[PDF] Top 20 A Portrait of Copper Processed by Equal Channel Angular Pressing

... Another property which is very important for the applica- tion of copper as a connector is its thermal and electrical conductivity (which are correlated through the Wiedemann- Franz law). As it is crucial to ... See full document

... the angular channel but the distance between the peaks and valleys in the plot is low when compared to the first specimen which is also an indication of the extent to which Chevron cracks have propagated ... See full document

... as equal-channel angular pressing (ECAP), high- pressure torsion (HPT), accumulative roll-bonding (ARB) and multidirectional deformation (MDD) have been pro- posed as useful methods for ... See full document

... Pure Cu is the most important representative of electrical engineering materials because of its high electrical con- ductivity. However, a major limitation of pure Cu is that it has low strength and low ... See full document

... Figure 3 shows the SEM observed microstructure of the as-cast and deformed Al­20Sn (mass%) alloy samples. The as-cast sample (Fig. 3(a)) shows the typical microstructure of an immiscible alloy, as reported elsewhere. ... See full document

... Besides that, several method and technique are apply while carrying this research which are Equal-channel angular pressing (ECAP) and heat treatment. ECAP is a trustworthy method to achieve ... See full document

... Equal channel angular pressing (ECAP) process provides an efficient procedure for achieving ultrafine grained microstructures with excellent mechanical properties in metallic ... See full document

... incremental equal channel angular pressing ...were processed using different routes of I-ECAP at temperatures varying from 125 °C to 250 ...successfully processed at 200 °C, ... See full document

... The effective strain contour plots in Fig. 3 show the strain induced in the workpiece at the end of the deformation process. The maximum and minimum strain points induced in the workpiece are indicated by square and ... See full document

... Ultra fi ne-grained (UFG) pure copper of 280 nm grain size was prepared by equal-channel angular pressing. Tensile tests, strain-rate change tests and temperature change tests were ... See full document

... pure copper bicrystals on the initial crystallo- graphic orientation was examined in terms of slip geometry, grain boundary plane orientation and the shear plane of ... See full document

... It is generally accepted that if metallic materials are deformed at room temperature (RT), average sub-grain/cell size decreases with strain. Hence, plastic deformation processing can be a viable method for grain ... See full document

... However, the question of how, and to what extent a grain boundary can change its misorientation remains to be addressed since clarifying the question requires tracking of a specified grain boundary with well-defined ... See full document

... Commercial aluminium (Al) containing 2%mass­Si alloy was melted with Sn in order to achieve the nominal composition Al­2Si­xSn alloys (where x = 0, 4, 8 mass%). The ingots were machined into rod shape with cross section ... See full document

... Wang, Estrin and Zuberova evaluated the corrosion performance of AZ31 processed via Squeeze Casting (SC), Hot Rolling (HR) and equal channel angular pressing (ECAP) (Wang et al. They f[r] ... See full document

... The microstructural evolutions of metals and alloys subjected to low and medium plastic deformation have been discussed severally [14] [15]. The outcome of their studies is a model describing severely the deformed metals ... See full document

... of copper and shear {111}©112ª textures and their respective amount, evolved with the number of ECAP passes, as shown in ...rolling copper texture is predominant, thereafter, a weak shear {111}©112ª texture ... See full document

... alloys processed at different three temperatures of (a) 553 K, (b) 523 K and (c) 493 K after 2 passes at the common temperature of 553 ...alloy processed at the lower temperature reveals more homogeneous ... See full document

... Orientation images recorded using EBSD analysis are given in Fig. 3 from a recent study 8) This observation should help understand microstructural development with respect to the number of ECAP passes. It should be noted ... See full document

... Equal channel angular pressing (ECAP) is a severe plastic deformation (SPD) technique leading to re fi nement of the grain size of materials to submicron or even nano-size length ...SPD ... See full document