Na Jong Hyun, Han Kyung Hee, Garrett Glenn R, Launey Maximilien E, Demetriou Marios D, Johnson William L
Glassimetal Technology, Inc, Pasadena, CA, 91107, USA.
Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA, 91125, USA.
Sci Rep. 2019 Mar 1;9(1):3269. doi: 10.1038/s41598-019-40014-w.
"Designing" metallic glasses to exhibit properties beyond those offered within the narrow composition ranges where glass formation is possible poses a formidable scientific challenge. This challenge may be tackled by forming composite structures comprising a metallic glass matrix and homogeneously precipitated dendrites, known as "metallic glass matrix composites" (MGMCs). In principle, MGMCs can be designed to exploit the attractive performance characteristics of the metallic glass while alleviating its negative undesirable attributes. In this work we introduce a MGMC development concept for designing color in metallic glass. MGMCs consisting of a white-gold metallic glass matrix with finely dispersed yellow-gold microdendrites are explored. A series of gold MGMCs is developed displaying uniform and visually-unresolved yellow colors over a broad range of chromaticity, along with high overall hardness. This design concept paves the way for the development of a new generation of metal alloys that combine advanced engineering performance with attractive cosmetic attributes.
设计出具有超出在可能形成玻璃的狭窄成分范围内所具备性能的金属玻璃，是一项艰巨的科学挑战。通过形成由金属玻璃基体和均匀沉淀的枝晶组成的复合结构（即“金属玻璃基复合材料”，MGMCs），可以应对这一挑战。原则上，MGMCs可以被设计成利用金属玻璃具有吸引力的性能特征，同时减轻其负面不良属性。在这项工作中，我们引入了一种用于设计金属玻璃颜色的MGMC开发概念。我们探索了由具有精细分散的黄色金微枝晶的白色金金属玻璃基体组成的MGMCs。开发了一系列金色MGMCs，它们在广泛的色度范围内呈现出均匀且视觉上无法分辨的黄色，同时还具有较高的整体硬度。这一设计概念为开发新一代结合了先进工程性能和吸引人的外观属性的金属合金铺平了道路。
