Evolution of plasticity-based wear damage in gross sliding fretting of a Ti-6Al-4V non-conforming contact
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 wea...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier Science Ltd
2017
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/4388/ http://eprints.uthm.edu.my/4388/1/AJ%202017%20%28154%29%20Evolution%20of%20plasticity-based%20wear%20damage.pdf |
| Summary: | 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. |
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