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- Publisher Website: 10.1016/j.jallcom.2018.03.017
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Article: A novel method for the fabrication of Al-matrix nanocomposites reinforced by mono-dispersed TiAl3 intermetallic via a three-step process of cold-roll bonding, heat-treatment and accumulative roll bonding
Title | A novel method for the fabrication of Al-matrix nanocomposites reinforced by mono-dispersed TiAl3 intermetallic via a three-step process of cold-roll bonding, heat-treatment and accumulative roll bonding |
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Authors | |
Keywords | Accumulative roll bonding Aluminides Heat treatment Intermetallics TiAl3 |
Issue Date | 2018 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jallcom |
Citation | Journal of Alloys and Compounds, 2018, v. 747, p. 217-226 How to Cite? |
Abstract | A novel method to fabricate aluminum metal-matrix composites reinforced by mono-dispersed TiAl3 intermetallic particles, by cold-roll bonding, heat treatment, followed by accumulative roll bonding (ARB), is demonstrated. Roll bonding of 1100-Al sheets inserted with Ti powder was carried out at room temperature with 50% thickness reduction. Complete conversion of the initial Ti particles into TiAl3 intermetallic was achieved by a post-rolling annealing treatment at 590 °C for 2 h, which results in the formation of coarse TiAl3 particles along the interface of the original 1100-Al sheets. Subsequent ARB process was applied to break up and disperse the TiAl3 phase, and after 5 cycles of ARB, an aluminum-matrix composite with mono-dispersed TiAl3 particles of submicron sizes was achieved. The Al matrix also undergoes dynamic recrystallization during the ARB process to result in a fine-grained microstructure (size less than 500 nm). The hardness, tensile strength and elongation of the Al/TiAl3 composite were found to increase with the number of ARB cycles. The tensile strength of the Al/TiAl3 composite after the 5th cycle reaches 400 MPa, which is significantly higher than the 300 MPa of monolithic 1100-Al processed in the same way. The tensile elongation of the Al/TiAl3 composite after 5 cycles of ARB exhibits a good value of ∼8%, with a ductile fracture mode. This is the first successful attempt to achieve Al-matrix nanocomposites reinforced by mono-dispersed TiAl3 intermetallic based on an ARB method. |
Persistent Identifier | http://hdl.handle.net/10722/260465 |
ISSN | 2023 Impact Factor: 5.8 2023 SCImago Journal Rankings: 1.103 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Yazdani, Z | - |
dc.contributor.author | Toroghinejad, MR | - |
dc.contributor.author | Edris, H | - |
dc.contributor.author | Ngan, AHW | - |
dc.date.accessioned | 2018-09-14T08:42:12Z | - |
dc.date.available | 2018-09-14T08:42:12Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Journal of Alloys and Compounds, 2018, v. 747, p. 217-226 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | http://hdl.handle.net/10722/260465 | - |
dc.description.abstract | A novel method to fabricate aluminum metal-matrix composites reinforced by mono-dispersed TiAl3 intermetallic particles, by cold-roll bonding, heat treatment, followed by accumulative roll bonding (ARB), is demonstrated. Roll bonding of 1100-Al sheets inserted with Ti powder was carried out at room temperature with 50% thickness reduction. Complete conversion of the initial Ti particles into TiAl3 intermetallic was achieved by a post-rolling annealing treatment at 590 °C for 2 h, which results in the formation of coarse TiAl3 particles along the interface of the original 1100-Al sheets. Subsequent ARB process was applied to break up and disperse the TiAl3 phase, and after 5 cycles of ARB, an aluminum-matrix composite with mono-dispersed TiAl3 particles of submicron sizes was achieved. The Al matrix also undergoes dynamic recrystallization during the ARB process to result in a fine-grained microstructure (size less than 500 nm). The hardness, tensile strength and elongation of the Al/TiAl3 composite were found to increase with the number of ARB cycles. The tensile strength of the Al/TiAl3 composite after the 5th cycle reaches 400 MPa, which is significantly higher than the 300 MPa of monolithic 1100-Al processed in the same way. The tensile elongation of the Al/TiAl3 composite after 5 cycles of ARB exhibits a good value of ∼8%, with a ductile fracture mode. This is the first successful attempt to achieve Al-matrix nanocomposites reinforced by mono-dispersed TiAl3 intermetallic based on an ARB method. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jallcom | - |
dc.relation.ispartof | Journal of Alloys and Compounds | - |
dc.subject | Accumulative roll bonding | - |
dc.subject | Aluminides | - |
dc.subject | Heat treatment | - |
dc.subject | Intermetallics | - |
dc.subject | TiAl3 | - |
dc.title | A novel method for the fabrication of Al-matrix nanocomposites reinforced by mono-dispersed TiAl3 intermetallic via a three-step process of cold-roll bonding, heat-treatment and accumulative roll bonding | - |
dc.type | Article | - |
dc.identifier.email | Ngan, AHW: hwngan@hku.hk | - |
dc.identifier.authority | Ngan, AHW=rp00225 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.jallcom.2018.03.017 | - |
dc.identifier.scopus | eid_2-s2.0-85042944547 | - |
dc.identifier.hkuros | 289986 | - |
dc.identifier.volume | 747 | - |
dc.identifier.spage | 217 | - |
dc.identifier.epage | 226 | - |
dc.identifier.isi | WOS:000429175700026 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0925-8388 | - |