Paper Title:
Work- and Age-Hardening Behaviour of a Commercial AA7108 Aluminium Alloy
  Abstract

Understanding and prediction of the mechanical properties of aluminium alloys are of great importance with respect to e.g. strength requirements and forming operations. In the 7xxx alloying system several mechanisms influence the hardening behaviour of the alloys, e.g. particle size and distribution, dislocation density, and alloying elements in solid solution. This work is an experimental study of work- and age-hardening considering a commercial AA7108 alloy in the as-cast and homogenized condition. Tensile specimens have been exposed to a solution heat treatment and a two-step age-hardening treatment with varying time at the final temperature. The tensile data for the different tempers have been evaluated in elucidation of already existing models based on the one-parameter framework by Kocks, Mecking, and Estrin. The particle size has been further investigated in the transmission electron microscope for one under- and one over-aged condition and the influence of particles on work-hardening behavior has been discussed.

  Info
Periodical
Materials Science Forum (Volumes 618-619)
Edited by
M.S. Dargusch & S.M. Keay
Pages
555-558
DOI
10.4028/www.scientific.net/MSF.618-619.555
Citation
I. Westermann, O. S. Hopperstad, K. Marthinsen, B. Holmedal, "Work- and Age-Hardening Behaviour of a Commercial AA7108 Aluminium Alloy", Materials Science Forum, Vols. 618-619, pp. 555-558, 2009
Online since
April 2009
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: Hoon Cho, Byoung Soo Lee, Bok Hyun Kang, Ki Young Kim
Abstract:To develop Cu alloy with tensile strength of 800 MPa and electrical conductivity of 80 %IACS (International Annealed Copper Standard), the...
1051
Authors: Ian J. Polmear, Roger N. Lumley
Abstract:Deliberate partitioning of solute elements between the matrix solid solution and dispersed precipitates in aged aluminium alloys can be...
487
Authors: Sushanta Kumar Panigrahi, D. Devanand, R. Jayaganthan
Abstract:An effect of ageing on mechanical properties of ultrafine grained Al 6061 alloys has been investigated in the present work. The solution...
303
Authors: Li Hua Zhan, Yan Guang Li, Ming Hui Huang, Jian Guo Lin
Materials Processing Technology
Abstract:In order to study the similarities and dissimilarities between creep and stress relaxation behavior of age formed aluminum alloys, both creep...
772
Authors: Li Hua Zhan, Yan Guang Li, Ming Hui Huang
Chapter 1: Metal Materials
Abstract:The effects of process parameters on evolution of microstructures of 7055 aluminum alloy in creep age forming were studied and the...
40