Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
614597 | Tribology International | 2014 | 17 Pages |
Abstract
This investigation considered the multiscale tribo-mechanical evaluations of CoCrMo (Stellite®21) alloys manufactured via two different processing routes of casting and HIP-consolidation from powder (Hot Isostatic Pressing). These involved hardness, nanoscratch, impact toughness, abrasive wear and sliding wear evaluations using pin-on-disc and ball-on-flat tests. HIPing improved the nanoscratch and ball-on-flat sliding wear performance due to higher hardness and work-hardening rate of the metal matrix. The cast alloy however exhibited superior abrasive wear and self-mated pin-on-disc wear performance. The tribological properties were more strongly influenced by the CoCr matrix, which is demonstrated in nanoscratch analysis.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
R. Ahmed, H.L. de Villiers Lovelock, N.H. Faisal, S. Davies,