ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
This paper investigates the subsurface deformation of two types of aluminium alloys withdiffering nature; A2124 (precipitation-hardened) and A5056 (work-hardened), sliding against an M2tool steel slider. With block-on-ring configuration, the wear test was carried out at different loadsranging from 23 - 140N, in a dry sliding condition. Detailed secondary electron microscopy (SEM)performed on the longitudinal cross sections of the worn alloys indicates that the subsurface deformedlayer beneath the worn surfaces is composed of a number of distinct layers like the mechanicallymixed layer (MML), the shear deformed and bulk layers with increased hardness as the surface wasapproached. Deformation below the MML followed the expected behaviour of an exponential decayof strain with depth. In contrast to other studies in the literature, a linear relationship between depth ofdeformation and specific wear rate was not found for both alloys. This was believed to a result of theMML, which occupied a great proportion of the total depth of deformation. The relationship betweenthe characteristics of the MMLs especially on the work hardening as a function of alloy type is alsodiscussed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.483.pdf
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