Japanese material scientists develop new superelastic alloy - Polidicks

[release] [b](PhysOrg.com) -- Working out of Tokyo University, scientists in the Department of Materials Science, have developed a new metal alloy that unlike other “superelastic” alloys can resume its original shape in temperatures ranging from -196 to 249 degrees Celsius. Prior to this discovery, such alloys were only able to revert to their original form in the much narrower range of -20 to 80 degrees Celsius. They have published their findings in the journal Science. [/b] Superelastic alloys are metals that revert naturally back to their original shape after being bent or deformed by outside forces once those forces are removed, and are generally created by mixing two or more other metals together in certain combinations. In this new effort, the research team added a small amount of nickel to an iron based alloy, which according to lead author Toshihiro Omori, in an email interview with Reuters, says makes their product far more elastic than anything else out there. He also said that because the ingredients for the new metal are plentiful, the resultant alloy should be very cheap to produce. The reason that superelastic allows are able to revert to their prior shape is due to their unique crystal structure that allows all of the atoms it’s made of to shift as one when a force is applied, as opposed to normal metals where the force is diffused through the crystal structure changing it’s composition. Superelastic alloys are used in many applications such as eyeglasses, antennas, and medical tools and equipment. Omori, says he hopes that this new alloy, because of its ability to revert in virtually any real world temperature conditions, can be used in buildings to protect against earthquake damage, or in other applications where things get hot under stress, such as in cars, airplanes and spacecraft. Because many tall buildings are supported by metal beams, the thinking goes, if the those metal beams were made of a superelastic alloy, they would be able to snap back to their original positions after each gyration of the ground, rather than suffering compound trauma as the quake continues, making it much less likely that the building would crumble or fall.[/release] [release]In superelastic alloys, large deformation can revert to a memorized shape after removing the stress. However, the stress increases with increasing temperature, which limits the practical use over a wide temperature range. Polycrystalline Fe-Mn-Al-Ni shape memory alloys show a small temperature dependence of the superelastic stress because of a small transformation entropy change brought about by a magnetic contribution to the Gibbs energies. For one alloy composition, the superelastic stress varies by 0.53 megapascal/°C over a temperature range from –196 to 240°C.[/release] [url=http://www.physorg.com/news/2011-07-japanese-material-scientists-superelastic-alloy.html]Source[/url] [url=http://www.sciencemag.org/content/333/6038/68]Thesis[/url]

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Obviously, the first thing I think of when there's a new advance in materials science is "kinky japanese robot sex". :geno:

Hey guys, a bunch of scientists created an interesting new alloy, [i]dem nips sure is wierd aint they? huh? huh?[/i]

[Mandatory weaboo comment about how Japan is greatest on earth and all other nations are barbaric goes here] But seriously, you'd think we can use this kind of material to create space elevators. I'm horrible at science and physics though so someone please correct me on this.

[QUOTE=LiquidNazgul;30834313][Mandatory weaboo comment about how Japan is greatest on earth and all other nations are barbaric goes here] But seriously, you'd think we can use this kind of material to create space elevators. I'm horrible at science and physics though so someone please correct me on this.[/QUOTE] In short : no. What you need for a space elevator is a ridiculously high strength to mass ratio (i.e. an incredibly strong and light material). What we have here is a metal that can be deformed from its original shape and then, on heating, return to its original shape. What makes it special is that it's done over a larger range of temperatures than previously achieved. Something like carbon nanotubes might fit the bill for a space elevator.

Probably will be mostly used in glasses which the frames bend and twist.

[QUOTE=Turnips5;30834157]Obviously, the first thing I think of when there's a new advance in materials science is "kinky japanese robot sex". :geno:[/QUOTE] Wow, uh, I was totally thinking expandable buildings and space environments, but that works too I guess!

I wish Japan would stop making those very fucking awkward tv shows of shirtless eagle men and start working on things like this. And I can't wait to see how this is put to the test.

What could this be used for?

But will it blend?

The question is: Just how elastic is this superelastic compound? And how durable is it when submitted repeatedly and consistently to stress? If both answers are quantified highly, it could mean a revolution in mechanical - and weapons - technology.