Iron Alloy Could Create Earthquake-Proof Buildings
separsons writes "Researchers at Japan's Tohoku University designed a new shape memory metal alloy. The super elastic iron alloy can endure serious stretching and still return to its original shape. The scientists say that once optimized, the material could be used in everything from braces to medical stents to earthquake-proof buildings!"
Original article, after following three backlinks: http://uk.reuters.com/article/idUKTRE62I4AE20100319
Here's a page with a bit more detail. These alloys are of similar composition to stainless steel and tend to have very high levels of Nickel and a little Chromium tossed in for good measure. Shape memory alloys work by utilizing a crystal structure phase transition that causes stress in the alloy to re-align which basically is responsible for the shape change.
Sigs are too short to say anything truly profound so read the above post instead.
No, it won't be better. Think about why the metal is there. If the metal in the concrete is too flexible, the greater brittleness of the concrete will result in the concrete cracking and breaking due to the metal not providing sufficient support.
I hate printers.