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Title: Long-Term Immersion Testing of Alloy 22 and Titanium Grade 7 Double U-bend Specimens

Double U-bend specimens of Alloy 22 (N06022) and Titanium Grade 7 (R52400) were exposed to a naturally aerated concentrated Basic Saturated Water (BSW) electrolyte at 105 C for over six years. Different type of discoloration of the Ti Gr 7 and Alloy 22 specimens was observed. General Corrosion was minimal and not distinguishable under a scanning electron microscope. None of the tested specimens suffered environmentally assisted cracking (EAC) or localized corrosion under the tested conditions. The specimens retained their residual stress after the long environmental exposure.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
913551
Report Number(s):
UCRL-PROC-228000
TRN: US200802%%870
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: 2007 ASME Pressure Vessels and Piping Division Conference, San Antonio, TX, United States, Jul 22 - Jul 26, 2007
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; CORROSION; ELECTROLYTES; ELECTRON MICROSCOPES; ENVIRONMENTAL EXPOSURE; PRESSURE VESSELS; TESTING; TITANIUM; WATER