The hardest material in the world is no longer diamond: this new alloy is the hardest substance ever discovered
December 12, 2022
0
Easo George, chief of advanced alloy theory and development at Oak Ridge National Laboratory and the University of Tennessee, and his team in a newly published study of
Easo George, chief of advanced alloy theory and development at Oak Ridge National Laboratory and the University of Tennessee, and his team in a newly published study of the alloy they obtained. It is said to be the hardest substance in the world.
We knew the hardest substance in the world as diamond, but with the latest information this has changed. Let’s see what this alloy consists of, how Easo George and his team came up with this alloy.
This new alloy consists of chromium, cobalt and nickel.
This alloy has exceptionally high strength and ductility, which scientists “extraordinary damage tolerance” leads to what he calls the condition. Also, oddly enough, as the alloy cools, the damage tolerance increases, so it gets harder.
Easo George, leader and author of the study, has this to say about the alloy: “When you design structural materials, you want them to be strong, but also ductile and resistant to breakage. You usually try to maintain balance, but always hardness or higher strength. But this alloy is both hard and shatter-resistant. he tougher.”
The harder normal metals are, the more brittle they are.
Atoms in metals have a repeating arrangement in three-dimensional space. This model ‘crystal cage’ known as. Repeating components in the cage unit cells is called. Boundaries are sometimes created between deformed and non-deformed unit cells. These limits are ‘dislocation’ is called, and when force is applied to the metal It causes the metal to change shape by moving. The more dislocations a metal has, the softer it is.
So the harder it is, the more fragile it is.. However, irregularities in the metal can limit the movement of dislocations. This is what makes this new alloy both strong and durable.
in CrCoNi (chrome, cobalt, nickel) the researchers identified a specific sequence of three dislocation blocks. When force is applied to the alloy, these dislocations change shape instead of destroying it. Therefore vulnerability is minimized.
If you want to take a closer look at the research, you can take a look here. What do you think? Please don’t forget to share your thoughts with us in the comments.
Ashley Johnson is a science writer for “Div Bracket”. With a background in the natural sciences and a passion for exploring the mysteries of the universe, she provides in-depth coverage of the latest scientific developments.