[PDF] Top 20 ECAP at these two directions. The microstructural

... Figure 5a shows the Optical microscope image of the as- received copper. While the Optical microscope image of the material copper alloy subjected to ECAP technique at six passes and twelve passes respectively are ... See full document

... Incremental equal channel angular pressing (I-ECAP) is one of the continuous severe plastic deformation (SPD) processes. This paper presents the processing of commercial purity titanium (CP-Ti) using a double ... See full document

... The microstructural refinement after processing via ECAP was performed efficiently, starting from a structure with coarser granulometry and achieving a fine ...for microstructural refinement were the ... See full document

... 1 I NTRODUCTION Equal channel angular pressing (ECAP) is a prominent “Severe plastic deformation” (SPD) technique developed by V M Segal [1] for improving the mechanical properties and super plastic behavior with ... See full document

... mechanical, microstructural and physical ...by ECAP processing of pure copper including microstructural features, thermal stability, thermal conductivity and corrosion ... See full document

... the microstructural change and the variation of related mechanical properties with straining observed in pure Al are not affected significantly by the methods of SPD ... See full document

... the microstructural features such as grain refinement and high misorientation angle between the ...sound ECAP-FE process ...the ECAP process dictates the mechanical properties of the deformed ... See full document

... during ECAP were examined. A special focus was made on the effect of ECAP conditions on the distribution of SiC ...of ECAP as a post working process for manufacturing the discontinuous metal matrix ... See full document

... after ECAP of initially coarse-grained materials have confirmed this ...in ECAP, after reaching a minimum mean grain size for a given temperature, subsequent passes do not lead to further grain refinement but ... See full document

... Figure 3 shows instrumented indentation behavior using 2 mm diameter hemispherical ball indenter. The indenting curves are consistent with the hardness testing results; high strength in 372 K sample, and decreasing ... See full document

... the ECAP sample and Fig. 6(b) for the ECAP-annealed ...both ECAP sample and ECAP-annealed sample and the results are shown in ...because microstructural evolution and hardness variation ... See full document

... Microstructural characterization of specimen before and after ECAP was performed using Optical Microscope (OM). Specimens for optical microscopy (OM) were obtained by sectioning the processed samples ... See full document

... above, ECAP process at high temperature brought about a reduction in the accumulation efficiency of ...to ECAP process at elevated temperatures, it is desirable to lower the processing temperature of ... See full document

... after ECAP pressing to 6 passes is depicted in ...classify two main kinds of secondary phases in the alloy structure: a first series of particles containing Si and/or Si + Mg (dark phases), a second series ... See full document

... A square cross section billet of 5mm  5mm  12mm was considered as starting material. Mechanical properties of aluminum alloy AA6101 [9] was assigned to the deformable work piece. Since dies are manufactured from high ... See full document

... and the pattern directions, predominant this and 32 difference of in origin magnitude In these two figure visual f_ circle-hexagon diffuse content difference directions, space quency by [r] ... See full document

... The directions of the signals in the bearnformer output are slightly different from the true signal directions; this is due to two effects: 1 the maximum of sharpness determines the true[r] ... See full document

... vesttigation of material flow and damage prediction dur- ing Ex-ECAP process. For this reason, die and punch were assumed as rigid parts due to higher strength and remaining undeformed during process. Only half of ... See full document

... γ = cot(θ) = 2cot(Φ/2 + ψ/2) + ψ/sin(Φ/2 + ψ/2) (2) In the present pressing, the ECAP die had angles of Φ = 90° and ψ = 20°, and thus θ is calculated to be 28.7°, which is close to the macroscopic defor- mation ... See full document

... nal two passes produced an alloy with a sub- micron structure of ...However, two separate peaks in the (0001) pole fi gure are clearly visible in this case ... See full document