Korean researchers have discovered a way to produce new low-density steels that are stronger, lighter and more resilient than traditional steels used in many production areas. Their paper, published in Nature, describes the entire process of preparation, and researchers hope that in the near future this new steel will replace traditional steel in certain areas.
The biggest application area of ​​steel is to manufacture cars. In recent years, as the engine is also looking for lighter alternatives, the demand for steel is gradually declining. Because of the iron, the weight of steel is always a big problem. People will add other light metals, but it will make it tougher or more fragile. According to a recent report by the physicist organization network, in this new attempt, researchers report that they have found a new way of mixing that can produce low-density steel and is stronger than expensive titanium alloys. More resilient.
The researchers explained that the technical secret lies in the formation of new structures during the heat treatment and the use of the right mix of ingredients, in addition to the addition of traditional iron, carbon, aluminum and manganese, also added nickel. They found that nickel can interact with aluminum during the annealing process, producing nanoscale B2 crystals. To ensure uniform distribution of crystals in the metal, the researchers studied the samples under an electron microscope. Chemists have confirmed that B2 crystals have shear resistance, and steel containing such crystals becomes extremely strong.
Researchers have teamed up with POSCO, the world's largest steel manufacturer, to continue to see if this new steel can be used in cars or even aircraft. The first step in the plan is to see if the new steel preparation process is scalable.
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