A team of Monash University researchers, led by Professor Nick Birbilis from the Department of Materials Science and Engineering, have found a way to change the microstructure of magnesium from that of a brittle structure to one that is malleable (i.e. The real progress started with the development of a new description of the atomic interactions in magnesium, a feature essential if atomistic models are to reveal any true material behavior. Fast forward two years and the mystery is solved: they managed to establish a picture that unified decades of experimentation. But then Wu came from Singapore and brought renewed energy, an array of necessary technical skills, and exceptional motivation". Elemental magnesium is a gray-white lightweight metal, two-thirds the density of aluminium. Magnesium is the lightest metal found on earth; it is four times lighter than steel and a third lighter than aluminum. From your first day to your final lecture, we make sure you get everything you need. However, the present research unlocks components that require formability, such as panels. part may be reproduced without the written permission. Professor Birbilis’ team chose to work with magnesium because it is the lightest structural metal. While he cannot predict when magnesium will be used heavily, he believes that the insights revealed by this new work will generate new ideas and approaches because the underlying origin of the poor behavior of magnesium is now more clearly understood. It reeked - or at least some of its compounds did. These features should make it the ideal material for all kinds of uses, particularly in the automotive industry where fuel efficiency is greatly improved by reduced vehicle weight. It comes as magnesium ribbon sometimes, and you can twist it a lot... fun to play with, but even more fun to put over a bunsen burner! "We must find a compromise between the cost of the alloy and the material performance" says Prof. Curtin. You can unsubscribe at any time and we'll never share your details to third parties. In fact, about 60% of the magnesium in the human body is stored in the bones. This allows magnesium to be shaped and used in the... See full answer below. “By refining the microstructure we have changed the deformation mechanism from intra granular (brittle) to inter granular (formable)”, post-doctoral scholar Randy (Zhuoran) Zeng says. Simulations to explain 40 years of experiments. Medical Xpress covers all medical research advances and health news, Tech Xplore covers the latest engineering, electronics and technology advances, Science X Network offers the most comprehensive sci-tech news coverage on the web. Last updated: Feb 2020. By using our site, you acknowledge that you have read and understand our Privacy Policy This breakthrough, published in the journal Nature, could open the way to many applications of this lightweight metal. Click here to sign in with Usually magnesium is formed at elevated temperatures between 200-400°C; this new technique will reduce energy costs associated with … The atomic structure of the "c a" dislocation became entirely different, morphing into several possible geometries that locked it in place so that it could not move. Curtin believes these alloying elements bind to the normal "c a" and stabilize it somewhat, relative to the immovable "c a" dislocations. According to Dr. Zeng, this is a major advantage. It is also abundantly available, being the eight most common element in … Zhaoxuan Wu and William Curtin of the Laboratory for Multiscale Mechanics Modeling (LAMMM) have solved the 40-year-old scientific riddle of the low ductility magnesium. Solving this mystery had an interesting history: long struggles, tangential advances, a new collaboration, and a "Eureka" moment. Our current students page covers the journey from orientation to research. Explore our engineering departments at Clayton and Malaysia to see what we can offer you. Then came the "Eureka" moment. Single magnesium products allow for only one pathway of absorption, rather than three. "We were performing atomic simulations of the normal "c a" dislocation to better understand its behavior, and suddenly it changed". “Previously no one has made magnesium so workable - but Monash University has!”. Your email address is used only to let the recipient know who sent the email. Attendance on campus is strictly limited to permitted workers and exempt students; face masks must be worn at all times. "We had some accomplishments, but not on the most crucial issues, and I was about to give up, having exhausted what I thought we could do. If the process could be delayed for a few seconds at normal temperatures, this could be enough to allow an industrial use. Magnesium has the lowest melting (923 K (1,202 °F)) and the lowest boiling point 1,363 K (1,994 °F) of all the alkaline earth metals. Magnesium Glycinate. Discover what we're working on, and how you can make the move from expert to specialist. Within the family of chelated magnesium products, there are several forms. This site uses cookies to assist with navigation, analyse your use of our services, and provide content from third parties. Importance of the energy gap in electronic transport properties, Science X Daily and the Weekly Email Newsletter are free features that allow you to receive your favorite sci-tech news updates in your email inbox. In fact, it simply doesn't crack. Why study mechanical, aerospace and mechatronics engineering? Our research is opening doors to new and better approaches. 'Poisoning' corrosion brings stainless magnesium closer, A photonic crystal coupled to a transmission line via an artificial atom, New transient ultraluminous X-ray source detected in the galaxy NGC 7090, X-ray diffraction reveals details inside mummies without having to open them up, Physicist creates N95-type respirators using cotton candy machine, Springer Nature announces plan for gold open access options for Nature journals. The new "c a" structures had been observed experimentally but how they occurred, whether they were real or experimental anomalies, and why there were several different structures, were all mysteries in the community. Both its low ductility and low fracture toughness are detrimental to its application as a light-weight, structure material. or, by Alexandre Babin, Ecole Polytechnique Federale de Lausanne. Magnesium is not currently used in the manufacturing of transport vehicles such as cars, because it is intrinsically a brittle metal not known for malleable properties. Why Monash Engineering for graduate research? Thus, they found that it was inevitable that the new "c a" structures would form and kill the ductility of magnesium. “We can even roll it to the thickness of aluminium foil and bend it 180° after rolling”, Dr. Zeng says. View this answer. Your opinions are important to us. In a world first which could have major implications for the transport industry, Monash University Engineering researchers have discovered a way to shape pure magnesium at room temperature. "To make magnesium malleable, we must fight against the forces of nature," said Wu. not with the "metallic bonds" associated with pure metals. Master’s by coursework – Mechanical Engineering at Monash, Postgraduate research degrees – Mechanical and Aerospace Engineering at Monash, Postgraduate research degree - course requirements. This dislocation, observed experimentally, could not previously be predicted. “With this discovery, we can expand beyond the application of cast magnesium to super-formable magnesium that can be rolled, bent or compressed into any shape, even at room temperature”. Whether you’re just starting or in your final semester, there's lots to think about. Pure polycrystalline magnesium is brittle and easily fractures along shear bands. It's brittle, prone to ponginess and arguably the dunce of the periodic table.
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