Mechanical properties and microstructures of ultrafine-grained pure aluminum by asymmetric rolling

Jiang, Jianhua; Ding, Yi; Zuo, Fangqing; Shan, Aidang

doi:10.1016/j.scriptamat.2009.02.016

Cited by 119 publications

(63 citation statements)

References 16 publications

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“…2. [46] Nearly equiaxed UFGs with mean size <1 m were achieved through AR when the rolling reduction ratio reached 90%.…”

Section: Asymmetric Rolling (Ar)mentioning

confidence: 99%

“…The improvement of normal anisotropy in AR-processed sheets ( ̅ >0.9) results in a greater limiting drawing ratio of ~2.17, which is beneficial to the sheet formability. The mechanical properties and microstructure of both AR-and SR-processed Al were studied by Cui [39] and Jiang et al [46] respectively. The yield strength was substantially increased by an AR process as shown in Fig.…”

Section: Asymmetric Rolling (Ar)mentioning

confidence: 99%

“…[46] Compared to an Al alloy sheet, the Mg sheet is difficult to process using SR because it has less deformation system. In this respect, the AR technique has more advantages.…”

Section: Fig 2 Engineering Stress Vs Engineering Strain Curves Of Amentioning

confidence: 99%

“…Table 1 summarizes the special rolling techniques and their characteristics respectively. [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56] Cryorolling Refining grains through suppressing dynamic recovery during deformation. The technique can improve the mechanical properties of Al, Zr, Ti, etc.…”

Section: Fig 24 Illustration Of Ultrathin Foils By Arb and Asymmetricmentioning

confidence: 99%

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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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“…2. [46] Nearly equiaxed UFGs with mean size <1 m were achieved through AR when the rolling reduction ratio reached 90%.…”

Section: Asymmetric Rolling (Ar)mentioning

confidence: 99%

Section: Asymmetric Rolling (Ar)mentioning

confidence: 99%

“…[46] Compared to an Al alloy sheet, the Mg sheet is difficult to process using SR because it has less deformation system. In this respect, the AR technique has more advantages.…”

Section: Fig 2 Engineering Stress Vs Engineering Strain Curves Of Amentioning

confidence: 99%

Section: Fig 24 Illustration Of Ultrathin Foils By Arb and Asymmetricmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Nowadays many variants of SPD techniques are available [4]. Asymmetric rolling process is one of them [5][6][7][8]. Contrary to other SPD methods such as high pressure torsion and equal channel angular pressing, the asymmetric rolling allows to provide the possibility for overcoming the limitation of producing ultrafine grained materials with large dimensions due to its continuous feature.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer modeling in asymmetrical sheet rolling of aluminium alloys with ultra high shear strain

Pesin

Pustovoytov

2016

MATEC Web Conf.

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Abstract. Asymmetrical sheet rolling is a method of severe plastic deformation (SPD) for production of aluminium alloys with UFG structure. Prediction of sheet temperature during SPD is important. The temperature of sheet is changed due to the conversion of mechanical work into heat through sliding on contact surfaces and high shear strain. Paper presents the results of FEM simulation of the effect of contact friction, rolling speed and rolls speed ratio on the heating of aluminium sheets during asymmetrical rolling.

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Differential Speed Rolling of Ni₃Al‐Based Intermetallic Alloy − Electron Backscatter Diffraction and X‐Ray Diffraction Study on Structure and Texture Evolution

Polkowski¹,

Jóźwik²,

Łyszkowski³

et al. 2016

Adv Eng Mater

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Results of electron backscatter diffraction and X-ray diffraction study on a microstructure, long range order, and texture evolution upon a differential speed rolling (DSR) of Zr and B doped Ni 3 Al-based intermetallic alloy, are shown in the paper. The material is subjected to a 2-pass cold rolling to the final thickness reduction of 50% under following upper to lower roll speed ratio R values: R ¼ 1 (the equal speed rolling), R ¼ 2, R ¼ 3, and R ¼ 4 (the DSR). Obtained results supported by literature data allows concluding that an introduction of the rolls speed asymmetry leads to a higher accumulated strain facilitating a strain induced disordering of L1 2 superlattice. This transformation is assisted by a changeover of a crystallographic texture type; indirectly indicating on a possible activation of mechanical twinning.

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Mechanical properties and microstructures of ultrafine-grained pure aluminum by asymmetric rolling

Cited by 119 publications

References 16 publications

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

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

Heat transfer modeling in asymmetrical sheet rolling of aluminium alloys with ultra high shear strain

Differential Speed Rolling of Ni₃Al‐Based Intermetallic Alloy − Electron Backscatter Diffraction and X‐Ray Diffraction Study on Structure and Texture Evolution

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Mechanical properties and microstructures of ultrafine-grained pure aluminum by asymmetric rolling

Cited by 119 publications

References 16 publications

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

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

Heat transfer modeling in asymmetrical sheet rolling of aluminium alloys with ultra high shear strain

Differential Speed Rolling of Ni3Al‐Based Intermetallic Alloy − Electron Backscatter Diffraction and X‐Ray Diffraction Study on Structure and Texture Evolution

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Differential Speed Rolling of Ni₃Al‐Based Intermetallic Alloy − Electron Backscatter Diffraction and X‐Ray Diffraction Study on Structure and Texture Evolution