TTK Ciar Posted December 11, 2022 Share Posted December 11, 2022 https://phys.org/news/2022-12-toughest-material-earth.amp Link to comment Share on other sites More sharing options...
ZORK Posted December 11, 2022 Share Posted December 11, 2022 5 hours ago, TTK Ciar said: https://phys.org/news/2022-12-toughest-material-earth.amp Very interesting.....Thank You Link to comment Share on other sites More sharing options...
Zadlo Posted January 22 Share Posted January 22 On 12/11/2022 at 2:11 AM, TTK Ciar said: https://phys.org/news/2022-12-toughest-material-earth.amp The article by itself doesn't show any advantages of high entropy alloys in terms of protection... But... as I'm working on them (Cantor alloys) a bit in these matters their main advantages are very high ductility (in comparison to armour-grade steel) and high fracture toughness. Also small changes in chemical composition of these alloys can lead to very different mechanical characteristics. And thus can create the material which has f.e. Rm = 1000 MPa and 60% of elongation. Link to comment Share on other sites More sharing options...
KV7 Posted January 26 Share Posted January 26 (edited) In semi related news, a recent paper from China outlines a semi-novel method for producing ultra tough and affordable steel: Quote Mechanically strong and ductile load–carrying materials are needed in all sectors, from transportation to lightweight design to safe infrastructure. Yet, a grand challenge is to unify both features in one material. We show that a plain medium-manganese steel can be processed to have a tensile strength >2.2 gigapascals at a uniform elongation >20%. This requires a combination of multiple transversal forging, cryogenic treatment, and tempering steps. A hierarchical microstructure that consists of laminated and twofold topologically aligned martensite with finely dispersed retained austenite simultaneously activates multiple micromechanisms to strengthen and ductilize the material. The dislocation slip in the well-organized martensite and the gradual deformation-stimulated phase transformation synergistically produce the high ductility. Our nanostructure design strategy produces 2 gigapascal–strength and yet ductile steels that have attractive composition and the potential to be produced at large industrial scales. https://www.researchgate.net/publication/367089458_Ductile_2-GPa_steels_with_hierarchical_substructure Edited January 26 by KV7 Link to comment Share on other sites More sharing options...
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