Thermal stability and glass-forming ability of new Ti-based bulk metallic glasses |
| |
Institution: | 1. School of Materials Science and Engineering, Shanghai Jiao Tong University, 1954, Huashan Road, Shanghai 200030, China;2. School of Materials and Engineering, Bei Hang University, Beijing 100083, China |
| |
Abstract: | New Ti-based metallic glass (Ti53Cu15Ni18.5Al7Si3M3B0.5 (M = Sc, Hf, Ta, Nb)) alloys were prepared by melt spinning and copper mold casting. The effects of foreign atoms on the thermal stability and the glass-forming ability were investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and differential thermal analysis (DTA). The results show that the values of Trgs are 0.619, 0.609, 0.606, 0.597 K and ΔTxs are 58, 54, 85, 78 K, respectively. The foreign atom’s size factor (∥RF − RTi∣/RTi − 0.12∣) and mixing heat factor (∑xiHiF/∑xiWi) are proposed to predict the glass-forming ability and thermal stability, respectively. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|