Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1501939 | Scripta Materialia | 2008 | 4 Pages |
Abstract
A newly developed model of deformation-induced non-equilibrium grain boundary segregation is used to analyze the intergranular fracture caused by trace impurity sodium in an Al–5 wt.%Mg alloy, which is responsible for a hot ductility trough in the range 150–400 °C. Predictions of sodium grain boundary segregation indicate that a sodium segregation peak corresponds to the ductility trough. It is proposed that the ductility trough is mainly caused by sodium segregation-induced grain boundary embrittlement.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
X.-M. Chen, S.-H. Song, L.-Q. Weng, K. Wang,