Effect of hardness on three very different forms of wear

Gore, G. J. and Gates, J. D. (1997) Effect of hardness on three very different forms of wear. Wear, 203-204 544-563.

Author Gore, G. J.
Gates, J. D.
Title Effect of hardness on three very different forms of wear
Journal name Wear   Check publisher's open access policy
ISSN 0043-1648
Publication date 1997-03-01
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 203-204
Start page 544
End page 563
Total pages 20
Language eng
Subject 3104 Condensed Matter Physics
2211 Mechanics of Materials
3110 Surfaces and Interfaces
2508 Surfaces, Coatings and Films
2505 Materials Chemistry
Abstract Different abrasive wear tests have been applied to materials with hardnesses ranging from 80 HV (aluminium) to 1700 HV (tungsten carbide). The tests were: dry sand rubber wheel (DSRbrW); a similar test using a steel wheel (DSStlW); a new combined impact-abrasion test (FIA). The DSRbrW results were as expected, giving generally decreasing wear with increasing hardness. White cast irons and tool steels containing coarse, hard carbide particles performed better than more homogeneous materials of comparable hardness. When normalized to load and distance, the DSStlW results for the homogeneous materials were similar to the DSRbrW results. The multi-phase materials performed poorly in the DSStIW test, with volume loss for high-speed steel (880 HV) higher than that of aluminium. Within this group, wear increased with increasing hardness. These unexpected results are explained in terms of (a) differential friction coefficients of wheel and specimen, (b) increased fracture of sand, and (c) introduction of microfracture wear mechanisms. The FIA combined impact-abrasion results lacked clear correlations with hardness. The span of relative wear rates was similar to that reported for materials in ball mills. White cast irons at maximum hardness performed fairly poorly and showed evidence of microfracture.
Keyword Alloy white cast irons
Hardness
Impact-abrasion
Microstructure
Particle kinematics
Three-body abrasion
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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Created: Fri, 29 Dec 2017, 10:55:42 EST