Stacking-fault probabilities and dislocation densities were studied by means of X-ray diffraction and transmission electron microscopy in both filed and compressed bulk specimens of a series of dilute silver alloys. In the filed samples, the observed stacking-fault probabilities increased smoothly from 3 x 10-3 for pure silver to 6.6 x 10-2 for 10.3at%Sn. The values obtained from the compressed bulk specimens were 6 x 10-3 and 9.5 x 10-2, respectively. Direct determinations of the dislocation densities were performed for the bulk specimens (1 x 1011 to 5 x 1011/cm2), leading to computed values of the stacking-fault energy which lay within the range of 2 to 6mJ/m2; with a slight dip for pure silver.

X-Ray Diffraction Measurements of Stacking Faults in Alpha Silver-Tin Alloys. C.J.Newton, A.W.Ruff: Journal of Applied Physics, 1966, 37[10], 3860-8