|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIII
||Toughen and Harden Metallic Glass through Designing Statistical Heterogeneity
||Yongwei Wang, Mo Li
|On-Site Speaker (Planned)
Metallic glass has remarkable mechanical properties compared to its crystalline counterparts. However, it is severely limited by the lack of plasticity or toughness and hardening ability which are among the basic requirements for structural and functional applications. Various attempts have been made experimentally to address these issues but with very limited improvement. In this talk, we report a new attempt via the material design approach. With a help of a new constitutive model, we deliberately introduce statistical heterogeneity into the metallic glass samples, i.e. free volume variation or dispersion. We show that with the increase of the statistical heterogeneity, the plasticity and toughness can be enhanced systematically and in certain circumstances, even work hardening can be achieved. We will discuss the underlying mechanisms and also possible design of new metallic glass composites using the concept of heterogeneity dispersion.
||Planned: A print-only volume