Anisotropic compressive properties of iron subjected to single-pass equal-channel angular pressing

Han, Wei‐Zhong; Zhang, Z. F.; Sheng, Wu; Li, S. X.; Wang, Y. D.

doi:10.1080/09500830600847095

Cited by 23 publications

(5 citation statements)

References 19 publications

(20 reference statements)

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“…[7,8]. This has already been detected for ARMCO iron [9,10], commercial purity Copper [11][12][13], Titanium [14] and Aluminum alloys 1100 [4], 6060 [15], Al -5% Zr [16], Al-6061 and Al 7034 [7]. The present paper analyses the mechanical anisotropy of commercial purity Aluminum after ECAP processing.…”

Section: Introductionsupporting

confidence: 54%

Compressive and Shearing Mechanical Anisotropy of Aluminum after ECAP

Faria

Pedrosa

Figueiredo

et al. 2014

AMR

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Severe plastic deformation (SPD), where metals are deformed up to very high strain values, leads to a very small grain size and a high strength of the material. ECAP (Equal Channel Angular Pressing) is one of the SPD methods, and involves the extrusion of a metal billet through two intersecting channels with identical cross-section and forming an angle between them. The material undergoes shearing as it crosses from one channel to the other, but its external dimensions are not altered. Shearing occurs along a single plane, which may lead to anisotropy in the mechanical properties of the material after ECAP. Compression, tension and shearing tests along various directions in the as-processed specimens indicated the presence of mechanical anisotropy in ECAP processed aluminum.

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Section: Introductionsupporting

confidence: 54%

Compressive and Shearing Mechanical Anisotropy of Aluminum after ECAP

Faria

Pedrosa

Figueiredo

et al. 2014

AMR

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“…[40][41][42][43] For instance, Alexander and Beyerlein [44] reported on the anisotropy of the mechanical properties of high-purity copper processed by ECAP. The authors showed that the ECAP-processed material was mechanically anisotropic, with a larger compression strength along the transverse direction (using the standard notation for ECAP [45] ) than that along the other directions.…”

Section: Macroscopic Description Of the Mechanical Behaviormentioning

confidence: 99%

Ultrafine-Grained Aluminum Processed by a Combination of Hot Isostatic Pressing and Dynamic Plastic Deformation: Microstructure and Mechanical Properties

Dirras

Chauveau

Abdul–Latif³

et al. 2011

Metall Mater Trans A

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Commercial-purity (99 wt pct), bulk, ultrafine-grained aluminum samples were produced by a two-step process that combines powder consolidation by hot isostatic pressing and dynamic plastic deformation. The compaction step yielded crystallographic texture-free specimens with an average grain size of approximately 2 lm. Then, some of the consolidated specimens were deformed dynamically at room temperature at an initial strain rate of 370 seconds À1 and up to an axial strain of e = 1.25. After dynamic plastic deformation, the grain size and the dislocation density were approximately 500 nm and 10 14 m À2 , respectively. The yield strength was approximately 77 MPa for the as-consolidated sample, which increased up to approximately 103 MPa and 120 MPa for the impacted samples along the axial and radial directions, respectively. The compression stress as a function of strain showed saturation behavior for the axially deformed samples, whereas the specimens deformed along the radial direction exhibited significant strain softening. The latter behavior is explained mainly by the weakening of the crystallographic texture that occurred because of the strain-path change along the radial direction.

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“…Therefore, it was difficult to machine tensile samples in three orthogonal directions in the mean time. However, compression test in orthogonal directions can be easily executed for magnesium alloy processed by ECAP technique and anisotropy was found in these works [17,[20][21][22]. The deformation mechanism of compression is different from that of tensile because of the asymmetry in compression and tension, which depends on the direction of straining [23,24], especially for magnesium alloy.…”

Section: Introductionmentioning

confidence: 99%