Wear performance of aluminium alloy composites containing unidirectionally-oriented silicon carbide coated boron fibres


Sahin Y., Murphy S.

WEAR, vol.197, pp.248-254, 1996 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 197
  • Publication Date: 1996
  • Doi Number: 10.1016/0043-1648(96)06959-1
  • Title of Journal : WEAR
  • Page Numbers: pp.248-254

Abstract

The friction and wear behaviour of continuous, silicon carbide coated, unidirectional boron fibre reinforced aluminium alloy composites produced by a metal infiltration technique was investigated. A pin-on-disc type apparatus was employed for determining the sliding wear rate and the coefficient of friction in a direction normal to the fibre axis. The effects of applied load and volume fraction of fibre on the dry sliding behaviour were evaluated. The wear rates of the composites were considerably less than that of the aluminium matrix alloy at all applied loads. However the friction coefficients of the composites were found to be higher than that of the matrix alloy. Scanning electron microscopy of the worn surfaces revealed that fibre microfracture was the predominant mechanism of wear of the composites, while ploughing and delamination were the operative wear mechanisms of the aluminium alloy matrix.