Failure Analysis and Fatigue Investigation on Titanium Tubes in a Condenser
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This paper presents an analysis of condenser titanium tube leakage in nuclear power plants. Chemical compositions, mechanical properties, metallographic structures, and microscopic morphologies were analyzed. The results show that the titanium tube leakage was mainly caused by fatigue failure on the basis of the fatigue fracture features. Fatigue tests had been carried out in both air and steam environments, and the fatigue resistance of titanium tubes decreased distinctly in a steam environment. Based on the investigations, proper recommendations have been proposed to enhance the prevention of fatigue fracture of titanium tubes in condensers.
KeywordsTitanium tube Failure analysis Fatigue Prevention
This research was financially supported by the Doctoral Research Assistant Foundation of Xi′an Jiaotong University.
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