The influence of silicon and other alloying additions on the wear characteristics of hypereutectic aluminum-silicon alloys.

Book

Abstract

  • The wear characteristics of experimental hypereutectic aluminium/silicon alloys of various compositions were investigated. Alloys containing from 17 to 26% silicon were produced to determine the influence of variations in the volume fraction of primary silicon. Various alloying additions were then used to produce a range of matrix hardnesses, while holding the silicon content constant. Testing was carried out to determine the influence of matrix strength on the wear characteristics. Wear rates were determined for unidirectional sliding contact under unlubricated conditions, using a pin on disc testing arrangement. Results indicated that wear rates decreased significantly as the volume fraction of primary silicon was increased. A transition from mild to severe wear was found to occur as the applied load during testing was increased. The load at which this transition occurred was considerably increased as the volume fraction of primary silicon was increased. Variations in matrix hardness were found to have a less significant influence on wear characteristics than the volume fraction of primary silicon. (A)
  • Authors

    International Standard Book Number (isbn) 10

  • 0 444 99552 8
  • Volume

  • III, Amsterdam, The Netherlands, Elsevier Sci. Publishers B.V., 1985, Section 1-2, 5p.