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The effect of temperature and sliding distance on coated (CrN, TiAlN) and uncoated nitrided hot-work tool steels against an aluminium alloyKalin, Mitjan ; Jerina, JureAdhesion and, in particular, the transfer of aluminium alloys to the bearing surface of a die are two of the main reasons for tool failure and the poor surface quality of products, especially at ... elevated temperatures. The present work was focused on the EN-AW6060 aluminium alloyʼs transfer initiation and the evolution to an AISI H13 hot-work tool steel, as well as CrN and TiAlN coatings in a cross-cylinder, single-pass, dry-sliding contact at room (20 °C) and elevated temperatures (300-500 °C). The contact was investigated in terms of the surface area and volume of the transferred aluminium alloy to the tool surface, the topography of the wear trace and the corresponding change in the coefficient of friction. The results show a strong dependence of the tribological properties of the investigated materials on the temperature and only a limited dependence on the sliding distance, especially for the TiAlN coating. At room temperature the lowest coefficient of friction and the smallest amount of material transfer were measured for the TiAlN coating. At higher temperatures both the CrN and TiAlN coatings showed similar friction values and amounts of transferred aluminium alloy, while the nitrided hot-work tool steel exhibited an inferior tribological performance.Source: 20th International Conference on Wear Materials [Elektronski vir] (Vol. 330/331, May-Jun. 2015, str. 371-379)Type of material - conference contributionPublish date - 2015Language - englishCOBISS.SI-ID - 14029595
Author
Kalin, Mitjan |
Jerina, Jure
Topics
hot-work tool steels |
aluminium alloys |
material transfer |
TiAlN coating |
CrN coating |
elevated temperatures |
aluminijeve zlitine |
prevleke |
prenos materialov |
orodna jekla
source: 20th International Conference on Wear Materials [Elektronski vir] (Vol. 330/331, May-Jun. 2015, str. 371-379)
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Kalin, Mitjan | 14556 |
Jerina, Jure | 33243 |
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