Acoustic emission monitoring of slow strain rate tensile tests of 304L stainless steel in supercritical water environment

作者：Mathis Kristian^*; Prchal Dusan; Novotny Radek; Hahner Peter

来源：Corrosion Science, 2011, 53(1): 59-63.

DOI：10.1016/j.corsci.2010.09.006

• Stainless steel
• Stress corrosion

An experimental set-up has been developed to perform slow strain rate tensile (SSRT) tests on tubular 304L stainless steel (SS) specimens in supercritical water (SCW) environment (550 degrees C 250 bar) The supercritical water is circulated inside an internally pressurized tubular specimen mounted into a universal mechanical test rig and heated by a single loop resistance heating furnace The set-up enables in situ monitoring of acoustic emission and electrochemical potential during the SSRT test The SCW environment is found to significantly influence the mechanical performance of the material as a result of corrosion processes A correlation between acoustic emission response and change of electrochemical potential is revealed The findings are compared with preliminary resu

• 出版日期2011-1