Abstract
The notch fracture toughness of Fe75Mo5P10C8.3B1.7monolithic bulk metallic glass (BMG) and Fe77Mo5P9C7.5B1.5and Fe79Mo5P8C6.7B1.3BMG matrix composites with α-Fe as reinforcing phase, fabricated by suction mould casting, were evaluated. It was found that the monolithic BMG has a toughness of 27 MPa m1/2, while the Fe77Mo5P9C7.5B1.5BMG composite reinforced by single α-Fe dendrite phase exhibits a higher toughness of nearly 40 MPa m1/2. However, for the Fe79Mo5P8C6.7B1.3alloy with more dendrites, the toughness decreased up to 25 MPa m1/2. Microstructure investigation reveals that the simultaneous formation of Fe-Mo-P hard brittle phase apart from α-Fe dendrites in the Fe79Mo5P8C6.7B1.3alloy is the reason for the degradation of the fracture toughness.
Original language | English |
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Pages (from-to) | 9441-9446 |
Number of pages | 6 |
Journal | Journal of Alloys and Compounds |
Volume | 509 |
Issue number | 39 |
DOIs | |
Publication status | Published - 29 Sep 2011 |
Keywords
- Amorphous materials
- Mechanical properties
- Microstructure
- Quenching
- Rapid-solidification
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry