( 1. 哈爾濱工業(yè)大學 材料科學與工程學院，哈爾濱 150001；
2. 空軍航空大學 機械工程系， 長春 130022)
摘 要: 采用二元深共晶比例法， 設計了系列Cu-Ti-Zr-Ni非晶合金成分。采用傳統的銅模鑄造法， 由成分為Cu52.55Ti30.05Zr11.4Ni6與Cu53.1Ti31.4Zr9.5Ni6的兩種合金可以制備出臨界直徑達5 mm的完全非晶組織。 兩合金均具有較高的約化玻璃轉變溫度（Trg）， 分別為0.603與0.598， 其合金成分更加接近體系深共晶點， 因而具有良好的玻璃形成能力。其中Cu52.55Ti30.05Zr11.4Ni6的玻璃轉變溫度(694 K)與過冷液相區(qū)寬度(52 K) 均較高， 表明該合金具有良好的熱穩(wěn)定性。
關鍵字: 塊體非晶； 二元深共晶； 玻璃形成能力； 約化玻璃轉變溫度
by binary deep eutectic method
（ 1. School of Materials Science and Engineering,
Harbin Institute of Technology, Harbin 150001, China;
2. Department of Mechanical Engineering,
Aviation University of Air Force, Changchun 130022, China）
Abstract: A series of bulk amorphous alloys in Cu-Ti-Zr-Ni system was fabricated based on binary deep eutectic. Among them, Cu52.55Ti30.05Zr11.4Ni6 and Cu53.1Ti31.4Zr9.5Ni6 can be quenched into single amorphous structure with diameter of 5 mm by conventional copper mold casting method. They both possess the relatively higher reduced glass transition temperatures(Trg) of 0.603 and 0.598, respectively, indicating that the alloy compositions are close to deep eutectics and accounting for good glass forming ability. Especially, Cu52.55Ti30.05Zr11.4Ni6 exhibits relatively higher glass transition temperature (Tg=694 K) and wider supercooled liquid region (ΔTx=52 K), implying a good thermal stability.
Key words: bulk metallic glasses; binary deep eutectic; glass forming ability; reduced glass transition temperature
