Annealing-induced hardening in ultrafine-grained Ni-Mo alloys
Annealing-induced hardening in ultrafine-grained Ni-Mo alloys
The influence of Mo alloying on annealing-induced hardening in ultrafine-grained (UFG) Ni is studied. The hardening observed after low temperature annealing is explained by the annihilation of mobile dislocations and a concomitant clustering of the remaining dislocations into low energy configurations. This study reveals that, with increasing Mo concentration, the hardening effect decreases as the Mo solute atoms hinder the annihilation and rearrangement of dislocations. This trend is the opposite to that observed in electrodeposited Ni-Mo alloys where the larger alloying element concentration yields a higher annealing-induced strengthening effect. The difference is attributed to the different deformation mechanisms in UFG and nanocrystalline Ni-Mo alloys.
1-4
Gubicza, Jenő
823a4bb9-0efc-40eb-829e-74c5ab3c82c6
Pereira, Pedro H.R.
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Kapoor, Garima
37a8e8b0-0ed0-451c-8b22-925cc879d1b9
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Sarma, V. Subramanya
7d6e49a8-eec8-4f87-a124-d4b7a51e6777
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
30 September 2018
Gubicza, Jenő
823a4bb9-0efc-40eb-829e-74c5ab3c82c6
Pereira, Pedro H.R.
9ee129fd-0e06-482d-990c-971aaf83b1d0
Kapoor, Garima
37a8e8b0-0ed0-451c-8b22-925cc879d1b9
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Sarma, V. Subramanya
7d6e49a8-eec8-4f87-a124-d4b7a51e6777
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Gubicza, Jenő, Pereira, Pedro H.R., Kapoor, Garima, Huang, Yi, Sarma, V. Subramanya and Langdon, Terence G.
(2018)
Annealing-induced hardening in ultrafine-grained Ni-Mo alloys.
Advanced Engineering Materials, 20 (9), , [1800184].
(doi:10.1002/adem.201800184).
Abstract
The influence of Mo alloying on annealing-induced hardening in ultrafine-grained (UFG) Ni is studied. The hardening observed after low temperature annealing is explained by the annihilation of mobile dislocations and a concomitant clustering of the remaining dislocations into low energy configurations. This study reveals that, with increasing Mo concentration, the hardening effect decreases as the Mo solute atoms hinder the annihilation and rearrangement of dislocations. This trend is the opposite to that observed in electrodeposited Ni-Mo alloys where the larger alloying element concentration yields a higher annealing-induced strengthening effect. The difference is attributed to the different deformation mechanisms in UFG and nanocrystalline Ni-Mo alloys.
Text
Gubicza-Adv_Eng_Mater-2018 revised
- Accepted Manuscript
More information
Accepted/In Press date: 16 April 2018
e-pub ahead of print date: 18 May 2018
Published date: 30 September 2018
Identifiers
Local EPrints ID: 419723
URI: http://eprints.soton.ac.uk/id/eprint/419723
ISSN: 1438-1656
PURE UUID: 7d1f358a-c19b-4b59-aeca-1a93b4b2f83c
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Date deposited: 20 Apr 2018 16:30
Last modified: 16 Mar 2024 06:29
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Contributors
Author:
Jenő Gubicza
Author:
Pedro H.R. Pereira
Author:
Garima Kapoor
Author:
Yi Huang
Author:
V. Subramanya Sarma
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