abstract:Conchoidal fracture describes the way that brittle materials break when they do not follow any natural planes of separation. Materials that break in this way include flint, quartzite, and other fine-grained or amorphous materials with a composition of pure silicate, such as obsidian and window glass.
The resultsshow thatmaincause of conchoidal fractureformingis that compositionsegregationin solidification grain boundary ofcasting steelreduces the resistanceofcrack propagation.