Dissolution of Precipitates During Solution Treatment of Al-Mg-Si-Cu Alloys
Metallurgical and Materials Transactions B-process Metallurgy and Materials Processing Science(2015)
Abstract
A model combining classical diffusion-controlled dissolution equation for a single spherical particle and Johnson–Mehl–Avrami-like equation is used to deal with dissolution process for different kinds of precipitations (Si, Mg 2 Si, Q(Al 1.9 Mg 4.1 Si 3.3 Cu)) in Al-Mg-Si-Cu alloys. The results reveal that the dissolution time of precipitates increases with increasing their sizes and solute concentrations in the alloy matrix; for the same size and concentration, their dissolution times follow Si > Q(Al 1.9 Mg 4.1 Si 3.3 Cu) > Mg 2 Si. Two precipitates (Mg 2 Si and Al 1.9 Mg 4.1 Si 3.3 Cu) with a size of about 700 nm were obtained in a cold rolled Al-Mg-Si-Cu-Zn alloy, and the complete dissolution time is about 15 seconds, which is basically the same as the calculated time by the developed model. The theoretical prediction of dissolution time can be greatly used to design solution treatment and thermomechanical processing parameters of Al-Mg-Si-Cu alloys.
MoreTranslated text
Key words
Solution Treatment, Alloy Matrix, Duplex Stainless Steel, Dissolution Time, Solid Solution Strengthen
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined