Studying Relationship of Impact Value and Other Metal Material Performance

The essence of the relationship between impact value and other mechanical properties is the sensitivity of sample with or without notch to the notch. Impact test is sensitive to structure defect of material. The test can sensitively reflect the macroscopic defects of material and tiny change of microstructure. Thus impact test can be used as one of the most effective methods to inspect the quality of smelting, heat treatment and the hot working process [1]. For some parts working under special conditions, such as shells and armor plate that bear high impact energy, the impact value is an important resistance index. For some machine parts bearing high energy impact, the impact value can be also used as a structure capacity index to prevent brittle fracture.