What term defines a surface or internal rupture from processing at too low a temperature or excessive working of metal?

The term that best describes a surface or internal rupture resulting from processing at too low a temperature or excessive working of metal is "burst." A burst occurs when the metal does not have the proper ductility and toughness, which can happen if the material is not heated sufficiently during processing or is worked beyond its capacity at low temperatures. The stress exceeds the material's ability to deform, leading to cracks or ruptures.

This phenomenon is particularly relevant in metalworking processes where maintaining the right temperature is crucial for ensuring material properties that prevent failure. A burst can have severe implications in the integrity and safety of components, making it essential for operators to understand the conditions that lead to such defects.