This is all the more remarkable in view of the economic restrictions to which the related industries might be exposed currently.
A particular focus is put on wrought Magnesium alloys that will be of increased significance in future developments. Further strategic challenges for the extended use of magnesium materials refer to their corrosion behaviour and hence the development of reliable surface coatings.
Limiting the emission of green house gases as well as the reduction of fuel consumption are urgent topics that need to be solved in the near future especially in transportation industries. Besides more efficient processes and smart design, the use of light weight materials is one way to address these problems. Despite the fact that there is always a competition among various material groups such as light metals, steels and polymers for a use in relevant light-weight structures depending on economical aspects, materials and component requirements, magnesium alloys still offer a promising potential. With regard to their intrinsic characteristics like low density, promising mechanical properties and their high recyclability, magnesium alloys found more implementations in relevant applications. A further increase in its use is expected.
For more than fifteen years increasing activities in research and applications have been observed all over the world. This led to the development of new alloys and their use in interior, structure and the power train of automobiles. Moreover, magnesium wrought alloys are finding more applications in 3C industries. New alloys and optimised processes are also creating new ideas and stimulating competition for advanced developments to substitute traditional materials. The implementation of new cast alloys and the increased use of wrought alloys are clear indications for the sustainable research and development of the past. Nevertheless, high pressure die casting is still the predominant technology to manufacture components. In recent years, the interest in advanced casting processes using semi solid technologies like thixomolding and rheo-casting has increased. New available equipment opens a broader use of this technology promising improved mechanical properties of magnesium cast products. The use of wrought alloys is still limited due to a lack of knowledge on the improvement of the property profile of wrought alloys.
Still there is a limitation of the availability of economical processes and alloys for the universal use for extrusions, sheets and forgings. But with regard to new developments in alloys and processes like continuous casting and strip or twin-roller casting new opportunities for the enhanced use of wrought alloys will open. In addition solutions to improve the corrosion behaviour and surface properties of magnesium alloys were found.
The optimisation of the primary magnesium production and development of secondary recycling alloys will lead to a sustainable growth in magnesium use in respect to issues of the life cycle assessment of magnesium materials.
Petra von der Bey | idw
Ecology Across Borders: International conference brings together 1,500 ecologists
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15.11.2017 | Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
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Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.
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The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.
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15.11.2017 | Event News
15.11.2017 | Event News
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17.11.2017 | Physics and Astronomy
17.11.2017 | Health and Medicine
17.11.2017 | Studies and Analyses