Scientists at the Institute of MIT has "accidentally" discovered the mechanism associated metal cracks of the observed crystals of nickel alloy bars stretched.

Initially the research team observed a phenomenon intuition of nickel alloys cracks heal themselves when the group stretches out bar alloy.This group was surprised and did not know why.

Soon the group must perform experiments to test. "We have to go back and check the metal upright bars. Indeed, the phenomenon of self-consecutive nothing wrong," science Professor Michael Demkowicz techniques, the study along with Xu Guoqiang, said .

To find an explanation for this phenomenon, the group has set up a model of the crystal structure of nickel alloy on the computer. The model shows that this alloy is composed of small crystal beads with durability and load capacity is very good.

When stretched alloy bars, tiny crystals are white hexagons in principle will be softened. But the fact that not all particles are the same. This phenomenon is called "defects" of the metal.

Hand "defects" in a very strong metal and can reverse what having a powerful impact on metal. Other words, the material cracks, fissures instead of further expanding it can heal the cracks.

Currently the researchers are planning to build a metal alloy capable of self-repair cracks even more closely to the specific application. A few months ago, a group of European scientists also successfully designed a self-associated polymer materials.

Materials will heal promises more action to life. Just imagine bridges, furniture piece or simply a frame or tape if your material is that it can heal the broken forever.