[PDF] Top 20 Strength Enhancement and Deformation Behavior of Gold after Equal Channel Angular Pressing

... K24 gold, dilute solid solution Au-1 at%Ag and the K18 gold alloys such as Au-25Ag (mass%) – the single phase solid solution and ...the enhancement of materials properties when different strengthening ... See full document

... by equal-channel angular ...tensile strength increased as temperature decreased and strain rate ...of deformation increased linearly with the increase in ... See full document

... in equal channels in five passes in a two-part die of tool steel H13 with two identical perpendicular channels of 10 x 10 mm forming and a radius of the 5 mm channels (R ≈ ...The channel and the specimen ... See full document

... of deformation processing, there is observed an additional increase in the microhardness and strength of ultrafine-grained materials, produced by SPD at the first stage of ...the deformation type of ... See full document

... A commercial FEM code Abaqus/Explicit was used to perform the numerical simulations. An axisymmetric model was employed, where the geometrical dimensions and mechanical properties of the specimens were identical to those ... See full document

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

... Al after 4 passes shows the best performance against corrosion in AGS ...1050 after 10 days immersion in AGS ...plastic deformation and increasing the dislocation ... See full document

... Equal channel angular pressing (ECAP) is a viable forming procedure to extrude material by use of specially designed channel dies without a substantial change in geometry and to make an ... See full document

... plastic deformation (SPD) methods such as high-pressure torsion (HPT), accumulative roll bonding (ARB), equal-channel angular pressing (ECAP), multiple forging (MF), twist extrusion ... See full document

... indentation behavior using 2 mm diameter hemispherical ball ...high strength in 372 K sample, and decreasing strength trend with increasing ECAP processing ...plastic deformation proc- essing ... See full document

... ABSTRACT: Equal Channel Angular pressing is a unique Severe Plastic Deformation Process for producing ultra-fine grain sized ...a channel angle of 110 o in a 100 ton hydraulic ... See full document

... properties. Equal channel angular pressing (ECAP), which primarily introduced by Segal is one of the severe plastic deformation methods for developing ultrafine grained materials in ... See full document

... ultrahigh strength, no information is, at present, available on its application as a post work- ing process of PM processed discontinuous ...plastic deformation as a post working process of PM processed ... See full document

... to the processing of titanium (and alloys) because ECAP temperature is prominently lower than that (600–1000C) of the conventional powder metallurgy (e.g., sintering) and in- got metallurgy (e.g., forging and/or ... See full document

... the deformation conditions of the deformed ...[4]. Deformation is, of course, a continuous process and at any particular point in a deforming body, the state of strain changes from one instant to the next ... See full document

... coefficient and n is the cyclic strain hardening exponent. Applying eq. (1) to the experimental results of the UFG Cu, the values of k ¼ 1060 MPa and n ¼ 0:168 were received. Similarly, the values of k ¼ 376 MPa and n ¼ ... See full document

... Zn after ECAP and ...superplastic behavior of different materials by measuring the SRS index particularly when the material is only available as small test pieces such as those usually obtained by severe ... See full document

... in strength, but often the price is an appreciable loss of electrical and thermal ...plastic deformation in achieving a balance between the required properties, investigations on the mechanical properties, ... See full document

... material behavior) deformation is by simple shear in a narrow zone along the die intersection ...this behavior arise when these conditions are not ...case deformation takes place in a much ... See full document

... Figure 1 shows an as-ECAP microstructure of the Al– 3%Mg–0.2%Fe alloy and a selected area electron diffraction (SAED) pattern taken from a region of 6.2 µm in diameter. The SAED pattern consists of many diffracted beams ... See full document