Abstract
This study was focused on improving the plastic properties of FeSiBP bulk metallic glasses (BMGs) by adding small amount of Cu (0.1-0.6%). BMGs with significant plastic strain of up to around 3.1% and a strength of 3.3 GPa were obtained in our investigation. Multiple shear bands and related shear ledges were observed on the deformed specimen. The high plasticity is attributed to the nano-scale inhomogeneity that results from phase separation, which can hinder the propagation of shear bands, in effect promoting multiple shearing. The characteristic size of the α-Fe nanoparticles embedded in the glassy matrix changed with Cu content. Our results indicated a dependence between the plastic behavior and the size of the α-Fe nanoparticles. A higher Cu content resulted in an increase in the size of the α-Fe nanoparticles. Of all the samples tested in our investigation, the (Fe0.76Si0.096B0.084P0.06)99.9Cu0.1 alloy exhibited the best plastic properties.
Original language | English |
---|---|
Pages (from-to) | 2598-2602 |
Number of pages | 5 |
Journal | Materials Science and Engineering A |
Volume | 527 |
Issue number | 10-11 |
DOIs | |
Publication status | Published - 2010 Apr 25 |
Keywords
- Bulk metallic glass
- Nanocrystallization
- Plasticity
- Shear band
- α-Fe
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering