In situ crack growth observation and fracture toughness measurement of hydrogen charged Zircaloy-4 |
| |
Authors: | G. Bertolino,G. Meyer,J. Perez Ipiñ a |
| |
Affiliation: | a Centro Atómico Bariloche, CNEA, 8400 Bariloche, Argentina b CONICET, National Council of Scientific and Technological Research, Argentina c Universidad Nacional del Comahue, 8300 Neuquén, Argentina |
| |
Abstract: | The effect of hydrogen on the fracture behaviour of a Zircaloy-4 alloy was analysed performing simultaneous fracture mechanics tests of small SE(B) specimens and in situ observation of crack initiation and propagation inside the chamber of a scanning electron microscope. Load and displacement were continuously measured and JIC, J-R curves and CTOD determinations were obtained. Detailed images of the zone close to the crack tip were taken and the resistance to crack growth was correlated with hydrogen content and hydride morphology. The size and orientation of hydride precipitates showed an important influence on the fracture process. A good agreement with results obtained using standard CT specimens was met. |
| |
Keywords: | C0500 F0600 H0400 |
本文献已被 ScienceDirect 等数据库收录! |
|