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MM: Fachverband Metall- und Materialphysik

MM 12: Topical Session (Symposium MM): Fundamentals of Fracture

MM 12.1: Topical Talk

Monday, March 12, 2018, 15:45–16:15, TC 006

Microscale Fracture Testing: State of the Art and Future Challenges — •David Armstrong — University of Oxford, Oxford, UK

Over the last 15 years there has been a large increase in the use of microscale fracture tests. This is linked to the increase in availability of focused ion beam systems allowing the manufacture of increasingly complex test geometries and improvements in nanoindetation equipment allowing the testing of smaller and more complex structures. In addition the development of high temperature nanoindentation systems allows for microscale studies of the effects of temperature on fracture behaviour.

This paper will give an overview of the current state of the art in the area of microscale fracture. Specific examples that will be used to demonstrate this will include microscale measurements brittle to ductile transition in tungsten alloys and a comparison of micro and microscale fracture of oxidised grain boundaries in nickel alloys.

Finally some future directions will be suggested for research and to stimulate discussion.

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