Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing

Salimyanfard, Farideh; Toroghinejad, Mohammad Reza; Ashrafizadeh, F.; Hoseini, Majid; Szpunar, Jerzy A.

doi:10.1016/j.matdes.2012.08.002

Cited by 46 publications

(19 citation statements)

References 27 publications

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“…There are numerous reports documenting the effect of SPD processing on materials such as pure copper [12][13][14][15][16][17][18][19][20] and pure nickel [21][22][23] but less information is currently available for alloys of these materials. At the present time, limited reports are available describing the SPD processing of various Cu-Ni-Si alloys.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and texture evolution in a Cu–Ni–Si alloy processed by equal-channel angular pressing

Larbi

Azzeddine

Baudin

et al. 2015

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Microstructure and texture evolution in a Cu–Ni–Si alloy processed by equal-channel angular pressing

Larbi

Azzeddine

Baudin

et al. 2015

Journal of Alloys and Compounds

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“…After one pass, the microstructures in bulk billet consist of fine but elongated subgrains mostly in the top and the middle while the microstructure in stacked sheets was refined only in the top and some equiaxed grains can be observed in the middle and in the bottom. In this context, authors have assumed that equiaxed grains, already formed in f.c.c materials after a large deformation at low or at room temperatures, were probably formed by a continuous recrystallization process[35][36][37]. shows the evolution of the average grain size as a function of the pass number for the different samples.…”

mentioning

confidence: 99%

Study of the microstructure and texture heterogeneities of Fe–48wt%Ni alloy severely deformed by equal channel angular pressing

et al. 2018

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A Fe-48wt%Ni alloy was processed by severe plastic deformation using equal channel angular pressing process. A stacking of 9 sheets was introduced and pressed up to two passes into die with an inner angles of Φ=90º and outer arc of curvature ψ= 17° at room temperature following route A. The same material in bulk form was also ECAPed up to one pass. The microstructure and the texture were investigated by means of electron backscattered diffraction and X-ray diffraction, respectively. To evaluate the mechanical response, Vickers microhardness was carried out. The given analyses concern the asreceived sample, the peripheral and the central plates of the pressed stacks and the upper, the middle and the lower parts of the pressed bulk material. The deformation was heterogeneous and variations in texture and microstructure, resulting from different efficiencies in the shearing process, were locally noted. For the stacks samples, the microstructure evolved from equiaxed grains of 9 μm with high fraction of high-angle grain boundaries (around 90%) to a heterogeneous fine grain structure with an average grain size of 3 m after two passes. On the contrary, for the bulk sample, the evolution was 2 to a banded structure after one pass. Results of mechanical property show that microhardness increased significantly from 147 Hv before deformation to mean values of 244 (after one pass) and 235 Hv (after two passes) for the bulk and stacked samples, respectively. The Hall-Petch effect and dislocation density were evaluated as the most responsible in material strengthening.

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“…For face‐centered cubic (FCC) metals, the ideal slip systems in a simple shear model are those with a slip direction parallel to the shear direction, which corresponds to the {111}<uvw> and {hkl}<110> slip systems. The {111} pole figure projected onto the HPT disk shows the main ideal slip systems as illustrated in Figure b . The corresponding Miller indices for the main ideal orientation components are shown in Table …”

Section: Resultsmentioning

confidence: 99%

Microstructural Evolution and Micro‐Compression in High‐Purity Copper Processed by High‐Pressure Torsion

Wang

et al. 2015

Adv Eng Mater

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Pure copper is subjected to severe plastic deformation at room temperature using quasi-constrained high-pressure torsion through 1/4 to 10 turns. The evolution of the microstructure is monitored using X-ray diffraction and electron backscatter diffraction. Specimens are analyzed both before and after micro-compression of %50%. The results show that after 10 turns there is a homogeneous ultrafinegrained (UFG) microstructure with an average grain size of %250 nm and with a simple shear texture.The micro-compression testing shows that UFG specimens exhibit a better surface quality after compression thereby demonstrating an excellent potential for using UFG copper in micro-forming.

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Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing

Cited by 46 publications

References 27 publications

Microstructure and texture evolution in a Cu–Ni–Si alloy processed by equal-channel angular pressing

Microstructure and texture evolution in a Cu–Ni–Si alloy processed by equal-channel angular pressing

Study of the microstructure and texture heterogeneities of Fe–48wt%Ni alloy severely deformed by equal channel angular pressing

Microstructural Evolution and Micro‐Compression in High‐Purity Copper Processed by High‐Pressure Torsion

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