|
|
Article: Research results from D.G. Eskin and co-authors update knowledge of materials science.
- Article from:
- Journal of Technology
- Article date:
- November 10, 2009
CopyrightCOPYRIGHT 2009 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
"Different grain morphologies are identified in the central portion of a direct-chill cast, grain-refined 7075-alloy billet, i.e. coarse-cell and fine-cell dendrite grains and grains that are less developed than the bulk of the structure. Three-dimensional reconstruction of a representative volume is used for separating these distinct grain types," scientists in Netherlands report.
"Microsegregation measurements show that coarse-cell grains are depleted of solutes (Cu, Mg, Zn), whereas fine-cell grains and less developed grains are enriched in solutes. Analysis of non-equilibrium solidification demonstrates that the observed grain types could be formed in ...