Wear and fatigue resistance of mild steel components reinforced by arc welded hard layers

Leitner, Martin; Pichler, Philip; Steinwender, Florian; Guster, Christoph

doi:10.1016/j.surfcoat.2017.09.046

Cited by 14 publications

(10 citation statements)

References 13 publications

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“…Tests with steel friction wheel show that a lower amount of WC within the hardfacing layer does not significantly reduce the wear resistance compared to a higher amount of WC. As every WC within the hardfacing layer may act as kind of defect or imperfection, which can majorly reduce the fatigue strength under cyclic loading [8], it is of utmost importance to obtain an adequate amount and distribution of coarse WC particles. In conclusion, the optimization of the wear and fatigue performance of hard-faced coatings including WC strongly depends on a compromise between the resulting wear and fatigue strength.…”

Section: Discussionmentioning

confidence: 99%

“…For each series 5 kg of sand is needed and refreshed before each series to ensure comparable testing conditions. The constructive divergences from the standard test configuration were conducted because of the comparably enhanced specimen geometry, which is also utilized for fatigue tests under four point bending; see [8,26]. Every test series includes three to four specimens.…”

Section: Wear Testmentioning

confidence: 99%

“…In comparison to martensitic hardfacing layers without carbides, the coatings with coarse WC exhibited the highest wear resistance. On the contrary, it was shown in [8,11,12] that the inclusion of such coarse particles induces a massive decrease of lifetime under cyclic loading. The tungsten carbides act like imperfections and majorly reduce the fatigue strength.…”

Section: Introductionmentioning

confidence: 98%

“…Depending on the application of the coated tools or components, different wear mechanisms lead to various wear surfaces. Furthermore, the parts are often cyclically loaded or exposed to impacts, which additionally decrease the lifetime [8,9]. For such applications, the use of a proper hardfacing layer is necessary, which should contain minor imperfections and no cracks.…”

Section: Introductionmentioning

confidence: 99%

“…(ii) Comparison of wear mechanisms under two different friction wheel compositions for coatings, which are exposed to milling applications and cutting applications of softer materials like wood (iii) The effect of included coarse tungsten carbides in hardfacing layers which is compared to other series with fine WC and series without hard particles in the test configuration with steel wheel (iv) Recommendations for proper application of hardfacing coatings, e.g., used for high-abrasive cutting tools in the wood harvesting industry (see [8]) or milling applications.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Tungsten Carbides on Abrasive Wear of Hardfacing Coatings

Pichler

Leitner

Grün

et al. 2018

Advances in Tribology

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The aim of this study is to investigate the abrasive wear loss as well as the wear mechanisms of hardfacing layers with and without tungsten carbides (WC) included in the matrix in different friction wheel test (FWT) configurations. The FWT setup is varied in regard to the materials of the rotating wheels, whereat steel and rubber materials are utilized to achieve varying wear mechanisms as representative conditions for stone milling as well as low density wood cutting processes. Coatings including fine particles of WC highlight the highest resistance against abrasive wear in rubber wheel testing condition, at which microcutting acts as the dominant effect. In comparison to the hardfacings without WC, the mean material loss majorly decreases by about 75%. On the contrary, the mean material loss of fine WC reinforced coatings increases up to 93% compared to the condition without WC if a steel wheel is utilized as rotating counterpart. Thereby, the coatings with comparably coarse WC reveal the minimum material loss with a decrease over 70% compared to the condition without WC. In conclusion, the inclusion of WC in hardfacing coatings significantly increases the wear resistance. The experimental wear test results highlight the fact that in order to achieve the optimal wear resistance the material characteristics of the hardfacings need to be properly defined considering the predominant wear mechanisms under inservice conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Wear Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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