Exceptionally high strength and good ductility in an ultrafine-grained 316L steel processed by severe plastic deformation and subsequent annealing
Exceptionally high strength and good ductility in an ultrafine-grained 316L steel processed by severe plastic deformation and subsequent annealing
An investigation was conducted to evaluate the effect of annealing at different temperatures on the tensile properties of ultrafine-grained 316L stainless steel processed by high-pressure torsion (HPT). A “moderate-temperature” annealing at 740 K resulted in reduced strength and elongation due to the annihilation of mobile dislocations. A “high-temperature” annealing at 1000 K yielded a remarkably good combination of yield strength (~1330 MPa) and elongation to failure (~43%) which can be attributed to the almost full reversion of α’-martensite formed during HPT into γ-austenite while the grain size remained very fine with a
value of about 200 nm.
240-242
EI-Tahawy, Moustafa
5383d402-423d-4636-b988-8e8f1a9ad65f
Pereira, Pedro H.R.
9ee129fd-0e06-482d-990c-971aaf83b1d0
Huang, Yi
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Park, Hyeji
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Choe, Heeman
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Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Gubicza, Jenő
046ca28c-f226-40bc-a510-9f1bc0a3a29d
1 March 2018
EI-Tahawy, Moustafa
5383d402-423d-4636-b988-8e8f1a9ad65f
Pereira, Pedro H.R.
9ee129fd-0e06-482d-990c-971aaf83b1d0
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Park, Hyeji
4ebfaaae-8282-402b-bf38-bd6fcf1736ec
Choe, Heeman
712ed801-cd85-4e03-81d7-0ec986576da8
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Gubicza, Jenő
046ca28c-f226-40bc-a510-9f1bc0a3a29d
EI-Tahawy, Moustafa, Pereira, Pedro H.R., Huang, Yi, Park, Hyeji, Choe, Heeman, Langdon, Terence G. and Gubicza, Jenő
(2018)
Exceptionally high strength and good ductility in an ultrafine-grained 316L steel processed by severe plastic deformation and subsequent annealing.
Materials Letters, 214, .
(doi:10.1016/j.matlet.2017.12.040).
Abstract
An investigation was conducted to evaluate the effect of annealing at different temperatures on the tensile properties of ultrafine-grained 316L stainless steel processed by high-pressure torsion (HPT). A “moderate-temperature” annealing at 740 K resulted in reduced strength and elongation due to the annihilation of mobile dislocations. A “high-temperature” annealing at 1000 K yielded a remarkably good combination of yield strength (~1330 MPa) and elongation to failure (~43%) which can be attributed to the almost full reversion of α’-martensite formed during HPT into γ-austenite while the grain size remained very fine with a
value of about 200 nm.
Text
EI-Tahawy-ML accepted manuscript_2017-12
- Accepted Manuscript
More information
Accepted/In Press date: 9 December 2017
e-pub ahead of print date: 11 December 2017
Published date: 1 March 2018
Identifiers
Local EPrints ID: 416753
URI: http://eprints.soton.ac.uk/id/eprint/416753
ISSN: 0167-577X
PURE UUID: 9f98d63e-60b5-4756-bfc9-5dd8c28a0934
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Date deposited: 08 Jan 2018 17:30
Last modified: 16 Mar 2024 06:01
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Contributors
Author:
Moustafa EI-Tahawy
Author:
Pedro H.R. Pereira
Author:
Yi Huang
Author:
Hyeji Park
Author:
Heeman Choe
Author:
Jenő Gubicza
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