Glass forming ability and thermodynamic properties in novel La-Al-Cu-Co bulk metallic glasses
Glass forming ability and thermodynamic properties in novel La-Al-Cu-Co bulk metallic glasses作者机构：School of Materials Science and Engineering Shaanxi University of Technology
出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)
年 卷 期：2015年第33卷第9期
页 面：972-976页
核心收录：
学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 070303[理学-有机化学] 0703[理学-化学]
基 金：Startup Doctoral Foundation of Shaanxi University of Technology
主 题：bulk metallic glass La-A1-Cu-Co glass forming ability thermodynamics rare earths
摘 要：The glass forming ability （GFA） and thermodynamic properties of the La-AI-Cu-Co alloy system were investigated, and novel La-AI-Cu-Co bulk metallic glasses （BMGs） with a minimum critical diameter of 8 mm were fabricated. The differing GFAs were examined from a thermodynamic viewpoint. The GFA of the La-A1-Cu-Co alloys was well-correlated with the supercooled liq- uid region, ATx, and the parameter, 7; but not with the reduced glass transition temperature, Trg. In addition, the La62Al14Cu14Co8 BMG exhibited a high GFA, low glass transition temperature of 412 K, and broad supercooled liquid region of 70 K. These novel BMGs, which were fabricated from low-cost raw materials, had the potential to be used in various applications. The GFA of the pre- sent alloys exhibited a dependence on the relative number of AlqEo and AI-Cu atomic pairs, i.e., on the AI：Co and AI：Cu ratios, which were -2.3 and 0.85, respectively.
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