic rule.