Paper Title:
Geometric Misorientation Changes in Aluminium Subjected to Strain Path Change Test
  Abstract

Specimens of commercial purity aluminum were subjected to a strain path change test during high temperature deformation. Specimens were deformed at 4000 C and strain rate of 0.1 s-1 up to various strains of 0.2, 0.5, and 1. Then in a strain path change test, specimens were first deformed to a strain of 0.5, and subsequently deformed to strains of 0.2 and 0. In order to further the understanding of the deformation mechanisms in aluminum, the subgrain sizes and misorientations were characterized in detail by comparative studies using optical microscopy in polarized light (POM), orientation imaging microscopy (OIM/SEM) and transmission electron microscopy (TEM). The analysis revealed that while subgrain size is relatively insensitive to strain, overall misorientations increased with increasing strain. These analyses confirmed a strong bimodal distribution of boundaries during deformation coupled with a low fraction of medium angle boundaries. The results contribute to the understanding that dynamic recovery in aluminum maintains subboundaries with low misorientation but as grains elongate and more subgrain become adjacent to grain boundaries the fraction of high angle boundaries rises.

  Info
Periodical
Materials Science Forum (Volumes 519-521)
Edited by
W.J. Poole, M.A. Wells and D.J. Lloyd
Pages
1659-1664
DOI
10.4028/www.scientific.net/MSF.519-521.1659
Citation
G. Avramovic-Cingara, H.J. McQueen, "Geometric Misorientation Changes in Aluminium Subjected to Strain Path Change Test", Materials Science Forum, Vols. 519-521, pp. 1659-1664, 2006
Online since
July 2006
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: Hossein Beladi, Pavel Cizek, Peter D. Hodgson
Abstract:An austenitic Ni-30%Fe model alloy was employed to investigate the texture and substructure development within the deformed matrix and...
2835
Authors: Xin Yun Wang, Hui E Hu, Ju Chen Xia
Abstract:Compression tests of 7050 aluminum alloy have been conducted at different temperatures (340, 380, 420, and 460 °C) with strain rate of 0.1...
305
Authors: Huie Hu, Xiao Dong Kong, Zhen Hai Shao
Chapter 2: Fundamental Materials Science
Abstract:Soften behavior of 7050 aluminum alloy was investigated by high temperature compression tests conducted at 460 °C with different strain rates...
161
Authors: Pavel Cizek, Hossein Beladi, Peter D. Hodgson
Monday
Abstract:The substructure and crystallographic texture characteristics of both the deformed matrix and dynamically recrystallized (DRX) grains were...
180
Authors: Niels Hansen
Tuesday
Abstract:Metals deformed to high and ultrahigh strains are characterized by a nanoscale microstructure, a large fraction of high angle boundaries and...
251