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fracture can occur in a wide variety of materials, including steel alloys, copper alloys, aluminum alloys, and ceramics. In metals with multiple lattice orientations, when one lattice ends and another begins, the fracture changes direction to follow the new grain. This results in a fairly jagged looking fracture with straight edges of the grain and a shiny surface may be seen. In ceramics, intergranular fractures propagate through grain boundaries, producing smooth bumpy surfaces where grains can be

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