Professor Iain Todd from the Department of Materials Science and Engineering at the University of Sheffield, in collaboration with collaborators at Imperial College London, took a new approach to the development of engineered components made using additive manufacturing technology.
Additive manufacturing (AM), also known as 3D printing, is usually used to manufacture engineering parts. These components use a magnetic float level gauge structure instead of solid materials, so they are much lighter than solid-state components and can be produced in such a way that they also show a combination of properties that traditional solid-states cannot. These structures are called building materials.Generally, these magnetic float level gauge structures have a uniform layout, and all nodes conform to a regular array, where all the struts between the nodes follow a common plane: and here is the problem.The research, published in the journal Nature on January 17, 2019, describes how these uniform magnetic float level gauges reproduce the structure of a metal single crystal: AM magnetic float level gauge nodes are similar to atoms in a single crystal , And the support rod is similar to the atomic bond. In each of these structures, all atomic planes or nodes are perfectly aligned.For certain applications, such as the high temperature end of jet engines, single crystal materials are suitable because they can withstand deformation at extreme temperatures; however, they have disadvantages related to their mechanical properties. This shortcoming can also be seen in AM parts with a uniform magnetic float level gauge structure.After compressing the structure, once the force becomes sufficient to cause permanent deformation, the magnetic float gauge will shear along one or more nodal planes. The collapse becomes catastrophic because nothing can stop this cutting.In polycrystalline materials with many magnetic float level gauges, the atomic planes are arranged randomly; their atomic planes are arranged randomly. Therefore, when the shearing force acts in a specific direction, when the crack hits the magnetic float level meter of the magnetic float level gauge where the atoms are arranged differently from the beginning of the crack, the crack will decelerate or stop. In addition, various materials can be introduced in the form of precipitates, phases or inclusions to make the material stronger. These materials also help slow crack growth.This basic knowledge of metallurgy inspired researchers at Imperial College London and the University of Sheffield to simulate polycrystalline microstructures in AM magnetic float level gauges, aiming to create strong, damage-resistant building materials.By computer modeling the atomic structure, improving the atomic structure and forming a mesoscopic structure based on polycrystalline materials, engineers have revolutionized the way materials are designed. This material is called a metamagnetic float level gauge.Experimental studies on the components produced by these quasi-magnetic float level gauges have shown that they have a high energy absorption capacity. Compared with materials that simulate a single crystal structure, the similar polymagnetic float level gauge materials can withstand before rupture Nearly seven times the energy.Although basic metallurgical concepts are used to promote the development of building materials, scientists are adopting the creation of building materials as an alternative method of analyzing complex metallurgical phenomena.
Post time: 21-09-21