Balancing benefits of strength, plasticity and glass-forming ability in Co-based metallic glasses

• A family of novel Co-Ta-B-Si bulk metallic glasses (BMGs) was developed. • The BMGs exhibit both high strength above 5.5 GPa and large plasticity up to 6.4 %. • The BMGs show the enhancement of glass-forming ability (GFA: up to 4 mm). • The improvement of plasticity and GFA were explained by calculated analysis. • A self-organization behavior of shear bands is liable for the increase in plastic. Development of advanced metals materials with...