2results about How to "Achieve high strength" patented technology

The object of this invention is to provide a steel plate with excellent ductility and expandability, and a yield strength (YP) of 450 MPa or higher, and a method for manufacturing the same. A steel plate comprising, by mass%, C: 0.05% or more and 0.13% or less, Si: 0.01% or more and 0.04% or less, Mn: 0.1% or more and 0.6% or less, P: 0.02% or less, S: 0.02% or less, Al: 0.01% or more and 0.10% or less, N: 0.0005% or more and 0.0040% or less, Ti: 0.005% or more and 0.030% or less. The composition consists of Nb: 0.005% or more and 0.030% or less, Mo: 0.01% or more and 0.05% or less, B: 0.0005% or more and 0.0050% or less, with the balance being iron and unavoidable impurities. The microstructure is ferrite with an area ratio of 90% or more. The total amount of Ti and Nb, in the form of carbonitrides, is 0.005% or more by mass.

The application provides a high-impact-resistance aluminum alloy material, which comprises an impact-resistant outer layer, a gradient transition layer and an energy-absorbing buffer structure inner layer, the impact-resistant outer layer is composed of an aluminum alloy material and a three-dimensional carbon fiber fabric, the gradient transition layer is composed of an aluminum alloy material and a ceramic reinforced non-woven fabric layer, and the energy-absorbing buffer structure inner layer is a porous foam alloy layer. The application further provides a preparation method of the high-impact-resistance aluminum alloy material, and the impact resistance of the aluminum alloy is improved through the cooperation of the three-layer structure of the impact-resistant outer layer, the gradient transition layer and the energy-absorbing buffer structure inner layer.