Network-shaped fine-grained microstructure and high ductility of magnesium alloy fabricated by cyclic extrusion compression

Chen, Y.J.; Wang, Q.D.; Roven, Hans Jørgen; Liu, M.P.; Karlsen, Morten; Yu, Yandong; Hjelen, J.

doi:10.1016/j.scriptamat.2007.09.058

Cited by 79 publications

(31 citation statements)

References 12 publications

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“…The fraction of HAGBs is low relative to other UFG materials processed by SPD, for example Mg alloys [22]. After passing through the shear material passes through the shear plane, points B and C, which indicates that dislocation slip is the dominant deformation mechanism during 3 and 4 ECAP passes.…”

mentioning

confidence: 90%

Microstructure evolution of commercial pure titanium during equal channel angular pressing

Chen

Walmsley

et al. 2010

Materials Science and Engineering: A

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confidence: 90%

Microstructure evolution of commercial pure titanium during equal channel angular pressing

Chen

Walmsley

et al. 2010

Materials Science and Engineering: A

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“…These studies mainly focused on the AZ type Mg alloys [3][4][5]. Conventional methods of SPD processing include ECAE, high-pressure torsion (HPT) and cyclic extrusion and compression (CEC) [8][9][10][11][12]. As a kind of continuous SPD processing, CEC seems to be more adaptable for industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and enhanced mechanical properties of an Mg–10Gd–2Y–0.5Zr alloy processed by cyclic extrusion and compression

Tao

Wang

Lin

et al. 2011

Materials Science and Engineering: A

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The evolution of microstructure and texture of an extruded GW102K Mg alloy processed by cyclic extrusion and compression (CEC) at 450 °C were investigated. Tensile tests were performed at room temperature and strain rate 5 × 10 −3 s −1 . The results show that the microstructure was effectively refined, and the initial fiber texture became disintegrated and developed a new texture after 14 CEC passes. It was found that the strength and ductility were simultaneously increased as compared with the as-extruded alloy. In particular, the elongation and yield strength were related in a line relationship having a positive slope. As the texture changed and texture intensity decreased, substantial grain refinement was observed. The hard second-phase particles were considered to be responsible for the uncommon properties of CEC processed GW102K alloy.

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“…2,7,8) In order to examine the effects of CEC deformation on the plastic deformation and fracture mechanisms of the ZK60 alloy, the changes in the surface morphology during tensile plastic deformation is observed. Figure 4 shows the microstructure evolution of the surface morphologies of the as-extruded ZK60 alloy during in-situ tensile testing.…”

Section: Resultsmentioning

confidence: 99%

“…It should be the basal sliding, which is the dominant slip system for magnesium alloy at room temperature. 10) In some hard orientation grains, the basal slip is difficult to be activated due to the low Schmid factor, 8) for instance in grain A (Fig. 4(b)).…”

Section: Resultsmentioning

confidence: 99%

“…As a kind of continuous SPD technique, cyclic extrusion and compression (CEC) is very suitable to refine grains of hard-deformation metals because the materials are imposed by three-dimensional compression stress during the CEC processing. 7,8) Previous studies on the CEC processed Mg alloys revealed that the microstructure was effectively refined and the room temperature ductility was significantly enhanced by CEC processing.…”

Section: Introductionmentioning

confidence: 99%

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<i>In-Situ</i> Study on Deformation Behavior of ZK60 Alloy Processed by Cyclic Extrusion and Compression

et al. 2014

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The effects of cyclic extrusion and compression (CEC) on the deformation behavior and failure of ZK60 alloy were examined using in-situ scanning electron microscope (SEM) uniaxial tensile testing at room temperature. Fracture surface was analyzed by SEM. Result shows that the tensile elongation of the extruded ZK60 alloy is obviously increased by CEC deformation. The change in fracture modes has been attributed to the suppression of twinning and the activation of non-basal slips due to the grain refinement and texture modification induced by CEC deformation.

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Network-shaped fine-grained microstructure and high ductility of magnesium alloy fabricated by cyclic extrusion compression

Cited by 79 publications

References 12 publications

Microstructure evolution of commercial pure titanium during equal channel angular pressing

Microstructure evolution of commercial pure titanium during equal channel angular pressing

Microstructure and enhanced mechanical properties of an Mg–10Gd–2Y–0.5Zr alloy processed by cyclic extrusion and compression

<i>In-Situ</i> Study on Deformation Behavior of ZK60 Alloy Processed by Cyclic Extrusion and Compression

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