China BWTG Special Steel Technology Group announced on the 12th that the company's "super steel" research and development team has made significant progress in the research of "super steel" resistance to fracture and fracture, that is, toughness, and its performance is higher than that of current aviation and aerospace steel.
According to the traditional scientific view, the three properties of metal yield strength, ductility and toughness have a trade-off relationship, that is, when the function of one of the properties is improved, the remaining one or two will be reduced accordingly, and the three cannot Get. In industrial applications, high-end steel must have good fracture toughness, and durability can also avoid accidents caused by premature failure of components. However, increasing the strength of the steel will reduce its toughness, resulting in increased brittleness of the material, and the related research work is very arduous.
China BWTG Special Steel Technology Group cooperates with the Institute of Metal Materials, Chinese Academy of Sciences to increase the material's yield strength to start a new toughening mechanism to greatly improve the toughness of steel materials. The three important indicators of ductility and toughness have reached a high level, and their efficiency is higher than that of the current maraging steel used in aerospace, but the cost is only one-fifth of it.
Super steel will be widely used in high-strength bridge cables, body armor, aerospace and automobiles.