No abstract

No abstract

Fractographical examinations present a good relationship between frac ture surface topography and basic rupture mechanism. Fracture consists of crack formation (crack nucleation) and crack growth (crack propagation). Many parametres such as type of loading, sensitivity of materials to crack play an important role on failure. Fracture in engineering alloys can occur by a transgranular (through the grains) or an intergranular (along the grain boundaries) fracture path. Scanning Electron Microscopy (SEM) is used in fractographical examinations presented in this study, due to its high resolution. In general SEM examinations are an important part of failure analysis.In this study newly developed boron added armor steel has been rolled to form sheet product. Heat treatment series including austenitization, quenching and then tempering have been applied on boron added armor steel respectively. The effects of formed microstructures on mechanical properties have been studied extensively. Furthermore failure mechanism has been determined through fractografical examinations by using SEM . Failure analysis and type of fracture provide also a good approach to understand the ballistic behaviour of armor steel. When the material is exposed to any kind of impact loading as performed by kinetic penetrator etc., it is obvious that the characteri stic of failure will give information about its ballistic performance.

No abstract

No abstract