3 results about "Mg composite" patented technology

The invention belongs to the technical field of preparation of light metal plates, and particularly relates to a preparation method of a heterogeneous aluminum alloy composite plate. The method comprises the following steps: preheating an Al-Zr plate sample, dipping the Al-Si alloy in a semi-molten state, and cooling to obtain an Al-Zr-Si composite sample; the method comprises the following steps: preheating an Al-Zr-Si composite sample, dipping the Al-Mg-Si alloy in a semi-molten state, and cooling to obtain an Al-Zr-Si-Mg composite sample; and the Al-Zr-Si-Mg composite sample is pretreated and subjected to accumulative ply rolling, and the heterogeneous aluminum alloy composite board is obtained. The prepared heterogeneous aluminum alloy composite board is of a layered gradient heterostructure, the mechanical property layout of'toughness-strength-stronger 'from outside to inside is achieved, the bearing capacity of each layer is fully played, the best matching of strength and plasticity is achieved, and the performance requirements of shells of aerospace and electronic equipment are met.

This invention provides a Gr / Al-Mg2Si-Mg composite powder, its preparation method, alloy components, and end products. The composite powder comprises 6.0%~14.0% Mg, 1.0%~6.0% Si, 0.1%~0.6% Mn, 0.1%~0.2% Ti, 0.28%~0.32% Al-5Ti-B, 1.0%~8.0% Mg2Si, and 0.5%~3% graphene Gr, with the balance being Al. By increasing the Mg content and adding a small amount of Si, the content of the Mg2Si reinforcing phase is increased. Simultaneously, in addition to introducing small amounts of Mn and Ti, graphene Gr is introduced as a reinforcement to significantly improve mechanical properties. Through forming processes such as selective laser melting, alloy components with high yield strength, high tensile strength, and high elongation can be formed, filling the gap in low-cost, high-strength aluminum alloy systems produced by selective laser melting.

This invention belongs to the field of materials technology, specifically relating to a biomedical nanocrystalline Ti-Mg alloy coating with a micro / nano porous structure, its preparation method, and its applications. This invention constructs a nanocrystalline Ti-Mg alloy coating with a micro / nano porous structure on the surface of pure titanium or titanium alloys. Specifically, its interior contains micron-sized macropores, while its pore walls contain numerous submicron to nano-sized micropores. The framework material is nanocrystalline, thereby achieving a synergistic enhancement of the bioactivity and adjustment of the elastic modulus of the Ti-Mg alloy through porous structures of different scales. Simultaneously, the nanocrystalline structure strengthens the mechanical properties of the porous coating. Ti acts as the framework, providing mechanical support, while Mg serves as the bioactive and micro / nano-porous material. When the Ti-Mg composite material is implanted into the human body, Mg gradually degrades, which can improve the material's bioactivity (inducing new bone formation).