Abstract
This chapter applies the concept of high entropy to metallic glasses (MGs), in particular, to those in a bulk shape: bulk metallic glasses (BMGs). The resultant target materials in this chapter are mainly high-entropy bulk metallic glasses (HE-BMGs), which have recently been developed as alloys with characteristics of both high-entropy alloys (HEAs) and BMGs. The contents in this chapter start by introducing historic background of HE-BMGs and by summarizing the differences between HEAs and BMGs. Then, the fundamental properties of representative HE-BMGs found to date are described mainly in terms of thermodynamic and mechanical behaviors. Besides the experiments, the latest computational approach for clarifying the features of HE-BMGs is described based on the results using ab initio molecular dynamics simulations for the atomic structure, chemical interaction, and diffusivity in this unique class of materials. The current status and future prospects of the HE-BMGs by utilizing their unique features are outlined for their future applications.
| Original language | English |
|---|---|
| Title of host publication | High-Entropy Alloys |
| Subtitle of host publication | Fundamentals and Applications |
| Publisher | Springer International Publishing |
| Pages | 445-468 |
| Number of pages | 24 |
| ISBN (Electronic) | 9783319270135 |
| ISBN (Print) | 9783319270111 |
| DOIs | |
| Publication status | Published - 2016 Jan 1 |
Keywords
- Ab initio molecular dynamics simulations (AIMD)
- Amorphous
- Atomic size difference
- Bulk metallic glasses (BMGs)
- Diffusion constants
- Enthalpy of mixing
- Entropy of mixing
- Glass-forming ability
- High-entropy alloys (HEAs)
- Kinetics
- Multiphase
- Phase diagrams
- Phase stability
- Phase transformations
- Solidification
- Thermodynamics
ASJC Scopus subject areas
- Engineering(all)
- Materials Science(all)
- Biochemistry, Genetics and Molecular Biology(all)