Characteristics of brittle failure
1. No obvious plastic deformation
2. Fracture characteristics of material embrittlement
3. Brittle fracture characteristics due to defects
4. Low stress at break
Due to defects, especially cracks caused by cracks, the film strength at break is low, generally does not exceed the yield strength, so it does not cause significant plastic deformation. At the same time, such damage can occur under normal operating pressure or pressure from hydrostatic testing.