Paper Title:
Boundary Mobilities during Recovery and Recrystallization of Binary Al - Mn Alloys
  Abstract

This paper described new characterization methods and data to quantify the influence of solute atoms on grain boundary and sub-grain boundary mobilities in Al-Mn alloys with a view to their integration into recovery and recrystallization modelling. Detailed SEM measurements of grain boundary mobilities during recrystallization have been made by in-situ annealing experiments on cold deformed Al – 0.1 and 0.3wt.% Mn binary alloys. Stored energies are estimated from the sub-grain sizes and misorientations and the boundary velocities directly measured in the temperature range 200-450°C. It is shown that in many cases good agreement with the Cahn, Lücke, Stüwe model for solute drag is obtained, e.g. the activation energies are intermediate between those of boundary and volume solute diffusion. Some particular cases of rapid growth occur in Al-0.1%Mn indicating boundary breakaway from solute clouds. A complementary study of sub-grain boundary mobilities has started on the same alloys; in this case the average mobilities are estimated from FEG-SEM growth data for the average sub-grain size for temperatures in the range 150-300°C. The results are compared with some previous data on Al- Si and show similar rates.

  Info
Periodical
Materials Science Forum (Volumes 558-559)
Edited by
S.-J.L. Kang, M.Y. Huh, N.M. Hwang, H. Homma, K. Ushioda and Y. Ikuhara
Pages
53-59
DOI
10.4028/www.scientific.net/MSF.558-559.53
Citation
F. Barou, A. Guillotin, C. Maurice, J.M. Feppon, J. H. Driver, "Boundary Mobilities during Recovery and Recrystallization of Binary Al - Mn Alloys ", Materials Science Forum, Vols. 558-559, pp. 53-59, 2007
Online since
October 2007
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: Vera G. Sursaeva
Abstract:When a bicrystal or polycrystal are subjected to a change in temperature, the individual responses of the two adjoining crystals may differ...
801
Authors: Dorothée Dorner, Yoshitaka Adachi, Kaneaki Tsuzaki
Abstract:Compression tests were performed on Fe-3%Si specimens with few grains. The deformation microstructure and microtexture were investigated by...
873
Authors: Myrjam Winning
Abstract:It is shown that an externally applied mechanical stress field can change the kinetics of individual grain boundaries. Moreover, such...
987
Authors: Abhijit P. Brahme, Joseph M. Fridy, Anthony D. Rollett
Abstract:A model has been constructed for the microstructural evolution that occurs during the annealing of aluminum alloys. Geometric and...
1057
Authors: Ye Chao Zhu, Jiong Hui Mao, Fa Tang Tan, Xue Liang Qiao
Chapter 2: Manufacturing Technology and Machinery Automation
Abstract:Low energy grain boundaries were considered to be important in abnormal grain growth by theoretical deduction. The disorientation angles and...
89