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Fracture Behaviour of Tungsten Based Alloys Depending on Microstructure and Notch Fabrication Method

Michael Rieth, Andreas Hoffmann

Fusion Science and Technology / Volume 56 / Number 2 / Pages 1018-1022

August 2009

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The fracture behavior of several tungsten based alloys was characterized by standard Charpy tests which have been performed up to 1100°C in vacuum. Due to their fabrication history (powder mixing, pressing, sintering, rolling) all materials had specific micro-structures which led to typical delamination fractures. The influence of notch machining method was also investigated. All results are discussed and assessed with respect to the optimization of future divertor component fabrication.

 
 
 
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