|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIV
||L-33: Extending the Realm of Glass Transition Temperature and Strength Relation in Metallic Glasses
||Hehsang Ahn, Jinwoo Kim, Soyeon Kim, Eun Soo Park
|On-Site Speaker (Planned)
The drawback in low thermal stability of metallic glasses has limited their applications as structural materials despite their high strength, wear and corrosion resistance. Glass transition temperature (T<sub>g</sub>), which represents the thermal stability of a metallic glass, generally have a linear correlation with the yield strength (σ<sub>y</sub>) of the alloy. Thus, the alloy design for the ascent of T<sub>g</sub> to extremely high temperature is an effective way for developing a strong and thermally stable metallic glass. Here, we developed novel refractory metal-based metallic glasses with high T<sub>g</sub> over 1000 K and σy exceeding 5 GPa. The T<sub>g</sub> and σ<sub>y</sub> of the alloys were evaluated precisely by thermomechanical analysis and nanomechanical test, respectively. These unique metallic glasses lighten the unexplored realm of T<sub>g</sub>-σ<sub>y</sub> relation in metallic glasses, and have a large potential for applications in extremely harsh environment, such as a high-temperature wear-resistant coating materials.
||Planned: Supplemental Proceedings volume