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Wear between wheel and rail:A pin-on-disc study of environmental conditions and iron oxides
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.). (System- Och Komponentdesign)ORCID iD: 0000-0001-7560-6232
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.). Zhejiang University, China. (System- Och Komponentdesign)
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.). (System- Och Komponentdesign)ORCID iD: 0000-0003-2489-0688
2015 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 328-329, 277-285 p.Article in journal (Refereed) Published
Abstract [en]

Railways operate in an open environment where temperature, humidity, and the oxidation conditions are subjected to change. An experimental investigation used a pin-on-disc machine to examine the influence of environmental conditions and iron oxides on the wear performance of the wheel-rail contact. The wear mechanisms were analyzed using scanning electron microscopy and found to be highly dependent on the environmental conditions. On clean contacts, adhesive wear is predominant under low-moisture conditions, becoming more serious with decreasing temperature. With high moisture and at room temperature (i.e., 20. °C and 10. °C) oxide flakes would self-produce and protect the pins from severe wear, as oxidative wear is the main wear mechanism. Samples experienced a transformation of the wear mechanism from adhesive to oxidative with increasing humidity on clean contacts. Complex three-body wear in abrasion form has been determined to dominate oxidized contacts. Under dry conditions, pins underwent severe wear appearing as delamination at 20. °C and crushed wear debris at 3. °C. Raising the moisture level helps the pins to avoid severe wear.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 328-329, 277-285 p.
Keyword [en]
Corrosion-wear, Electron microscopy, Rail-wheel tribology, Sliding wear, Steel, Three-body abrasion
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-166984DOI: 10.1016/j.wear.2015.02.057ISI: 000355360100030Scopus ID: 2-s2.0-84924675163OAI: oai:DiVA.org:kth-166984DiVA: diva2:814746
Note

QC 20150622

Available from: 2015-05-28 Created: 2015-05-21 Last updated: 2017-12-04Bibliographically approved

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Lyu, YezheOlofsson, Ulf

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