Paper Title:
Formation of High-Angle Grain Boundaries in Iron upon Cold Deformation by Equal-Channel Angular Pressing
  Abstract

At present, the possibility of the formation of high-angle grain boundaries upon severe cold deformation, in particular, equal-channel angular (ECA) pressing is reliably proved. The structure formation upon multi-cycle ECA pressing substantially depends on the route determining the shear plane in the sample upon repeated passes. The route is defined by the rotation of the sample around its axis upon the multi-cycle ECA pressing. There are four main routes: route A, in which the sample is deformed by many passes without any rotations; route Ba, in which the sample is rotated by ± 90°; route Bc, in which the sample is sequentially rotated in the same direction by 90°and route C, in which the sample is rotated by 180° about its axis before each subsequent pass. By the methods of SEM, TEM and EBSD analysis it was shown that the fraction of high-angle boundaries in a-Fe upon cold ECA pressing with an angle of 90° between the channels and N=4 depends on the deformation route and increases according to the route sequence: Ba-C-Bc.

  Info
Periodical
Materials Science Forum (Volumes 467-470)
Edited by
B. Bacroix, J.H. Driver, R. Le Gall, Cl. Maurice, R. Penelle, H. Réglé and L. Tabourot
Pages
1277-1282
DOI
10.4028/www.scientific.net/MSF.467-470.1277
Citation
S. V. Dobatkin, V.I. Kopylov, R. Pippan, O.V. Vasil'eva, "Formation of High-Angle Grain Boundaries in Iron upon Cold Deformation by Equal-Channel Angular Pressing", Materials Science Forum, Vols. 467-470, pp. 1277-1282, 2004
Online since
October 2004
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jing Yi Cui, Liquan Guo, Ju Sheng Ma
Abstract:Adding nano-particles with high refractive index can greatly improve the optical properties of the PMMA-based composites, which were...
997
Authors: Lin Wang, Jia Xiang Zhong, Bin Ma, Shu Jun Wang
Abstract:In this paper, the application of new functional nano-material films prayed on transmission display screen is studied. Optical properties,...
348
Authors: Jun Zhou, Jian Feng Li, Jie Sun
Abstract:In this paper, the micro-scale machining characteristics of a non-ferrous structural alloy, aluminum 7050-T7451 is investigated through a...
657
Authors: Xiao Hui Gao, Yu Feng Li, Zhou Mao Yu
Materials Engineering
Abstract:Versatate-fluorocarbon emulsion with core-shell structure was synthesized by seeded emulsion polymerization using versatate, organic fluorine...
2055
Authors: Qian Juan Zhao, Ya Nan Jiao
Chapter 1: Textile Science and Technology
Abstract:The tensile property of two-dimensional (2-D) braided cored ropes with high-performance is investigated and found that braiding angle has an...
210