Observations of grain-boundary phase transformations in an elemental metal.

ABSTRACT: The theory of grain boundary (the interface between crystallites, GB) structure has a long history¹ and the concept of GBs undergoing phase transformations was proposed 50 years ago^2,3. The underlying assumption was that multiple stable and metastable states exist for different GB orientations^4-6. The terminology 'complexion' was recently proposed to distinguish between interfacial states that differ in any equilibrium thermodynamic property⁷. Different types of complexion and transitions between complexions have been characterized, mostly in binary or multicomponent systems^8-19. Simulations have provided insight into the phase behaviour of interfaces and shown that GB transitions can occur in many material systems^20-24. How

SUBMITTER: Meiners T 

PROVIDER: S-EPMC7100613 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature