Abstract
We report ductile bulk metallic glasses based on martensitic alloys. The slowly cooled specimens contain a mixture of parent 'austenite' and martensite phase. The slightly faster cooled bulk metallic glasses with 2-5 nm sized 'austenite'-like crystalline cluster reveal high strength and large ductility (16%). Shear bands propagate in a slither mode in this spatially inhomogeneous glassy structure and undergo considerable 'thickening' from 5-25 nm. A 'stress induced displacive transformation' is proposed to be responsible for both plasticity and work-hardening-like behavior or these 'M-Glasses'.
Original language | English |
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Pages (from-to) | 2606-2609 |
Number of pages | 4 |
Journal | Materials Transactions |
Volume | 47 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2006 |
Keywords
- Bulk metallic glass
- Deformation
- Mechanical properties
- Phase transformation
- Solidification