Abstract :
Crack-front markings, with spacings ranging from the millimetre to the nanometre scale, are observed on fracture surfaces produced by a variety of fracture modes, such as fatigue, corrosion-fatigue, hydrogen embrittlement, stress-corrosion cracking, and liquid-metal embrittlement. The characteristics of these markings for metallic materials are described and illustrated, and the processes involved in their formation are discussed.
Keywords :
fractography , Crack-arrest markings , Fracture-mechanisms , Environmental effects , Striations , Progression markings
