Significance of Microdefects Induced by ECAP in Aluminium, Al-0.2%Sc Alloy and Copper

2007 ◽  
Vol 567-568 ◽  
pp. 93-96 ◽  
Author(s):  
Vladimir I. Betekhtin ◽  
Andrey G. Kadomtsev ◽  
Petr Král ◽  
Jiří Dvořák ◽  
Milan Svoboda ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Equal Channel Angular Pressing ◽  
Pure Aluminium ◽  
Creep Properties ◽  
Angular Pressing

This paper deals with an experimental investigation of the effect of various microdefects induced by equal-channel angular pressing (ECAP) on mechanical and creep properties of ultrafinegrained pure aluminium, an Al-0.2%Sc alloy and copper.

Effect of Equal-Channel Angular Pressing (ECAP) on Creep in Aluminium Alloys

2007 ◽  
Vol 539-543 ◽  
pp. 2904-2909 ◽  
Author(s):  
Vàclav Sklenička ◽  
Jiří Dvořák ◽  
Marie Kvapilová ◽  
Milan Svoboda ◽  
Petr Král ◽  
...  
Keyword(s):  
Equal Channel Angular Pressing ◽  
Aluminium Alloys ◽  
Creep Resistance ◽  
Room Temperature ◽  
Creep Behaviour ◽  
Coarse Grained ◽  
Pure Aluminium ◽  
Creep Tests ◽  
Angular Pressing ◽  
Compression Creep

This paper examines the effect of equal-channel angular pressing (ECAP) on creep behaviour of pure aluminium, binary Al-0.2wt.%Sc alloy and ternary Al-3wt.%Mg-0.2wt.%Sc alloy. The ECAP was conducted at room temperature with a die that had a 90° angle between the channels and 8 repetitive ECAP passes followed route BC. Constant stress compression creep tests were performed at 473 K and stresses ranging between 16 to 80 MPa on ECAP materials and, for comparison purposes, on the initial coarse-grained materials. The results showed that the creep resistance of the ECAP processed Al-Sc and Al-Mg-Sc alloys was markedly deteriorated with respect to unpressed coarse-grained materials.

scholarly journals PERUBAHAN NILAI KEKERASAN DAN KONDUKTIVITAS LISTRIK ALUMINIUM AKIBAT PROSES EQUAL CHANNEL ANGULAR PRESSING (ECAP)

ROTASI ◽  
2014 ◽  
Vol 16 (4) ◽  
pp. 41
Author(s):  
Rusnaldy Rusnaldy ◽  
Norman Iskandar ◽  
Muhammad Khairul Rais ◽  
Wisnu Tri Erlangga
Keyword(s):  
Electrical Conductivity ◽  
Plastic Deformation ◽  
Equal Channel Angular Pressing ◽  
Hardness Test ◽  
Hardness Measurement ◽  
Optical Microscope ◽  
Pure Aluminium ◽  
Angular Pressing ◽  
Ecap Process ◽  
Number Of Passes

In current study, Equal Channel Angular Pressing (ECAP) process was applied to pure aluminium rod. The effect of the number of passes on hardness and electrical conductivity ECAP samples was investigated. The dimensions of ECAP die for 12 mmm diameter workpieces are designed with intersect angle of 120o. The experiments were carried out by using samples cut from an ingot and a rod and machined to a size of 12 mm in diameter and 50 mm in length. The workpiece was pressed into the ECAP die up to 7 passes at room temperature.After deformation, all samples were subjected to a hardness test, an electrical conductivity test and for optical microscope study. The hardness measurement of the ECAP samples suggested that enhanced hardness would be obtained by repeating ECAP process.Increasing the electrical conductivity of the ECAP samples indicatesthat there is no dislocation formation due to increasing plastic deformation in ECAP process

scholarly journals Simulation and Experimental Investigation for the Homogeneity of Ti49.2Ni50.8 Alloy Processed by Equal Channel Angular Pressing

Metals ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 45 ◽  
Author(s):  
Diantao Zhang ◽  
Mohamed Osman ◽  
Li Li ◽  
Yufeng Zheng ◽  
Yunxiang Tong
Keyword(s):  
Experimental Investigation ◽  
Equal Channel Angular Pressing ◽  
Angular Pressing

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

2008 ◽  
Vol 56 (10) ◽  
pp. 2307-2317 ◽  
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

Creep processes in pure aluminium processed by equal-channel angular pressing

2005 ◽  
Vol 410-411 ◽  
pp. 408-412 ◽  
Author(s):  
V. Sklenicka ◽  
J. Dvorak ◽  
P. Kral ◽  
Z. Stonawska ◽  
M. Svoboda
Keyword(s):  
Equal Channel Angular Pressing ◽  
Pure Aluminium ◽  
Angular Pressing

Inhomogeneity of Microstructure and Creep of ECAP Aluminium

2006 ◽  
Vol 503-504 ◽  
pp. 245-250 ◽  
Author(s):  
Vàclav Sklenička ◽  
Petr Král ◽  
L. Ilucová ◽  
Ivan Saxl ◽  
Jiří Dvořák ◽  
...  
Keyword(s):  
Equal Channel Angular Pressing ◽  
High Purity ◽  
Creep Behaviour ◽  
Pure Aluminium ◽  
Mesoscopic Scale ◽  
Angular Pressing

High purity (99.99%) pure aluminium processed by equal channel angular pressing (ECAP) was examined in terms of the ECAP microstructure inhomogeneity and its creep behaviour. The results indicate that an inhomogeneity of the ECAP microstructure in mesoscopic scale may influence the creep behaviour of the pressed material.

Sign in / Sign up

Export Citation Format

Share Document