RETRACTED: Nanostructure and mechanical properties of 0–7 strained aluminum by CGP: XRD, TEM and tensile test

Hosseini, E.; Kazeminezhad, M.

doi:10.1016/j.msea.2009.07.028

Cited by 69 publications

(18 citation statements)

References 39 publications

(73 reference statements)

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“…The subgrains tend to be elongated same as previuos reports on ECAP [30,32]. The dislocation density inside the grains is very low in the sample processed through seven pass as can be seen in other SPD methods [29,30,32,38]. Many researchers [29,30,[32][33][34][35][36][37][39][40][41] mentioned that, by increasing in the number of passes, the dislocation density inside the sub-grains becomes saturated and then a significant reduction is observed inside the cells.…”

Section: Resultssupporting

confidence: 59%

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Mechanical properties and microstructural evolution during multi-pass ECAR of Al 1100–O alloy

et al. 2012

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Section: Resultssupporting

confidence: 59%

“…This reduction phenomenon can be seen in previously reported results [38,56,57]. This can be explicated by two reasons which are formation of micro-cracks [57] and flow softening [38].…”

Section: Tensile Behaviorsupporting

confidence: 69%

Mechanical properties and microstructural evolution during multi-pass ECAR of Al 1100–O alloy

et al. 2012

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“…Generally, this strengthening is introduced by work hardening and grain refinement. Previous papers proposed flow softening and microcracking as softening mechanisms [8][9][10]. Figure 5a and b illustrates the microstructures of pressed copper after one and three passes, respectively.…”

Section: Processing Efficiencymentioning

confidence: 97%

“…The grain refinement and work hardening lead to the strength increase of materials during the initial stage of CGP, while the mechanisms of micro-cracking and flow softening contribute to the decrease at the later passes [10]. In this work, the optimum tensile properties of CGP pure Ni are obtained by the die design in Scheme 2.…”

Section: Materials Preparation and Cgp Experimentsmentioning

confidence: 99%

Numerical and Experimental Study on Constrained Groove Pressing

Guan¹,

Wang²

2017

Severe Plastic Deformation Techniques

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Constrained groove pressing (CGP) is a new severe plastic deformation method suitable for producing ultra-fine grained sheet metals. Based on Taguchi optimization method, the influence of processing parameters such as groove width, groove angle, friction coefficient and deformation rate on deformation homogeneity of constrained groove pressing (CGP) was studied numerically utilizing DEFORM-3D. A multi-pass CGP was carried out on 1060 commercially pure aluminium, copper and Ni sheets. Through a series of experimental research, the evolution of microstructure, tensile properties, forming load, and die parameters during the process was investigated.

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“…Furthermore, by considering that the experimental profile (βexp) is the convolution of the instrumental profile (βins) and the intrinsic profiles (β), the intrinsic profile can be attained by unfolding the experimental profile via the Gaussian assumption, as is represented by Equation (2) [22,23]. Moreover, using Equation (1), a line can be fitted by plotting βCosθ against Sinθ and the intercept gives the cell size.…”

Section: Microstructural Testingmentioning

confidence: 99%

Experimental Investigation of the Equal Channel Forward Extrusion Process

Ebrahimi

Djavanroodi

Tiji

et al. 2015

Metals

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Among all recognized severe plastic deformation techniques, a new method, called the equal channel forward extrusion process, has been experimentally studied. It has been shown that this method has similar characteristics to other severe plastic deformation methods, and the potential of this new method was examined on the mechanical properties of commercial pure aluminum. The results indicate that approximate 121%, 56%, and 84% enhancements, at the yield strength, ultimate tensile strength, and Vickers micro-hardness measurement are, respectively, achieved after the fourth pass, in comparison with the annealed condition. The results of drop weight impact test showed that the increment of 26% at the impact force, and also decreases of 32%, 15%, and 4% at the deflection, impulse, and absorbed energy, are respectively attained for the fourth pass when compared to the annealed condition. Furthermore, the electron backscatter diffraction examination revealed that the average grain size of the final pass is about 480 nm.

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RETRACTED: Nanostructure and mechanical properties of 0–7 strained aluminum by CGP: XRD, TEM and tensile test

Cited by 69 publications

References 39 publications

Mechanical properties and microstructural evolution during multi-pass ECAR of Al 1100–O alloy

Mechanical properties and microstructural evolution during multi-pass ECAR of Al 1100–O alloy

Numerical and Experimental Study on Constrained Groove Pressing

Experimental Investigation of the Equal Channel Forward Extrusion Process

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