&lt;i&gt;In-Situ&lt;/i&gt; Study on Deformation Behavior of ZK60 Alloy Processed by Cyclic Extrusion and Compression

Lin, Jianqun; Wang, Qing; Ren, Weijie; Wang, Qudong; Ma, Lifeng

doi:10.2320/matertrans.mc201405

Mater. Trans.

2014

DOI: 10.2320/matertrans.mc201405

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

Jianqun Lin

Qing Wang

Weijie Ren

et al.

Abstract: 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… Show more

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Critical Fracture Behavior of a Cu/Al Composite Laminate via the Observation of Scanning Electron Microscope

Zhao

Liu

2015

Mater. Trans.

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In situ fracture study of a Cu/Al composite laminate was discussed via the observation of scanning electron microscope (SEM). The experimental test was carried out by a modified miniature tensile device. With the aid of the SEM's sample stage and a wedge block, the profile morphology of the specimen was observed. The substrate layer (1060 aluminum) and the plate layer (C11000 copper) of the specimen presented asynchronous fracture behaviors. Under a relative large strain, a mass of micro voids, cracks and connections of voids and cracks were observed in the substrate layer, accompanied with some separated copper oxide and aluminum oxide flakes. Micro cracks were also observed in the plate layer and the overall morphology of the plate layer was relatively smooth and flat. When the tensile strain increased to 0.26, the initial fracture position firstly occurred at the plate layer, and the fracture process gradually spread from the plate layer to the substrate layer. In addition, the fracture modes of the substrate layer and the plate layer mainly manifested as microvoid coalescence fracture and pure shear fracture, respectively.

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Critical Fracture Behavior of a Cu/Al Composite Laminate via the Observation of Scanning Electron Microscope

Zhao

Liu

2015

Mater. Trans.

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Deformation and Fracture Characterization of an Mg-Sn-Ca Alloy Using 3D Processing Maps

Zhi

Lei

et al. 2023

Metals

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The deformation and fracture characterization of an Mg−2Sn−1Ca alloy were studied through uniaxial isothermal compression tests. The flow stress curves, the efficiency of power dissipation, the instability parameter and the fracture behavior of an Mg−2Sn−1Ca alloy under the condition of various hot working parameters were investigated according to the experimental data. Processing maps were established by superimposing the instability map over the power dissipation map. It was found that flow stress reduces with increases in the deformation temperature and decreases in the strain rate. The processing of Mg−2Sn−1Ca alloys should avoid the instability region in which the conditions are high strain under high temperature and low strain under low temperature. At 473 K or a high strain rate, unidirectional cracks and fish scale cracks can be produced, and cracks can be avoided under the optimum processing area of 623–723 K/0.001–0.1 s−1.

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

Cited by 2 publications

References 20 publications

Critical Fracture Behavior of a Cu/Al Composite Laminate via the Observation of Scanning Electron Microscope

Critical Fracture Behavior of a Cu/Al Composite Laminate via the Observation of Scanning Electron Microscope

Deformation and Fracture Characterization of an Mg-Sn-Ca Alloy Using 3D Processing Maps

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