Microstructural parameters of plastically deformed (hand filed) Cu–1Sn–Zn ternary alloys with Zn concentrations of 10 to 24wt% were studied with X-ray diffraction line profile analysis. It was observed that unlike the binary alloy system, the stacking fault probability calculated from peak shift analysis was almost constant with increase in zinc concentration from 10 to 20wt% and thereafter increased with the increase of zinc concentration. Stacking fault energy was calculated by modifying the expression given by Reed and Schramm and showed a significant difference with that from earlier work by Ghosh and Sen Gupta. Present results were closer to electron microscope studies. It was found that dislocation density was much higher (about 1015/m2) and showed compositional dependence. Dislocation type was found to be a combination of equal populations of screw and edge dislocations. It was noticed from dislocation arrangement parameters that the dislocations were greatly correlated in nature for lower Zn concentration and less correlated at higher Zn concentration.

Study of Deformation Stacking Faults and Dislocation Microstructures in Cu–1Sn–Zn Alloys. S.N.Dey, P.Chatterjee, S.P.Sen Gupta: Acta Materialia, 2005, 53[17], 4635-42