AE response of 316L SS during SSR test under potentiostatic control

Cakir A., Tuncell S., Aydin A.

CORROSION SCIENCE, cilt.41, sa.6, ss.1175-1183, 1999 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41 Sayı: 6
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1016/s0010-938x(98)00178-4
  • Dergi Adı: CORROSION SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1175-1183
  • Anahtar Kelimeler: implant materials, 316L stainless steel, SSRT, acoustic emission, pitting potential, ACOUSTIC-EMISSION, CRACK INITIATION, STAINLESS-STEEL
  • Dokuz Eylül Üniversitesi Adresli: Hayır

Özet

The acoustic emission (AE) response of an implant quality 316L stainless steel (SS) during slow strain rate tensile testing (SSRT) at a constant strain rate of 7.35 x 10(-6) has been measured in Hank's solution with pH 4 at and around the pitting potential, E-pit, of 110 mV(SCE), AE signals were detected by using a piezoelectric sensor. AE Signals recorded in the homogeneous plastic region of the stress-strain curve at potentials greater than E-pit were found to increase in activity and amplitude with increasing anodic potentials beyond pitting. Occurrence of this increase in AE signals took place at progressively decreasing levels of plastic strain as the potential increased beyond pitting. Localization of plastic deformation was suggested to explain the attenuation of the AE signals beyond necking. (C) 1999 Elsevier Science Ltd. All rights reserved.