Cyclic deformation behaviors of face-centered cubic metals, especially Cu and Ag single crystals, were compared. It was found that the dislocation patterns of gued Cu and Ag single crystals displayed similar features with ladder-like persistent slip bands. The current finding confirms that, after Cu and Ni, Ag was the third pure face-centred cubic metal to form the ladder-like persistent slip band structure. Based upon the two-phase model of the saturation shear stress, a new criterion for persistent slip band formation was established.

Comparison of Dislocation Patterns in Cyclically Deformed FCC Metals. P.Li, Z.F.Zhang, S.X.Li, Z.G.Wang: Scripta Materialia, 2008, 59[7], 730-3