Score Resistance of SAE781 (Al-Si-Cd) Automotive Journal Bearing Alloy—A Metallographic Analysis

The excellent score resistance of the journal bearing alloy SAE 781 (Al-4Si-1Cd) is attributed to a thin, 5 μm, layer of the Si phase on the surface. The Si particles have typical cross-sectional areas in the range of 10 - 20 μm² and show a concentration enrichment of greater than 15 times over that...

Full description

Saved in:
Bibliographic Details
Published in:SAE transactions 1986-01, Vol.95 (1), p.378-384
Main Authors: Gallerneault, M., Fulton, C., Weitz, G.
Format: Article
Language:English
Subjects:
Applied sciences
Bearings, bushings, rolling bearings
Drives
Exact sciences and technology
Mechanical engineering. Machine design
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The excellent score resistance of the journal bearing alloy SAE 781 (Al-4Si-1Cd) is attributed to a thin, 5 μm, layer of the Si phase on the surface. The Si particles have typical cross-sectional areas in the range of 10 - 20 μm² and show a concentration enrichment of greater than 15 times over that of the nominal alloy composition. Scored bearing surfaces did not exhibit an enriched layer of Si.
ISSN:0096-736X
2577-1531