Fabrication of hybrid nanocrystalline Al-Ti alloys by mechanical bonding through high-pressure torsion
Fabrication of hybrid nanocrystalline Al-Ti alloys by mechanical bonding through high-pressure torsion
This study demonstrates an approach of utilizing high-pressure torsion (HPT) to fabricate a novel hybrid material by the direct bonding of Al and Ti disks at room temperature under a compressive pressure of 6.0 GPa and with increasing numbers of HPT turns up to 50. Detailed structural observations revealed the formation of a multi-layered nanostructure in the edge regions of the disks with a grain size of ~30 nm. X-ray diffraction (XRD) and selected area electron diffraction (SAED) confirmed the presence of three intermetallic compounds, AlTi, Al3Ti and Ti3Al, in the layered structures. Processing by HPT led to the formation of a hybrid nanocomposite with exceptional hardness (over 300 Hv) in the edge regions of the disks. Special emphasis was placed on understanding the evolution of hardness in the hybrid material. The investigation demonstrates a significant opportunity for using HPT processing to deepen the knowledge on diffusion bonding and mechanical joining technologies as well as for fabricating new and valuable hybrid nanomaterials.
high-pressure torsion, hybrid materials, titanium, aluminium, ultrafine grains
Bazarnik, Piotr
844b4a15-226a-4275-9cee-812669fa033c
Bartkowska, Aleksandra
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Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Szlązak, Karol
e572af63-b40f-4ecd-b37d-62ac6debabb1
Adamczyk-Cieslak, Boguslawa
eb9226c6-107a-4ea5-8ecf-45059da2528f
Sort, Jordi
a10bbec4-47d5-47c0-b796-fcd545144c8c
Lewandowska, Malgorzata
c574d02d-d34d-4164-8ed1-90c3d77584d2
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
29 December 2021
Bazarnik, Piotr
844b4a15-226a-4275-9cee-812669fa033c
Bartkowska, Aleksandra
d5b50d44-5c46-429b-b511-da12690978ef
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Szlązak, Karol
e572af63-b40f-4ecd-b37d-62ac6debabb1
Adamczyk-Cieslak, Boguslawa
eb9226c6-107a-4ea5-8ecf-45059da2528f
Sort, Jordi
a10bbec4-47d5-47c0-b796-fcd545144c8c
Lewandowska, Malgorzata
c574d02d-d34d-4164-8ed1-90c3d77584d2
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Bazarnik, Piotr, Bartkowska, Aleksandra, Huang, Yi, Szlązak, Karol, Adamczyk-Cieslak, Boguslawa, Sort, Jordi, Lewandowska, Malgorzata and Langdon, Terence G.
(2021)
Fabrication of hybrid nanocrystalline Al-Ti alloys by mechanical bonding through high-pressure torsion.
Materials Science & Engineering: A, [142549].
(doi:10.1016/j.msea.2021.142549).
Abstract
This study demonstrates an approach of utilizing high-pressure torsion (HPT) to fabricate a novel hybrid material by the direct bonding of Al and Ti disks at room temperature under a compressive pressure of 6.0 GPa and with increasing numbers of HPT turns up to 50. Detailed structural observations revealed the formation of a multi-layered nanostructure in the edge regions of the disks with a grain size of ~30 nm. X-ray diffraction (XRD) and selected area electron diffraction (SAED) confirmed the presence of three intermetallic compounds, AlTi, Al3Ti and Ti3Al, in the layered structures. Processing by HPT led to the formation of a hybrid nanocomposite with exceptional hardness (over 300 Hv) in the edge regions of the disks. Special emphasis was placed on understanding the evolution of hardness in the hybrid material. The investigation demonstrates a significant opportunity for using HPT processing to deepen the knowledge on diffusion bonding and mechanical joining technologies as well as for fabricating new and valuable hybrid nanomaterials.
Text
Bazarnik manuscript 2021 final combined - Copy
- Accepted Manuscript
Text
Bazarnik FINAL copy
- Accepted Manuscript
More information
Accepted/In Press date: 22 December 2021
e-pub ahead of print date: 25 December 2021
Published date: 29 December 2021
Keywords:
high-pressure torsion, hybrid materials, titanium, aluminium, ultrafine grains
Identifiers
Local EPrints ID: 454131
URI: http://eprints.soton.ac.uk/id/eprint/454131
PURE UUID: 4453b2a6-0e2a-48ba-8a08-c3bf23ef6b78
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Date deposited: 01 Feb 2022 17:38
Last modified: 17 Mar 2024 07:02
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Contributors
Author:
Piotr Bazarnik
Author:
Aleksandra Bartkowska
Author:
Yi Huang
Author:
Karol Szlązak
Author:
Boguslawa Adamczyk-Cieslak
Author:
Jordi Sort
Author:
Malgorzata Lewandowska
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