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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Mechanisms of the embrittelement and the effect of ageing on the brittle-fracture properties of the Eurofer ´97 steel
 Stratil, Luděk ; Hadraba, Hynek ; Dlouhý, Ivo
The embrittlement of metal alloys is known phenomenon described as a loss of toughness. This effect is usually caused by segregation of the undesirable traps elements on the grain boundaries or unsuitable precipitation. The iron-based alloys, especially alloyed by chromium, are very susceptible to the embrittlement. The most common mechanisms of the embrittlement of these steels are briefly described in this contribution. The Eurofer´97 is a advanced steel developed for application in nuclear industry mainly alloyed by chromium and tungsten. The susceptibility to the embrittlement of the steel was studied by long-term isothermal ageing. Detailed microstructure studies were carried out in as received and aged state, the fracture behaviour was assessed by instrumented impact tester. The applied ageing caused slight microstructure changes including carbide and subgrain coarsening and slight shift of the impact transition curve.
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