4 results about "Principal element" patented technology

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%.

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.