Younes, A., Izadi-Gonabadi, H., Sánchez, R. Martínez, Bull, S.J. and González Sanchez, Sergio (2022) Unravelling the combined effect of cooling rate and microalloying on the microstructure and tribological performance of Cu50Zr50. Wear, 494495. p. 204276. ISSN 0043-1648
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Abstract
The combined effect of the cooling rate and microalloying has been studied from suction casted Cu50Zr50, Cu49.5Zr50Fe0.5 and Cu49Zr50Fe1 at. % rods of 2 mm and 4 mm diameter. For the 2 mm samples, ∼1000 K/s cooling rate, the microstructure mostly consists of B2 CuZr austenite and it is basically the same for all compositions. However, 0.5 at. % Fe addition promotes the formation of stress-induced B19’ martensite upon wear testing thus improving the wear resistance of the alloy. For the 4 mm samples, ∼250 K/s cooling rate, a multiphase intermetallic is predominant and when microalloyed with 0.5 at. % Fe, a relatively large volume fraction of as-cast B33 CuZr martensite is formed thus resulting in a reduction of the wear resistance. At high cooling rate the wear mechanism is predominantly delamination wear while for low cooling rate the large continuous grooves are indicative of abrasive wear.
| Item Type: | Article |
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| Additional Information: | Funding information: This work has been partially financed by the EPSRC through the ISCF North East Centre for Energy Materials (EP/R021503/1 (H G. and S.B.)) and the First Grant scheme (EP/P019889/1 (S.G.)). S.G. acknowledges this research contract from EPSRC. A. Younes acknowledges research support from Northumbria University. |
| Subjects: | H300 Mechanical Engineering |
| Department: | Faculties > Engineering and Environment > Mechanical and Construction Engineering |
| Depositing User: | Elena Carlaw |
| Date Deposited: | 24 May 2022 17:56 |
| Last Modified: | 25 May 2022 08:00 |
| URI: | http://nrl.northumbria.ac.uk/id/eprint/49185 |
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