Characterization of Bimetallic Interface in Cu–Al and Ni–Cu Rods Cold Welded by Equal Channel Angular Pressing

In the present work a comparative study was carried out on consolidation of Al-5083 alloy and 5wt. % nanoyttrium oxide powders by Equal channel angular pressing (ECAP). The powders were milled for 10, 15 and 20 hrs using planetary ball mill under optimized process parameters. The milled powders were characterised by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Milled powders exhibit nanocrystalline single phase after 10hrs. The crystallite size after 20 hr of milling, alloy and composite powders were found to be 23nm and 57nm respectively. The 20hr milled alloy and composite powder was consolidated by equal channel angular pressing (ECAP) through 90o die channel angle using route-A for two passes with and without back pressure. Density of ECAPed samples were measured using Archimedes principle. The highest density was found as 96% for the alloy after 2 passes without backpressure and sintering and 94% for the composite after 2 passes with back pressure and sintering.

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Mechanical and Microstructural Characterization of Al-6082 Ultrafine-Grained Alloys Processed by ECAP Combined with Traditional Forming Techniques

Materials Science Forum ◽

10.4028/www.scientific.net/msf.589.111 ◽

2008 ◽

Vol 589 ◽

pp. 111-116 ◽

Cited By ~ 5

Author(s):

György Krállics ◽

Arpad Fodor ◽

Jenő Gubicza ◽

Z. Fogarassy

Keyword(s):

Mechanical Properties ◽

Equal Channel Angular Pressing ◽

Microstructural Characterization ◽

Shape Rolling ◽

Rotary Forging ◽

Angular Pressing ◽

Ultrafine Grained ◽

Forming Methods

An Al-6082 alloy was subjected to equal channel angular pressing (ECAP) and subsequently to conventional forming methods such as shape rolling and rotary forging. The effect of different deformation techniques on the microstructure and the mechanical properties was studied. It was found that the shape rolling and rotary forging increased further the strength of ECAP-processed samples and induced a loss of ductility.

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Characterization of creep properties and creep textures in pure aluminum processed by equal-channel angular pressing

Acta Materialia ◽

10.1016/j.actamat.2008.01.023 ◽

2008 ◽

Vol 56 (10) ◽

pp. 2307-2317 ◽

Cited By ~ 35

Author(s):

Megumi Kawasaki ◽

Irene J. Beyerlein ◽

Sven C. Vogel ◽

Terence G. Langdon

Keyword(s):

Equal Channel Angular Pressing ◽

Pure Aluminum ◽

Creep Properties ◽

Angular Pressing

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Characterization of microstructure and deformation texture during equal channel Angular pressing of Al–Zn–Mg–Cu alloy

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2013.05.182 ◽

2013 ◽

Vol 576 ◽

pp. 350-357 ◽

Cited By ~ 34

Author(s):

M.H. Shaeri ◽

M.T. Salehi ◽

S.H. Seyyedein ◽

M.R. Abutalebi ◽

J.K. Park

Keyword(s):

Equal Channel Angular Pressing ◽

Deformation Texture ◽

Angular Pressing ◽

Cu Alloy

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Characterization of Ultrafine Grain Structure in 5083 Al Alloy Made by Equal Channel Angular Pressing

Microscopy and Microanalysis ◽

10.1017/s1431927604881480 ◽

2004 ◽

Vol 10 (S02) ◽

pp. 564-565

Author(s):

Yong Jun Oh ◽

Yong Shin Kim ◽

Kyung Tae Park ◽

Kyu Hwan Oh ◽

Dong Hyuk Shin

Keyword(s):

Equal Channel Angular Pressing ◽

Grain Structure ◽

Ultrafine Grain ◽

Al Alloy ◽

Angular Pressing ◽

Ultrafine Grain Structure ◽

5083 Al Alloy

Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.

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Characterization of microstructure in high strength Mg96Y3Zn1 alloy processed by extrusion and equal channel angular pressing

Journal of Rare Earths ◽

10.1016/s1002-0721(10)60564-9 ◽

2011 ◽

Vol 29 (9) ◽

pp. 902-906 ◽

Cited By ~ 10

Author(s):

Bin CHEN ◽

Chen LU ◽

Dongliang LIN ◽

Xiaoqin ZENG

Keyword(s):

Equal Channel Angular Pressing ◽

High Strength ◽

Angular Pressing

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Quantitative Characterization of Microstructure in Copper Processed by Equal-Channel Angular Pressing

Materials Science Forum ◽

10.4028/www.scientific.net/msf.667-669.235 ◽

2010 ◽

Vol 667-669 ◽

pp. 235-240 ◽

Cited By ~ 1

Author(s):

Petr Král ◽

Jiří Dvořák ◽

Marie Kvapilová ◽

Milan Svoboda ◽

Viktor Beneš ◽

...

Keyword(s):

Equal Channel Angular Pressing ◽

Pure Copper ◽

Detailed Examination ◽

Coarse Grained ◽

Quantitative Characterization ◽

Unusual Structure ◽

Angular Pressing ◽

Mean Grain Size ◽

The Mean

Experiments were conducted on extremely coarse-grained pure copper to evaluate the effect of equal-channel angular pressing (ECAP) on microstructure evolution in the as-pressed state and after creep exposure using various stereological methods. The microstructure formed by severe plastic deformation is an unusual structure which can be hardly characterized only by the mean grain size especially after low number of ECAP passes. The purpose of this paper is a detailed examination of (sub)boundaries and grain boundaries in the microstructures of the pressed material. The inhomogeneity of deformed microstructures is also evaluated. The detailed description of ECAP microstructures should contribute to the better understanding of mechanical properties of the pressed materials.

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