Amorphous physics and materials: Secondary relaxation and dynamic heterogeneity in metallic glasses: A brief review

J. C. Qiao, Q. Wang, D. Crespo, Y. Yang, J. M. Pelletier

Research output: Contribution to journalReview articlepeer-review

60 Scopus citations

Abstract

Understanding mechanical relaxation, such as primary (α) and secondary (β) relaxation, is key to unravel the intertwined relation between the atomic dynamics and non-equilibrium thermodynamics in metallic glasses. At a fundamental level, relaxation, plastic deformation, glass transition, and crystallization of metallic glasses are intimately linked to each other, which can be related to atomic packing, inter-atomic diffusion, and cooperative atom movement. Conceptually, β relaxation is usually associated with structural heterogeneities intrinsic to metallic glasses. However, the details of such structural heterogeneities, being masked by the meta-stable disordered long-range structure, are yet to be understood. In this paper, we briefly review the recent experimental and simulation results that were attempted to elucidate structural heterogeneities in metallic glasses within the framework of β relaxation. In particular, we will discuss the correlation among β relaxation, structural heterogeneity, and mechanical properties of metallic glasses.

Original languageEnglish
Article number016402
JournalChinese Physics B
Volume26
Issue number1
DOIs
StatePublished - Jan 2017

Keywords

  • mechanical property
  • metallic glass
  • secondary relaxation
  • structural heterogeneity

Fingerprint

Dive into the research topics of 'Amorphous physics and materials: Secondary relaxation and dynamic heterogeneity in metallic glasses: A brief review'. Together they form a unique fingerprint.

Cite this