8 results about "Principal element" patented technology

The invention relates to the technical field of computational simulation, in particular to a modeling method for constructing any chemical short-range ordered multi-principal element alloy structure, which comprises the following steps: setting target values and convergence conditions of chemical short-range ordered parameters; calculating parameter values of chemical short-range order parameters of the initial configuration; calculating an initial difference value; judging whether the initial difference value meets a convergence condition or not; if yes, outputting an atomic configuration; if not, carrying out iterative operation; the iterative operation process comprises the following steps of: randomly exchanging two atomic positions to obtain a new configuration; calculating a difference value between a parameter value number of the chemical short-range order parameter of the new configuration and a target value to obtain an exchanged difference value; judging whether the difference value after exchange is smaller than the difference value before exchange or not; if yes, current exchange is accepted; and after the convergence condition is met, outputting the atomic configuration. According to the method, the function of directly generating a specific structure from structural features is achieved, and atom configuration of any chemical short-range ordered feature can be customized in a wide component space.

The invention belongs to the technical field of alloys, and provides a lightweight refractory multi-principal-element alloy with excellent high-temperature creep property, and a preparation method and application thereof. The general formula of the light refractory multi-principal-element alloy with the excellent high-temperature creep property is TiaVbAlcCrdMoe, wherein 43% < = a < = 48%, 43% < = b < = 48%, 2% < = c < = 8%, 2% < = d < = 8% and 1% < = e < = 5%, a + b + c + d + e = 100%, and a, b, c, d and e are mole percentages. The alloy presents an isometric crystal structure in a complete recrystallization state in a thermal mechanical treatment state, the phase structure is a single-phase body-centered cubic BCC structure, the alloy has low density and shows excellent creep property at 650 DEG C / 100 MPa, the creep time exceeds 90 h, and the creep elongation is lower than 10%.

The invention belongs to the technical field of damping alloys, and particularly relates to an iron-containing damping alloy component design method based on entropy regulation and control. The invention discloses a design method of an iron-containing damping alloy based on entropy regulation and control. The design method comprises the following steps: selecting principal elements Fe, Cr, Mn, Co, Ni, Ti, Cu, Al, Mo and RE; the element molar content of Fe-Cr-Ni-X is used as a variable, X is one or more elements except Fe, Cr and Ni, the mixed entropy () and the valence electron concentration (VEC) of the alloy are calculated, and when R of the alloy is larger than or equal to 1.25, and VEC is larger than or equal to 7.15 and smaller than or equal to 7.95, the damping performance Q-1 of the alloy is larger than or equal to 0.02. According to the design method of the high-entropy damping alloy, the types and the content of elements in the alloy are adjusted according to the entropy value and the valence electron concentration of the alloy, and therefore the iron-containing high-entropy damping alloy with the high damping performance is obtained. And the component design efficiency of the iron-containing high-entropy damping alloy is improved, and the alloy development period is shortened.

The invention relates to the technical field of high-temperature alloys, in particular to an additive manufacturing high-temperature alloy product with excellent high-temperature strength and plasticity and a preparation method thereof, and the alloy product comprises the following components in percentage by mass: 10%-18% of Cr, 23.1%-28% of Co, 3.6%-6% of Mo, 1.9%-6% of W, 1%-3% of Al, 1.5%-4.75% of Ti, 1.01%-3% of Nb, 0%-5% of Ta, 0%-8% of Fe, 0.01%-0.5% of C, 0%-0.05% of B, 0%-0.2% of Zr, 0%-0.5% of O, 0-0.2% of N and the balance of Ni. By controlling the content of main elements, the problems of poor printability, poor high-temperature creep resistance, poor high-temperature strength and plasticity and difficulty in balancing each index are solved.

The application discloses a multi-principal-element low-modulus Ti-Zr-based medium-entropy alloy and a preparation method thereof. 100‑ 10x Nb 4x Ta 4x Hf 2x Wherein, 1<=x<=4. The application is based on the synergistic effect between the TiZr alloy and the Hf, Nb and Ta alloys, the alloy molar ratio between the two is controlled, the mixed entropy and the valence electron concentration of the alloy are improved, the beta phase forming ability is enhanced, the elastic modulus of the alloy is reduced, and the ductility of the alloy is improved, so that the application scenarios of the alloy material are expanded.

An outlet element (1) for a sanitary fitting is provided, which outlet element (1) has a main element (2) and a valve device (3) which is connected to the main element (2) and can be adjusted relative to the main element (2) between at least two switching positions in order to switch over between at least two separate water conduits (4, 5). In order for it to be possible for the outlet element (1) to be fixed to an outlet of a sanitary fitting in as simple a way as possible, the outlet element (1) has a threaded coupling (13) with an external thread (19), the threaded coupling (13) being formed on the main element (2).

Disclosed is a multi-principal element Al—Co—Cr—Cu—Fe—Ni high-entropy alloy (HEA) coating. The multi-principal element Al—Co—Cr—Cu—Fe—Ni HEA coating includes metal elements Al, Cu, Co, Cr, Fe, and Ni in a molar ratio of Al:Cu:Co:Cr:Fe:Ni of 0.7:0.3:1:1:1:1. Raw materials for Al and Cu are metal powders. A raw material for Co, Cr, Fe, and Ni is a CoCrFeNi alloy powder. A molar ratio of Co, Cr, Fe, and Ni in the CoCrFeNi alloy powder is 1:1:1.

The application provides a eutectic multi-component alloy design method based on a binary phase diagram and a natural mixing criterion, and belongs to the technical and preparation fields of alloy materials. The method is as follows: firstly, a eutectic point of base elements and added elements is determined through an alloy phase diagram. The eutectic composition point is proportioned, a cast state organization after arc melting is cut, EDS analysis is carried out, the composition of different eutectic regions is weighted and averaged, and the element content of the eutectic region, that is, the element content of the eutectic multi-component alloy in the cast state, is obtained. The application overcomes the difficulty of finding the eutectic point in the multi-component phase diagram, and secondly, the eutectic point of the multi-component alloy does not need to be determined by the calculation simulation of the thermodynamic data software and the trial-and-error method for multiple times; by introducing the mathematical weighted average method, the experimental errors caused by the defects of the selected region organization, element segregation and the like can be effectively eliminated, and the performance in the cast state can be further improved.