6 results about "Thermomechanical processing" patented technology

This invention discloses a short-process rapid solidification / powder metallurgy technology and its applications. The short-process rapid solidification / powder metallurgy technology of this invention includes the following steps: Step 1: Using metal wire or powder as raw material, a bulk blank with a thickness of 1-10 mm is deposited on a substrate using thermal spraying technology; the metal is selected from magnesium, titanium, copper, iron, nickel, zinc, aluminum, or their alloys; Step 2: The bulk blank is thermomechanically processed to obtain a sheet product; the thermal spraying technology includes flame spraying, supersonic spraying, arc spraying, plasma spraying, or cold spraying; the thermomechanical processing includes hot rolling, hot extrusion, or hot forging. This invention significantly shortens the preparation process, consumes less energy, has low overall production costs, and has wide applicability, and can be applied to the preparation of metal matrix composites, ultrafine-grained metal materials, heterostructure metal materials, layered structure metal composites, etc.

This invention provides a Y₂O₃ ceramic particle-reinforced dual-phase lightweight refractory high-entropy alloy, its preparation method, and its applications. The general formula for Y₂O₃ ceramic particle-reinforced dual-phase lightweight refractory high-entropy alloy is Ti. a Zr b V c Nb d Al e -(Y2O3) f The alloy exhibits a molar percentage of 52% ≤ a ≤ 57%, 8% ≤ b ≤ 12%, 12% ≤ c ≤ 18%, 8% ≤ d ≤ 12%, 9% ≤ e ≤ 13%, and 0.02% ≤ f ≤ 0.08%, with a + b + c + d + e + f = 100%. In the as-cast state, the alloy displays a typical dendritic morphology, with a phase structure consisting of a body-centered cubic (BCC) structure and a Y₂O₃ ceramic phase. It not only possesses low density but also exhibits excellent tensile yield strength and plasticity at room temperature. Thermomechanical processing improves the size and distribution of the Y₂O₃ ceramic phase, further enhancing the alloy's yield strength.

This invention discloses an efficient magnetic domain refinement method for ultra-low loss oriented silicon steel, relating to the field of steel material technology. The method includes: raw material preparation; hot rolling and final rolling; multi-stage thermomechanical processing; controlled suppression phase formation; secondary re-junction and magnetic field-induced selective growth; surface microstructure fabrication; low-temperature domain refinement annealing and alternating magnetic field coupling; segmented cooling and quality inspection. This invention, through controlled nanoscale suppression phase engineering, forms a high-density and uniform nanoscale suppression phase within the matrix, serving as pinning sites for grain boundaries and subgrain boundaries. This controls grain boundary migration dynamics during high-temperature secondary re-junction, overcoming the problems of abnormal grain growth and microstructure instability caused by uneven distribution and large size dispersion of traditional suppression phases. This avoids the root cause of large magnetic domains, improves the controllability and repeatability of the secondary re-junction process, obtains a more uniform orientation grain size distribution, and reduces localized magnetic domain enlargement and iron loss fluctuations caused by uneven grain size.

This invention discloses a high-strength, lightweight aluminum-based medium-entropy alloy and its preparation method, relating to the technical field of lightweight medium-entropy alloy materials. The raw material composition of this aluminum-based medium-entropy alloy, expressed as Al in atomic percentage, can be... a Ti b Cr c M d The alloy comprises 45-65% Al, 10-30% Ti, 15-30% Cr, and 5-10% M, where M is one or more of Sc, V, and Mn, and a+b+c+d = 100. The specific preparation method is as follows: Pretreated raw materials are weighed according to the proportions and placed in a vacuum arc melting furnace or vacuum induction melting furnace. The alloy is melted under high-purity argon protection and held at a constant temperature to ensure uniform composition. The molten alloy is then poured into a preheated cast iron mold or water-cooled copper mold and allowed to cool naturally to room temperature to obtain an aluminum-based medium-entropy alloy ingot. The aluminum-based medium-entropy alloy prepared by this invention possesses both low density and high strength. Its as-cast microstructure is predominantly a solid solution phase, exhibiting excellent strength-plasticity matching. This allows for the fabrication of lightweight, high-performance cast structural parts without the need for complex thermomechanical processing.

The present disclosure concerns a method for obtaining a component made of a palladium (Pd)-indium (In) alloy comprising between 46 and 56 wt % Pd, between 44 and 54 wt % In, between 0 and 10 wt % of silver (Ag), gold (Au), platinum (Pt), silicium (Si), or tin (Sn), or a combination of these elements, between 0 and 2 wt % of a grain refiner, between 0 and 5 wt % of aluminum (Al), and a maximum of 1.5 wt % of other elements. The method comprises the steps of providing the Pd—In alloy, and thermomechanical processing the Pd—In alloy with hot pressing at a heating temperature between 1050° C. and 1150° C., at controlled deformation rate of 0.1 to 100 mm / h with an applied load between 1 and 500 MPa, and with a deformation ratio between 1.2 and 15.

An intelligent, simulation-based system for the microstructural development of hydrogen embrittlement-resistant vanadium medium-carbon steel alloys for aerospace applications, comprising: • an alloy composition optimization module; • a thermodynamics and phase transformation simulation module; • a microstructure development module; • a hydrogen diffusion and storage simulation module; • an artificial intelligence optimization module; • a thermomechanical processing simulation module; • a finite element module for aerospace stress analysis; • a digital twin validation module; • a corrosion and environmental prediction module; and • a real-time structural condition monitoring and adaptive control aerospace module.the modules work together cooperatively to produce optimized vanadium medium carbon steel alloy compositions and processing parameters configured to improve resistance to hydrogen embrittlement, fracture toughness, fatigue strength, corrosion resistance and structural reliability in aerospace applications.