If you are interested in High Entropy Steels you can follow the research of Dierk Raabe.

https://www.researchgate.net/profile/Dierk_Raabe

Thank you Jon Mikel Sanchez for your suggestion

I have a question concerning  production of high entropy steels. Is it possible to receive such properties in welds during welding?

Dear Professor Dierk Raabe,

Thank you very much for sharing your detailed explanation and clarification between High entropy alloys and High entropy steels. I’d also gone through your updated materials starting from research articles to review papers which fascinate me and I keep working on it …. :)

Dear Aleksei Obrosov,

Yes. You are right. The similar kind of properties are achieved and you may refer the below articles which might quench your thirst.

Dear Arul Mozhi Varman,

Thank you for these publications. However I did not find there enough explanation or at least any words about "High entropy behaviour" after welding

It is reported that the fusion zone has attained the strength of 1000 MPa with >70% elongation in par with base metal. And , yes ! As a whole, the strength of the welded sample is next to base metal. But, further research is underway to control the solidification and common weld defects !!!

Added some relevant materials.

Entropy: A concept that is not a physical quantity

https://www.researchgate.net/publication/230554936_Entropy_A_concept_that_is_not_a_physical_quantity

Thank you Shufeng.

Dear Arul Mozhi Varman

According to the definition of high entropy alloys, they are made of 5 or more than 5 elements. How can they be affordable? How can it be economically justified?

Dear Masume Nozari Nezhad,

Thank you for your interest. Here, I would like to emphasize that depending on the application and demand, one can use Medium Entropy alloys instead of High Entropy alloys which is getting popular in these days. To quench your thirst on economic perspective, please refer Prof. Dierk Raabe's publication and I hope you would be fascinated about its development.