Researchers at the University of Lorraine in France say that quasicrystals, a type of complex metal alloy with crystal-like properties, can be useful in the design of new composite materials.
Automotive, aerospace and machinery industries, among others, are resorting more and more to the use of 3D printing methods to produce manufacturing components. There is a strong demand that the technologies involved in this process produce parts with stronger functional properties. This requires the development of new adaptable materials.
Researchers at the University of Lorraine in France say that quasicrystals, a type of complex metal alloy with crystal-like properties, can be useful in the design of new composite materials for this purpose.
In a review published by Science and Technology of Advanced Materials (http://dx.doi.org/10.1088/1468-6996/15/2/024802), Samuel Kenzari and co-authors summarized recent developments related to the use of complex metal alloys in additive manufacturing.
Additive manufacturing, commonly thought of as 3D printing, is a process that involves the manufacture of components from a digital model. Traditional manufacturing methods often start with an object and remove material from it in order to obtain the final component. In additive manufacturing, lasers are employed to build layers based on a digital model, ultimately resulting in the final component.
Additive manufacturing methods are becoming widespread and affect many industries. In 2012, they generated global revenues of US$ 2.2 billion. But the range of materials used is still restricted despite a real demand for manufacturing lighter parts with better functional properties.
Incorporating complex metal alloys (CMAs), such as quasicrystals, in the design of new composite materials can help meet this demand.
Complex metal alloys are promising because of their potentially useful properties such as low friction, relatively good corrosion resistance, and good resistance to wear. They are also, however, intrinsically brittle, preventing their use as bulk materials. Scientists, reports the University of Lorraine team of researchers, have found alternatives to circumvent this problem. One is to use CMAs as reinforcement particles. The other is to use them as a coating material.
CMAs have been used together with metals to develop lightweight composites that can be used in building 3D parts. These parts have mechanical properties similar to those of steel-brass composites currently used in the industry but with the advantage of having a lower density.
“Automotive and aeronautics industries are happy to have functional parts with a lower density,” explains one of co-authors, Prof. Fournee Vincent. “Reducing the weight of vehicles reduces fuel consumption.” A practical example is shown in figure.
Quasicrystals have also been used to reinforce polymer matrix composites used in 3D printing technologies. These new composites present several advantages compared to other materials with regards to friction, wear, and sealing.
Functional parts using both kinds of alloys are already being commercialized. Pipes and intake manifolds used in fluidic applications surrounding car engines are a good example.
The researchers are currently working on the development of functional parts made using CMAs that have health applications.
For more information contact:
Prof. Vincent Fournée
The University of Lorraine
Complex metallic alloys as new materials for additive manufacturing
Samuel Kenzari, David Bonina, Jean Marie Dubois and Vincent Fournée:
Sci. Technol. Adv. Mater. Vol. 15 (2014) p. 024802.
Electron tomography technique leads to 3-D reconstructions at the nanoscale
24.05.2018 | The Optical Society
These could revolutionize the world
24.05.2018 | Vanderbilt University
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences