|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIV
||Effect of Stress on Crystallization Pathways in Metallic Glasses
||M. Naeem, S. Lan, B. Wang, Yang Ren, Xun-Li Wang
|On-Site Speaker (Planned)
Ca-Mg-Cu bulk metallic glasses have low density, and their elastic and bulk moduli are comparable to human bones which make them potential candidate for biomedical applications. They also have low characteristic temperatures, e.g., Tg, just above 100°C. It is therefore crucial to investigate their phase stability or resistance against crystallization at high temperatures and under stress, in order to explore their suitability for potential applications. In-situ high-energy synchrotron diffraction measurements show that when thermally annealed without load, the crystallization process started right from the beginning with rapid growth. However, when a compressive stress was applied simultaneously during annealing, there was no evidence of crystallization; only structure relaxation was observed. It is suggested that the applied stress restricted the atomic mobility, which suppressed structure relaxation and crystallization.
||Planned: Supplemental Proceedings volume