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Elevated temperature fatigue testing of hardmetals using notched testpieces.

Roebuck, B; Maderud, C*; Morrell, R (2008) Elevated temperature fatigue testing of hardmetals using notched testpieces. Int. J. Refrac. Hard Mat., 26 (1). pp. 19-27.

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Methods of fatigue testing hardmetals at elevated temperatures using notched test-pieces are described. Notches were used to promote deformation initiated in zones representative of the average microstructure rather than from macroscopic defects. By localising the stressed volume of the test-pieces, behaviour more characteristic of the material with less scatter is obtained compared with the use of straight-sided test-pieces. Test have been made in flexure with single-sided notches, and in push-pull using double notches. Controlled atmospheres were used to minimise the effects of oxidation at temperatures in the range 200-800 ºC. It is considered that these new testing methods for hardmetals should provide useful information to rank materials for resistance to fatigue at elevated temperature or during temperature cycling

Item Type: Article
Keywords: Hardmetal fatigue, Notched testpieces, Elevated temperature tests
Subjects: Advanced Materials
Advanced Materials > Metals and Alloys
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4102

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