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A stored energy analysis of grains with shear texture orientations in Cu-Ni-Si and Fe-Ni alloys processed by high-pressure torsion

A stored energy analysis of grains with shear texture orientations in Cu-Ni-Si and Fe-Ni alloys processed by high-pressure torsion
A stored energy analysis of grains with shear texture orientations in Cu-Ni-Si and Fe-Ni alloys processed by high-pressure torsion
Experiments were conducted to evaluate the evolution of the stored energy in grains with shear texture orientations 퐴1 ∗ {111}<1 ̅1 ̅2>, 퐴2 ∗ {111}<12 ̅1>, A {111}<11 ̅0>, 퐴̅ {111}<01 ̅1>, B {112}<11 ̅0>, 퐵 ̅ {112}<11 ̅0> and C {100}<110> for Cu-2.5Ni-0.6Si and Fe-36Ni (wt.%) alloys after high-pressure torsion (HPT) processing up to 10 turns at ambient temperature using a Kernel Average Misorientation (KAM) approach. A typical stable shear texture developed in the Cu-2.5Ni-0.6Si alloy immediately after 1 turn whereas there was a continuous transformation of texture in the Fe-36Ni alloy up to 10 turns. The results show that HPT processing produces similar stored energies of ~35 J/mol and ~24 J/mol but with the different shear texture components for the Cu-2.5Ni-0.6Si and the Fe-36Ni alloy, respectively. The stored energy in all shear components for the Cu-2.5Ni-0.6Si alloy increases with increasing HPT processing up to 1 turn and then slightly decreases through 10 turns. By contrast, the stored energy of the Fe-36Ni alloy continuously decreases with increasing numbers of HPT turns. These evolutions are examined with reference to the initial textures, dynamic recrystallization, grain refinement mechanisms and differences in the stacking fault energies.
cu-ni-si alloy, fe-ni alloy, high-pressure torsion, sheer texture, stacking fault energy, storey energy
0925-8388
Azzeddine, Hiba
f32633f8-2f8a-433e-9180-ada2b8704eae
Baudin, Thierry
448e215d-c156-4c0a-9a3a-04078a7174b8
Rafferty, Laura Anne
27e96b50-c28d-4278-8168-21931d5c6a2d
Brisset, Francois
b9f69e75-4055-44be-8b62-497b12873d51
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Bradai, Djamel
554ec639-52df-4169-8044-53485b61c829
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Azzeddine, Hiba
f32633f8-2f8a-433e-9180-ada2b8704eae
Baudin, Thierry
448e215d-c156-4c0a-9a3a-04078a7174b8
Rafferty, Laura Anne
27e96b50-c28d-4278-8168-21931d5c6a2d
Brisset, Francois
b9f69e75-4055-44be-8b62-497b12873d51
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Bradai, Djamel
554ec639-52df-4169-8044-53485b61c829
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Azzeddine, Hiba, Baudin, Thierry, Rafferty, Laura Anne, Brisset, Francois, Huang, Yi, Kawasaki, Megumi, Bradai, Djamel and Langdon, Terence G (2020) A stored energy analysis of grains with shear texture orientations in Cu-Ni-Si and Fe-Ni alloys processed by high-pressure torsion. Journal of Alloys and Compounds, [158142]. (doi:10.1016/j.jallcom.2020.158142).

Record type: Article

Abstract

Experiments were conducted to evaluate the evolution of the stored energy in grains with shear texture orientations 퐴1 ∗ {111}<1 ̅1 ̅2>, 퐴2 ∗ {111}<12 ̅1>, A {111}<11 ̅0>, 퐴̅ {111}<01 ̅1>, B {112}<11 ̅0>, 퐵 ̅ {112}<11 ̅0> and C {100}<110> for Cu-2.5Ni-0.6Si and Fe-36Ni (wt.%) alloys after high-pressure torsion (HPT) processing up to 10 turns at ambient temperature using a Kernel Average Misorientation (KAM) approach. A typical stable shear texture developed in the Cu-2.5Ni-0.6Si alloy immediately after 1 turn whereas there was a continuous transformation of texture in the Fe-36Ni alloy up to 10 turns. The results show that HPT processing produces similar stored energies of ~35 J/mol and ~24 J/mol but with the different shear texture components for the Cu-2.5Ni-0.6Si and the Fe-36Ni alloy, respectively. The stored energy in all shear components for the Cu-2.5Ni-0.6Si alloy increases with increasing HPT processing up to 1 turn and then slightly decreases through 10 turns. By contrast, the stored energy of the Fe-36Ni alloy continuously decreases with increasing numbers of HPT turns. These evolutions are examined with reference to the initial textures, dynamic recrystallization, grain refinement mechanisms and differences in the stacking fault energies.

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Accepted/In Press date: 26 November 2020
e-pub ahead of print date: 30 November 2020
Keywords: cu-ni-si alloy, fe-ni alloy, high-pressure torsion, sheer texture, stacking fault energy, storey energy

Identifiers

Local EPrints ID: 446199
URI: http://eprints.soton.ac.uk/id/eprint/446199
ISSN: 0925-8388
PURE UUID: 827fbeae-2562-487e-b4d0-1a9367ea72ab
ORCID for Yi Huang: ORCID iD orcid.org/0000-0001-9259-8123
ORCID for Terence G Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 28 Jan 2021 17:30
Last modified: 26 Nov 2021 02:57

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Contributors

Author: Hiba Azzeddine
Author: Thierry Baudin
Author: Laura Anne Rafferty
Author: Francois Brisset
Author: Yi Huang ORCID iD
Author: Megumi Kawasaki
Author: Djamel Bradai

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