A series of α-brasses was investigated with regard to the effect of stacking-fault energy upon the formation of dislocation configurations in fcc metals during shock deformation. The sub-structures observed using transmission electron microscopy were similar to those previously reported for α-brasses deformed in simple tension. The results indicated that shock-deformed metals of relatively high stacking-fault energy exhibited a cell structure. Those of low stacking-fault energy were found to contain dislocations in co-planar groups, with lengthy segments confined to certain (111) planes. A survey of previous work, together with the present results, showed that the transition between the two types of dislocation configuration occurred at stacking-fault energies of between about 25 and 36mJ/m2.

Influence of Stacking Fault Energy on Dislocation Configurations in Shock-Deformed Metals. F.I.Grace, M.C.Inman: Metallography, 1970, 3[1], 89-98