Specialists from the South Ural State University (SUSU) have developed a new economical high-entropy alloy that possesses ultra-high hardness and excellent wear resistance.
The development could be a significant step in reducing the cost of high-entropy alloys (HEAs). Typically, HEAs contain at least five elements, which gives them increased strength and ductility.
To create a more affordable alloy, Chelyabinsk scientists used a method of cyclic stamping in a closed volume, which allows for significant grinding of the metal's structural elements down to nanoscale sizes. Thanks to this process, the alloy's microhardness increased by 168%.
A feature of the development was the use of cheaper iron, which replaces one of the standard elements of the alloy. This allowed increasing its atomic fraction to 40%, while maintaining or even improving mechanical characteristics such as strength and wear resistance.
Earlier, www1.ru reported that a technology for 3D printing of heat-resistant alloys was created in Yekaterinburg.
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