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Corrosive wear behaviour of various stainless steel alloys and a Stellite 6 weld cladding

Brownlie, F. and Hodgkiess, T. and Pearson, A. and Galloway, A.M. (2016) Corrosive wear behaviour of various stainless steel alloys and a Stellite 6 weld cladding. In: 17th Nordic Symposium on Tribology, 2016-06-14 - 2016-06-17. (In Press)

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This study has comprised an investigation the corrosive wear behaviour of UNS S31600, a low hardness (280Hv) UNS S42000, a high hardness (480Hv) UNS S42000 and a single layer Stellite 6 (UNS R30006) weld cladding on a low alloy carbon steel (UNS G43400). Erosion-corrosion testing was conducted using a submerged jet of 3.5% NaCl aqueous solution with spherical silica sand particles. The sand concentration was 2.4g/l, the velocity of the jet was 18m/s and the testing temperature range was 16°C-27°C. Both normal incidence (90°) and low angle (20°) tests were performed. Mass losses, wear scar depths and a volumetric analysis technique were used to assess the damage in the direct impinged zone (DIZ) and the outer area (OA) of the specimens. For all materials, it was found that mass loss was higher at 20° tests than that of 90°. However, when comparing wear scar depths the opposite trend was found. The results are discussed in terms of comparative material behaviour, the influence of material hardness and the corrosive wear mechanisms in different regions formed during slurry jet impingement.