Grain Boundary Transitions in Binary Alloys (original) (raw)

ADS

;

• Carter, W. Craig ;
• Cannon, Rowland M.

Abstract

A thermodynamic diffuse interface analysis predicts that grain boundary transitions in solute absorption are coupled to localized structural order-disorder transitions. An example calculation of a planar grain boundary using a symmetric binary alloy shows that first-order boundary transitions can be predicted as a function of the crystallographic grain boundary misorientation and empirical gradient coefficients. The predictions are compared to published experimental observations.

Publication:

Physical Review Letters

Pub Date:

August 2006

DOI:

10.1103/PhysRevLett.97.075502

Bibcode:

2006PhRvL..97g5502T

Keywords:

• 61.72.Bb;
• 61.72.Mm;
• 68.35.Rh;
• Theories and models of crystal defects;
• Grain and twin boundaries;
• Phase transitions and critical phenomena