Evolution of plasticity-based wear damage in gross sliding fretting of a Ti-6Al-4V non-conforming contact

Mohd Tobi, A.L.; Sun, Wei; Shipway, P.H.

Abstract

This paper examines the evidence for a plasticity based wear mechanism in the fretting wear of Ti-6Al-4V. Driven by near-surface plastic strain accumulation, the generation of wear debris evolves from coarse metallic debris towards loose fine oxide debris generating W-shape wear scar. The overall wear effect however, is less pronounced at the later stages of wear due to a reduced propensity for plastic deformation in the contact associated with wear induced contact pressure reduction. The evidence suggests that the high wear rate at the early stages of a fretting test are due to debris = generation associated with gross plasticity whilst at the later stages, lower wear is associated with less plasticity accumulation.

Citation

Mohd Tobi, A., Sun, W., & Shipway, P. (in press). Evolution of plasticity-based wear damage in gross sliding fretting of a Ti-6Al-4V non-conforming contact. Tribology International, 113, https://doi.org/10.1016/j.triboint.2017.01.010

• Journal Article Type: Article
• Acceptance Date: Jan 10, 2017
• Online Publication Date: Jan 11, 2017
• Deposit Date: Jan 13, 2017
• Publicly Available Date: Jan 13, 2017
• Journal: Tribology International
• Print ISSN: 0301-679X
• Electronic ISSN: 1879-2464
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 113
• DOI: https://doi.org/10.1016/j.triboint.2017.01.010
• Keywords: Plasticity wear; Gross sliding, fretting wear; Ti-6Al-4V
• Public URL: https://nottingham-repository.worktribe.com/output/840886
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0301679X17300105
• Contract Date: Jan 13, 2017