Long-Term Immersion Testing of Alloy 22 and Titanium Grace 7 Double U-bend Specimens.

Evans, K. J. ; Stuart, M. L. ; Hailey, P. D. ; Rebak, R. B.

Technical Information Center Oak Ridge Tennessee

关键词: Titanium;    Nickel based alloys;    Immersion;    Testing;    Ground water;   

RP-ID  :  DE2007913551

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

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 degrees 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.