EXPERIMENTAL EVIDENCE OF SULFUR EFFECT ON THE PLANE AND ON THE EXTRINSIC DISLOCATIONS OF A Σ = 3 GRAIN BOUNDARY IN NICKEL D. BOUCHET, B. AUFRAY et L. PRIESTERJ. Phys. Colloques, 49 C5 (1988) C5-417-C5-422DOI: https://doi.org/10.1051/jphyscol:1988549