Wear mechanisms and transitions in advanced railway materials - a twin disc benchmark of Mn13, CrB1400 and R400HT

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2024-12-24 DOI:10.1016/j.wear.2024.205713

Sebastian Gapp , Georg Schnalzger , Jürgen Maierhofer , Werner Daves , Kazim Yildirimli , Roger Lewis , Uwe Oßberger , Christian Bucher , Thomas Titze

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引用次数: 0

Abstract

Twin disc tests are performed to determine the wear behaviour of three advanced crossing materials. In particular, the austenitic Hadfield steel Mn13, the ultrafine-pearlitic R400HT and the chromium bainitic CrB1400 steels are benchmarked. The investigated crossing materials are combined with the standard wheel material ER7. The tests are performed under two different contact pressures, 1 400 and 1 800 MPa, respectively. Dry conditions and a slip of 0.5% are used. The parameters evaluated are: wear rates, wear debris, plastic deformation, microstructural changes, friction coefficient and material hardness. R400HT is identified as exhibiting the highest wear resistance, although CrB1400 shows comparable results. Mn13 exhibits the highest wear rates. Three primary reasons for the elevated wear rates of Mn13 are identified. These include a significantly lower initial hardness, a distinct hardening mechanism in conjunction with a high work-hardening potential and a different wear mechanism that shows a high dependence on the applied contact pressure. The different wear mechanism is expected to be the main driver for the high wear rates.

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.