中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 31 No. 9 September 2021 |
（1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2. Songshan Lake Materials Laboratory, Dongguan 523808, China;
3. College of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414000, China;
4. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:(Zr53Al11.6Ni11.7Cu23.7)1-x(Fe77.1C22.9)x (x=0-2.2, at.%) bulk metallic glasses (BMGs) were prepared by copper mold suction casting method. Their glass forming ability and physical and chemical properties were systematically investigated. The glass forming ability is firstly improved with increasing x, and then decreased when x exceeds 0.44 at.%. Both glass transition temperature and crystallization temperature are increased, while the supercooled liquid region is narrowed, with Fe-C micro-alloying. The hardness, yielding and fracture strength, and plasticity firstly increase and then decrease when x reaches up to 1.32 at.%. The plasticity of the BMG (x=1.32 at.%) is six times that of the Fe-free and C-free BMG. In addition, by the Fe-C micro-alloying, the corrosion potential is slightly decreased, while the corrosion current density increases. The pitting corrosion becomes increasingly serious with the increase of Fe and C content.
Key words: Zr-based metallic glass; corrosion property; thermal property; mechanical property; Fe-C micro-alloying
