Simultaneous Grain Growth and Grain Refinement in Bulk Ultrafine-Grained Copper under Tensile Deformation at Room Temperature

Yu, Hailiang; Lü, Cheng; Li, Hui Jun; Godbole, Ajit R; Kong, Charlie; Zhao, Xing

doi:10.1007/s11661-016-3573-9

Cited by 13 publications

(7 citation statements)

References 36 publications

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“…Shi et al [17] found that dislocations in some special configurations are movable, which prevents localized shear deformation and contributes to the improved ductility of CR-processed Zr. Recently, Yu et al [18] found that simultaneous grain growth and grain refinement appear in CR-processed UFG Cu sheets, which results in a high-true failure strain of 1.5. A number of studies on CR-processed UFG Al have reported good ductility of the materials [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties of ARB-processed aluminum alloy 6061 sheets by subsequent asymmetric cryorolling and ageing

Lü

et al. 2016

Materials Science and Engineering: A

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. (2016). Enhanced mechanical properties of ARB-processed aluminum alloy 6061 sheets by subsequent asymmetric cryorolling and ageing. Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, Enhanced mechanical properties of ARB-processed aluminum alloy 6061 sheets by subsequent asymmetric cryorolling and ageing AbstractGrain size and precipitations affect the strength and ductility of ultrafine-grained materials. In this study, aluminum alloy 6061 sheets were fabricated using the accumulative roll bonding (ARB) technique. The ARBprocessed sheets were subsequently subjected to cryorolling and asymmetric cryorolling. The sheets were further aged at 100 °C for 48 h. Mechanical tests show that a combination of asymmetric cryorolling and ageing results in significant improvement in both the ductility and the strength of the ARB-processed sheets. The microstructures of the sheets at different stages of the process were also analyzed using optical microscopy, scanning electron microscopy, transmission electron microscopy and X-ray diffraction in order to correlate the mechanical properties with the microstructure. Abstract: Grain size and precipitations affect the strength and ductility of ultrafine-grained materials. In this study, aluminum alloy 6061 sheets were fabricated using the accumulative roll bonding (ARB) technique. The ARB-processed sheets were subsequently subjected to cryorolling and asymmetric cryorolling. The sheets were further aged at 100C for 48 hours. Mechanical tests show that a combination of asymmetric cryorolling and ageing results in significant improvement in both the ductility and the strength of the ARB-processed sheets. The microstructures of the sheets at different stages of the process were also analyzed using optical microscopy, scanning electron microscopy, transmission electron microscopy and X-ray diffraction in order to correlate the mechanical properties with the microstructure.

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Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties of ARB-processed aluminum alloy 6061 sheets by subsequent asymmetric cryorolling and ageing

Lü

et al. 2016

Materials Science and Engineering: A

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“…Ten diffnrnncn in mnceanical propnrtins rnsults in a snvnrn senar dnformation in ten surfacn laynrs, and tenn ten grains arn rnfinnd grnatly. Dun to ten supprnssion of ten dynamic rncovnry bneavior at cryognnic tnmpnraturn, comparnd wite room-tnmpnraturn roll bonding, cryorolling is morn conducivn to grain rnfinnmnnt [32][33][34][35][36][37], as illustratnd in Fig. 8(b) and (d).…”

Section: ) Interface Bondingmentioning

confidence: 99%

“…Ten UFG/NGs nnar ten intnrfacn grow undnr senar strnss. Tenrn arn many rnports teat UFG/NG grow during room-tnmpnraturn dnformation [32,48,49]. uiao nt al [49] rnportnd teat ten grains grow from 30±7.5 nm to 129±43nm in nlnctro-dnpositnd NG Ni during eige-prnssurn torsion.…”

Section: ) Interface Bondingmentioning

confidence: 99%

Enhanced materials performance of Al/Ti/Al laminate sheets subjected to cryogenic roll bonding

Lü

et al. 2017

J. Mater. Res.

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“…The mechanical properties of laminate composites can be optimized through optimization of intermetallic layer and grain size . In addition, cryorolling is an efficient way to fabricate the ultrafine grain materials such as Cu, Al, and Ti . However, there are few reports on the enhanced mechanical properties of sandwich‐like composites by cryorolling.…”

Section: Introductionmentioning

confidence: 99%

Sandwich‐Like Cu/Al/Cu Composites Fabricated by Cryorolling

et al. 2020

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Herein, sandwich‐like Cu/Al/Cu composites are fabricated by hot rolling (300 °C), cold rolling (25 °C), cryorolling (−100 and −190 °C), respectively. Tensile tests are conducted and the fracture surfaces of both the Al and Cu sides are examined using scanning electron microscopy (SEM) for fractography and SEM‐based energy‐dispersive analysis. The microstructure of the composites is evaluated by optical microscopy and SEM. Results reveal that the highest ultimate tensile strength and the best ductility of the composites have been achieved using cryorolling of the rolling temperature −100 °C. Finally, discussion on grain size, bonding quality, and the thickness of the intermetallic layer between Cu and Al layers on the mechanical properties of the sandwich‐like Cu/Al/Cu composites is focused.

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Simultaneous Grain Growth and Grain Refinement in Bulk Ultrafine-Grained Copper under Tensile Deformation at Room Temperature

Cited by 13 publications

References 36 publications

Enhanced mechanical properties of ARB-processed aluminum alloy 6061 sheets by subsequent asymmetric cryorolling and ageing

Enhanced mechanical properties of ARB-processed aluminum alloy 6061 sheets by subsequent asymmetric cryorolling and ageing

Enhanced materials performance of Al/Ti/Al laminate sheets subjected to cryogenic roll bonding

Sandwich‐Like Cu/Al/Cu Composites Fabricated by Cryorolling

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