85.17 Frank Partial Dislocation in FCC 1. Frank Partial is formed by extracting or inserting part of (111 plane ACBACBACBA ACBA BACBA ACBACBACB BACBACBA BACBCACBA BACBACBA negative Frank positive Frank b=1<111> b=1<11l intrinsic stacking fault extrinsic stacking fault§5.17 Frank Partial Dislocation in FCC 1. Frank Partial is formed by extracting or inserting part of {111} plane. negative Frank positive Frank = 111 3 1 b  intrinsic stacking fault = 111 3 1 b  extrinsic stacking fault