Application of Metallographic Analysis Techniques in Nuclear Components Failure Analysis

Failure analysis of nuclear mechanical components is an important means to deal with the in-service defects and guarantee safety and operating functions,in which metallographic analysis techniques including optical microscope,microhardness,metallurgic replica technique,scanning electron microscope,transmission electron miscroscope and electron probe have been widely applied.Mechanism of these techniques in combination with the application in nuclear cases study has been discussed in this paper.