Tensile instability in face-centred cubic materials

A study of plastic instability in tension, which occurs well before the Considère criterion is met, is reported for face-centred cubic single crystals. The observations show that the instability is caused by a sudden effective decrease in work hardening resulting from the operation of a new dominant shear system. The change of dominant shear system is always accompanied by strain localization phenomena. In general, the rate of work hardening at …