ARB (Accumulative Roll‐Bonding) and other new Techniques to Produce Bulk Ultrafine Grained Materials

Tsuji, Nobuhiro; Saito, Yoshihiro; Lee, Seong-Hee; Minamino, Yoritoshi

doi:10.1002/adem.200310077

Cited by 608 publications

(260 citation statements)

References 34 publications

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“…[6,7] Severe plastic deformation (SPD) is a topdown approach and has been widely explored as a means to develop bulk ultrafine-grained materials. [6,[8][9][10][11][12][13][14] Equalchannel angular pressing (ECAP), [6,8] high-pressure torsion (HPT), [9] accumulative roll bonding (ARB), [10,11] friction-stir processing (FSP), [12][13][14] etc., are some prime examples of SPD techniques. Among these, FSP is relatively new and slightly different from other SPD techniques.…”

Section: Easy Accessibility Of An Ultrafine-grained (Ufg)mentioning

confidence: 99%

Ultrafine-Grained Al-Mg-Sc Alloy via Friction-Stir Processing

Kumar

Mishra

2012

Metall Mater Trans A

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Friction-stir processing (FSP) of twin-roll cast (TRC) Al-Mg-Sc alloy resulted into ultrafinegrained microstructure. The alloy was processed in as-received and aged (563 K [290°C], 22 hours) conditions and at three different tool rotation rates: 800, 400, and 325 rpm. The microstructural features were characterized using electron backscattered diffraction (EBSD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The grain size varied from 0.89 lm to 0.39 lm depending on the processing and initial thermo-mechanical conditions of the alloy. The TRC alloy processed at 325 rpm in aged condition had all the grains less than 1 lm, and 95 pct of grains had high-angle grain boundaries (HAGBs). In all the cases, the fraction of HAGBs were more than 80 pct. The variation of misorientation angle distribution was similar to the theoretical MacKenzie distribution for cubic crystal materials. Grain size analysis at different sections and locations on the transverse section of the dynamically recrystallized zone showed a homogeneous and equiaxed microstructure. The average dispersoid (Al 3 (Sc,Zr)) size was~8.0 nm in diameter obtained using high-resolution TEM. Grain size reduction was observed with increase in Zener-Hollomon parameter. It was shown that under the current microstructural and deformation conditions, dynamic recrystallization via particlestimulated nucleation might not be possible during FSP.

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Section: Easy Accessibility Of An Ultrafine-grained (Ufg)mentioning

confidence: 99%

Ultrafine-Grained Al-Mg-Sc Alloy via Friction-Stir Processing

Kumar

Mishra

2012

Metall Mater Trans A

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“…[1][2][3][4] The UFG metallic materials perform strength much higher than that of the ordinary materials with coarse grain size of 10$100 mm. Various SPD processes have been energetically studied to produce the UFG materials performing excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Change in Microstructure and Texture during Annealing of Pure Copper Heavily Deformed by Accumulative Roll Bonding

et al. 2007

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Pure copper sheets were heavily deformed up to equivalent strain of 4.8 by the accumulative roll-bonding (ARB) processed and then annealed. The ARB processed copper showed the ultra-fine grained microstructure which consisted of relatively equiaxed grains having grain thickness of about 0.2 mm. The DSC measurement of the ARB processed specimens revealed that the recrystallization temperature significantly decreased with increasing the number of the ARB cycles. The stored energy did not increase so much at later stage of ARB, which corresponded with the change in microstructure. The recystallization behavior of the ARB processed copper was governed by discontinuous recrystallization characterized by nucleation and growth process. Remarkable development of cube texture ({100}h001i) was found in the specimen deformed to the equivalent strain of 3.2 or larger and then annealed. The concentration of the cube recrystallization texture depended on the number of ARB cycles.

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“…Apart from the accumulative roll bonding technique, [35][36][37][38] some other rolling methods were also considered as SPD techniques. Because there have already been some reviews of the progress in the ARB technique, [13] in this paper we have focused on the progress of other rolling techniques such as asymmetric rolling (AR), cryorolling (CR), asymmetric cryorolling (ACR), improved ARB technique, and the combination of other SPD and rolling techniques in recent years.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4] A number of articles have reviewed the application of severe plastic deformation (SPD) techniques to UFG/NG metals. [5][6][7][8][9][10][11][12][13] In these reviews, researchers have mainly focused on only a limited number of SPD techniques: the equal channel angular press (ECAP), [7,9] high pressure torsion (HPT), [8] and accumulative roll bonding (ARB). [13] However, to date, there is not a review focusing on the application of other advanced rolling techniques leading to improvement in the mechanical performance of the products, even though the vast majority of all metal products in use are manufactured using metal rolling techniques.…”

Section: Introductionmentioning

confidence: 99%

Special Rolling Techniques for Improvement of Mechanical Properties of Ultrafine‐Grained Metal Sheets: a Review

Lü

Tieu

et al. 2015

Adv Eng Mater

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Interest in ultrafine-grained (UFG) materials has grown rapidly in past 20 years. This review focuses on the application of special rolling techniques for improvement of the mechanical properties of UFG metal sheets. These techniques include asymmetric rolling, cryorolling, asymmetric cryorolling, cross-accumulative roll bonding, and skin-pass rolling. The techniques also include a combination of processes such as equal channel angular press and subsequent rolling, combined high-pressure torsion and subsequent rolling, as well as combined accumulative roll bonding and subsequent asymmetric rolling. We also discuss the main mechanisms leading to improvement in the ductility of UFG materials related to the special rolling techniques. properties of ultrafine-grained (UFG) metal sheets. These techniques include asymmetric rolling, cryorolling, asymmetric cryorolling, cross-accumulative roll bonding and skin-pass rolling. The techniques also include a combination of processes such as equal channel angular press and subsequent rolling, combined high pressure torsion and subsequent rolling, as well as combined accumulative roll bonding and subsequent asymmetric rolling. We also discuss the main mechanisms leading to improvement in the ductility of UFG materials related to the special rolling techniques.

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ARB (Accumulative Roll‐Bonding) and other new Techniques to Produce Bulk Ultrafine Grained Materials

Cited by 608 publications

References 34 publications

Ultrafine-Grained Al-Mg-Sc Alloy via Friction-Stir Processing

Ultrafine-Grained Al-Mg-Sc Alloy via Friction-Stir Processing

Change in Microstructure and Texture during Annealing of Pure Copper Heavily Deformed by Accumulative Roll Bonding

Special Rolling Techniques for Improvement of Mechanical Properties of Ultrafine‐Grained Metal Sheets: a Review

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