Combinatorial Method And Thermal Training On Metallic Glasses

Amorphous alloy(also known as metallic glass)is a new kind of young multi-component alloy.Its unique atomic disorder structure,excellent mechanical properties(the strength of Co-based amorphous amorphous is as high as 6.0 GPa)and physical and chemical properties have attracted attention from many fields such as material science and condensed matter physics.A large number of metal elements provide a wide range of application scenarios and potential value for amorphous alloys.However,the complexity of element diversity also hinders the design and development of amorphous alloys.Exploring new amorphous alloys has always stayed in the "trial and error" stage,which makes a large number of amorphous alloys with special functions not found.The Material Genome Project(MGP)aims to design and screen new materials by rapid combinatorial preparation and high throughput characterization,so as to improve the efficiency of material development.In this paper,the idea of material genetic engineering and the unique high throughput method are used to explore the composition design and rapid screening of amorphous alloys.Firstly,by exploring the relationship between the resistivity of amorphous alloys and glass forming ability(GFA),a high-throughput resistance-component characterization method was found,and a thin film resistance scanning test system was built to effectively predict the composition of amorphous alloys with high GFA.Through the establishment of high-throughput characterization,a set of development methods of high-throughput amorphous materials were further improved,including the preparation of composite films,rapid characterization of composition,structural characterization and characterization of glass forming ability,which helped to accelerate the development of new materials.With the help of high throughput technology,a kind of high temperature amorphous materials has been found in this paper.The glass transition temperature of Ir-Ni-Ta-(B)high temperature amorphous alloy exceeds 800 ?.At room temperature,the strength of Ir-Ni-Ta-(B)amorphous alloy is about 5.1 GPa.The strength of 3.7 GPa can be maintained even at temperatures exceeding 700 ?,which is much higher than that of conventional superalloys.At the same time,it has superplasticity,thermal stability,corrosion resistance,oxidation and other excellent characteristics.Therefore,this paper attempts to explore potential applications.In the application of amorphous alloys,processing is often involved.a new heat treatment method is designed by using the memory effect of amorphous alloys,which provides a new idea for improving the aging behavior and prolonging the service life of amorphous alloys.