The discovery is generating significant interest because the material’s ability to withstand external forces exceeds those of any other steel alloy in existence. Metallic glasses have captured the attention of materials engineers because they are exceptional hard without being brittle. The material was designed specifically to survive extreme conditions. That means it can be created under extreme conditions without being damaged.
The material, which is currently known as SAM2X5-630, was created by mixing metal powders, which were then subject to extreme pressure and exposed to a 10,000-amp current at nearly 1,200° F. The production process is known as spark plasma sintering. That production method is preferred because it produces finished materials in a matter of minutes.
Researchers tested the material by firing high-velocity copper plates at it. The test projectiles traveled at rates between 500 m/s and 1,300 m/s. While the SAM2X5-630 samples did deform on impact, the deformations were not permanent. The test material is nearly 60 times stronger than ordinary stainless steel, and about 2.5 times stronger than tungsten-carbide ceramic.
Despite its promise, the new material doesn’t take the crown for being the most elastic. Diamonds are about 5 times stronger than the new metallic glass material, but researchers are looking for ways to make the SAM2X5-630 even better at absorbing more impact. The most likely way to accomplish that involves increasing the material’s weight.
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