Experimental investigation of engineering materials under repetitive impact with slurry conditions

Brownlie, F. and Hodgkiess, T. and Galloway, A. M. and Pearson, A. (2020) Experimental investigation of engineering materials under repetitive impact with slurry conditions. Tribology letters, 69. 5. ISSN 1023-8883 (https://doi.org/10.1007/s11249-020-01381-y)

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Abstract

In some industrial situations, components are subject to repetitive impact in the presence of a slurry. A novel repetitive impact-with-slurry test rig was developed to evaluate the behaviour of a wide range of engineering materials in such conditions. The test materials could be categorised into five main groups – heat treated steels, stainless steels, chromium cast irons, hardfacing coatings and superalloys. Three-dimensional surface topography was used to quantify the depths and volumes of the produced wear scars. Post-test metallurgical examination was also conducted to further evaluate the wear processes. The wear mechanisms could be split into two main groups of materials; ductile materials were observed to plastically deform and hard/brittle materials demonstrated cracking/spalling mechanisms. Hardened martensitic-type materials exhibited the greatest resistance to repetitive impact wear.

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