Abstract
This study details the effects of stacking fault energy (SFE) in the wear process of several Cu-Al alloys. An X-ray line broadening analysis was made of the wear-induced deformation caused by a reciprocating sapphire slider in a dry argon atmosphere and also of cold-worked filings of the same compositions. The X-ray line profiles were analyzed by both the WarrenAverbach multiple-order method and the Rothman-Cohen method. The resulting stacking fault probabilities, the r.m.s. strains and the effective particle sizes were correlated with the wear rate. The analysis has confirmed several general trends that accompany the Cu-Al alloys with decreasing SFE: increasing r.m.s. strain, decreasing effective particle size, increasing stacking fault probability and increasing wear rate. The deformation substructure associated with cold-worked filings is very similar to that observed in the transfer layer of this series of alloys.
Published Version
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