Stress corrosion studies of 50 Mn18Cr4 austenitic steel implanted with 120
keV N+, 100 keV Cr+, 200 keV and 400 keV Er+ ions were carried out by const
ant strain method in the nitrate solution. Surface composition and depth pr
ofiles of the implanted material were measured by AES sputter etching techn
ique. The results exhibit that nitrogen implantation has no significant aff
ection to the stress corrosion, but the chromium and erbium implantation ha
s prolonged the incubation period of the stress corrosion cracking. (C) 199
9 Kluwer Academic Publishers.