Dispersoid evolution during homogenization of 6xxx alloys

被引：0

作者：

Suni, JP ^{[1
]}

Rouns, TN ^{[1
]}

机构：

[1] ALCOA, Ctr Tech, Alcoa Ctr, PA 15069 USA

来源：

ALUMINUM ALLOYS 2002: THEIR PHYSICAL AND MECHANICAL PROPERTIES PTS 1-3 | 2002年 / 396-4卷

关键词：

dispersoids; FEG; SEM; modeling; homogenization; distribution;

D O I：

10.4028/www.scientific.net/MSF.396-402.687

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Field emission gun SEM (FEG-SEM) data is described for a number of commercial 6xxx series ingots after various homogenization type thermal treatments. The alloys include both rolled and extruded products and contain a range of manganese and chromium contents. The particle characterization results are used to fit a model for dispersoid evolution during thermal processing. The model follows dispersoid changes via nucleation, growth/dissolution and coarsening, and is comprised of evolutionary equations for number density and volume fraction. The dispersoid phase is assumed to be a substitutional solid solution of iron, manganese and chromium in A112, which allows for a range of manganese and chromium contents to be covered. The fitted model takes as inputs alloy composition and arbitrary thermal history, and outputs dispersoid and solute quantities.

引用

页码：687 / 692

页数：6