期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 31, 期 9, 页码 2750-2761出版社
ELSEVIER
DOI: 10.1016/S1003-6326(21)65690
关键词
Zr-based metallic glass; corrosion property; thermal property; mechanical property; Fe-C micro-alloying
资金
- National Natural Science Foundation of China [51871234]
- National Key Research and Development Program of China [2016YFB-0300500]
- Open Fund of Key Laboratory of Materials Preparation and Protection for Harsh Environment (Nanjing University of Aeronautics and Astronautics), China
- Ministry of Industry and Information Technology, China [XCA19013-04]
The study found that Fe-C micro-alloying can improve the glass forming ability and physical and chemical properties of bulk metallic glasses (BMGs), but an increase in Fe and C content within a certain range may lead to a decrease in properties such as hardness.
(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.
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