Abstract
We designed TiNi bulk metallic glass composite (BMGC) which has both a glassy phase and a crystalline phase. The TiNi BMGC undergoes a martensitic transformation during deformation, exhibits the superelastic behavior and excellent mechanical properties: strength of 2.5 GPa, ductility of more than 20%. It is known that mechanical-fatigue is an important feature which affects the martensitic transformation during superelastic cyclic loading. Comparison of the fatigue performances in TiNi dual-phase alloy and TiNi fully crystalline alloy demonstrates that the amorphous phase acts as the barrier and sinking of the dislocation slipping and promotes martensite-austenite phase transition during the superelastic cycling. The representative BMGCs provide a way to design metallic glasses with high ductility and outstanding anti-fatigue properties.
Original language | English |
---|---|
Pages (from-to) | 176-180 |
Number of pages | 5 |
Journal | Journal of Alloys and Compounds |
Volume | 768 |
DOIs | |
Publication status | Published - 2018 Nov 5 |
Keywords
- Bulk metallic glass composite
- Mechanical cycling
- Superelastic
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry