Sliding Wear of Nanocrystalline Ni-W: Structural Evolution and the Apparent Breakdown of Archard Scaling
Sliding wear of nanocrystalline Ni–W alloys with grain sizes of 3–47 nm, a range which spans the transition in deformation mechanisms from intra- to inter-granular, has been studied through pin-on-disk wear testing. The extreme conditions produced during sliding wear are found to result in structura...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Elsevier B.V.
2012
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| Online Access: | http://hdl.handle.net/1721.1/69863 https://orcid.org/0000-0001-9856-2682 |
| _version_ | 1826212120828575744 |
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| author | Rupert, Timothy J. Schuh, Christopher A. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Rupert, Timothy J. Schuh, Christopher A. |
| author_sort | Rupert, Timothy J. |
| collection | MIT |
| description | Sliding wear of nanocrystalline Ni–W alloys with grain sizes of 3–47 nm, a range which spans the transition in deformation mechanisms from intra- to inter-granular, has been studied through pin-on-disk wear testing. The extreme conditions produced during sliding wear are found to result in structural evolution and a deviation from Archard scaling for the finest grain sizes; in the finest nanocrystalline materials wear resistance is higher than would be expected based on hardness alone. The repetitive sliding load is found to lead to a modest amount of grain growth and grain boundary relaxation, which in turn leads to local hardening in the wear track. Analysis of the dynamic microstructure suggests that it is produced primarily as a result of local plasticity and is not principally due to frictional heating. |
| first_indexed | 2024-09-23T15:16:41Z |
| format | Article |
| id | mit-1721.1/69863 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:16:41Z |
| publishDate | 2012 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | mit-1721.1/698632022-10-02T01:52:11Z Sliding Wear of Nanocrystalline Ni-W: Structural Evolution and the Apparent Breakdown of Archard Scaling Rupert, Timothy J. Schuh, Christopher A. Massachusetts Institute of Technology. Department of Materials Science and Engineering Schuh, Christopher A. Schuh, Christopher A. Rupert, Timothy J. Sliding wear of nanocrystalline Ni–W alloys with grain sizes of 3–47 nm, a range which spans the transition in deformation mechanisms from intra- to inter-granular, has been studied through pin-on-disk wear testing. The extreme conditions produced during sliding wear are found to result in structural evolution and a deviation from Archard scaling for the finest grain sizes; in the finest nanocrystalline materials wear resistance is higher than would be expected based on hardness alone. The repetitive sliding load is found to lead to a modest amount of grain growth and grain boundary relaxation, which in turn leads to local hardening in the wear track. Analysis of the dynamic microstructure suggests that it is produced primarily as a result of local plasticity and is not principally due to frictional heating. United States. Army Research Office (contract W911NF-09-1-0422) 2012-03-26T19:28:13Z 2012-03-26T19:28:13Z 2010-05 2010-03 Article http://purl.org/eprint/type/JournalArticle 1359-6454 1873-2453 http://hdl.handle.net/1721.1/69863 Rupert, Timothy J., and Christopher A. Schuh. “Sliding Wear of Nanocrystalline Ni–W: Structural Evolution and the Apparent Breakdown of Archard Scaling.” Acta Materialia 58.12 (2010): 4137–4148. https://orcid.org/0000-0001-9856-2682 en_US http://dx.doi.org/10.1016/j.actamat.2010.04.005 Acta Materialia Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf Elsevier B.V. Prof. Schuh via Angie Locknar |
| spellingShingle | Rupert, Timothy J. Schuh, Christopher A. Sliding Wear of Nanocrystalline Ni-W: Structural Evolution and the Apparent Breakdown of Archard Scaling |
| title | Sliding Wear of Nanocrystalline Ni-W: Structural Evolution and the Apparent Breakdown of Archard Scaling |
| title_full | Sliding Wear of Nanocrystalline Ni-W: Structural Evolution and the Apparent Breakdown of Archard Scaling |
| title_fullStr | Sliding Wear of Nanocrystalline Ni-W: Structural Evolution and the Apparent Breakdown of Archard Scaling |
| title_full_unstemmed | Sliding Wear of Nanocrystalline Ni-W: Structural Evolution and the Apparent Breakdown of Archard Scaling |
| title_short | Sliding Wear of Nanocrystalline Ni-W: Structural Evolution and the Apparent Breakdown of Archard Scaling |
| title_sort | sliding wear of nanocrystalline ni w structural evolution and the apparent breakdown of archard scaling |
| url | http://hdl.handle.net/1721.1/69863 https://orcid.org/0000-0001-9856-2682 |
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