Investigation on the Strain Distribution in Tube High-Pressure Shearing

Meng, Jia Jie; Li, Zheng; Liu, Ying; Zhu, Ye Bin; Wang, Shun; Lin, Kui; Tao, Jia; Wang, Jing Tao

doi:10.3390/met9101117

Cited by 6 publications

(11 citation statements)

References 29 publications

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“…1 . Representative samples were taken from the annular cross-sections at half height of the tube to avoid the complexity of edge effects 29 , 34 .…”

Section: Resultsmentioning

confidence: 99%

“…This alternative shear technique was chronologically first developed as rotation shear (RS) 30 and thereafter there were different subsequent versions of high pressure tube twisting (HPTT) 31 , 32 and t -HPS. According to earlier analyses 29 , 33 , 34 , processing by t -HPS, as shown schematically in left of Fig. 1 , which produces a plane shear strain with a constant shear direction (azimuthal), appears to be a potential processing technology to develop a strong deformation texture that may induce a single component texture in appropriate subsequent treatments.…”

Section: Introductionmentioning

confidence: 93%

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Evidence for a stable single component sharp texture in high purity aluminum during tube high-pressure shearing at room temperature

Zhu

et al. 2022

Sci Rep

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A stable {$$\stackrel{\mathrm{-}}{1}{\text{10}}$$ 1 - 10 } <110> single component sharp texture was obtained during ambient temperature tube High-Pressure Shearing (t-HPS) of 99.999% purity aluminum. It is shown that the grain size and the grain aspect ratio saturate at ~ 8 μm and ~ 1.6, respectively, at an equivalent strain of ~ 30 and the high-angle grain boundary fraction continues to decrease after this saturation even to equivalent strains exceeding ~ 200. The {$$\stackrel{\mathrm{-}}{1}{\text{10}}$$ 1 - 10 } <110> texture emerges at an equivalent strain of ~ 6 to 9 with the completion of recrystallization and develops gradually as a sole component sharp texture with increasing intensity upon further processing. This component is a stable orientation in t-HPS processing although it was not previously observed experimentally as a shear texture. Thus, t-HPS processing provides a new and effective experimental tool for simple shear testing that is distinctly different from earlier shear strain methods such as torsional processing.

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“…1 . Representative samples were taken from the annular cross-sections at half height of the tube to avoid the complexity of edge effects 29 , 34 .…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 93%

Evidence for a stable single component sharp texture in high purity aluminum during tube high-pressure shearing at room temperature

Zhu

et al. 2022

Sci Rep

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“…Other methods of tube processing were introduced as modifications of HPT exploiting deformation under high hydrostatic pressure. Tube high-pressure shearing (t-HPS) [12,13] and high-pressure tube twisting (HPTT) [14,15] are typical representatives of these methods. In both methods, high hydrostatic pressure is applied on a tube positioned between inner and outer mandrels, each of which may rotate independently thus evoking shear deformation of the tube wall.…”

Section: Introductionmentioning

confidence: 99%

The Role of Mandrel Rotation during CSET Processing Demonstrated on a 3003 Aluminium Alloy

Molnárová

Habr

Čapek

et al. 2022

Metals

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Recently, the complex shearing of extruded tube (CSET) technique was proposed representing a new way of processing tubes from a bulk billet as a combination of extrusion with two passes of equal channel angular processing and possible mandrel rotation. In the present paper, the influence of mandrel rotation on the final microstructure and mechanical properties of the tube fabricated of a 3003 aluminium alloy was investigated. Electron back scatter diffraction (EBSD) revealed differences in grain size and misorientation angles between tubes processed with stationary and rotating mandrel. Kernel average misorientation maps obtained from EBSD experiments and ASTAR analysis performed in transmission electron microscopy proved differences in the dislocation density and arrangement. The tube processed using a stationary mandrel showed a recovered microstructure with elongated grains separated by low-angle grain boundaries into subgrains. The microstructure of the tube processed with a rotating mandrel was dynamically recrystallized with the grain size in submicrometer range. Vickers microhardness measurements revealed only a 40% HV increase in the sample prepared using stationary mandrel as compared with the initial billet. The mandrel rotation resulted in a much higher HV increase up to 200% as a result of substantial grain refinement.

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“…Other SPD techniques were created by modification of HPT to exploit the high hydrostatic pressure during straining. The methods named tube high-pressure shearing (t-HPS) [ 9 , 10 ] or high pressure tube twisting (HPTT) [ 11 , 12 ] both apply large hydrostatic pressure on the tubular sample placed between an inner and outer mandrel. The external torque through the rotation of one or both mandrels then lead to shear deformation resulting in strengthening through grain refinement in the tube wall.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution of a 3003 Based Aluminium Alloy during the CSET Process

et al. 2021

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A new severe plastic deformation technique, known as the complex shearing of extruded tube (CSET), was applied to a 3003 based model aluminium alloy. This technique, consisting of a combination of extrusion and two consecutive Equal Chanel Angular Pressing (ECAP) passes accompanied with concurrent torsional straining, is capable to produce a fine-grained tubular sample directly from a bulk metallic cylinder in one forming operation. In the present paper, the microstructural development of the alloy during partial processes of CSET was studied in detail using light microscopy, electron backscatter diffraction, and transmission electron microscopy. It was found that CSET technique refines the grain size down to 0.4 µm and, consequently, increases the microhardness from the initial value of 40 HV to the final value of 120 HV. The contributions of partial processes of CSET to the total strain were estimated.

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Investigation on the Strain Distribution in Tube High-Pressure Shearing

Cited by 6 publications

References 29 publications

Evidence for a stable single component sharp texture in high purity aluminum during tube high-pressure shearing at room temperature

Evidence for a stable single component sharp texture in high purity aluminum during tube high-pressure shearing at room temperature

The Role of Mandrel Rotation during CSET Processing Demonstrated on a 3003 Aluminium Alloy

Microstructural Evolution of a 3003 Based Aluminium Alloy during the CSET Process

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