A plastic multi-principal laves-based intermetallic compound and its preparation method

A base metal and compound technology, applied in the field of multi-principal Laves-based intermetallic compounds and their preparation, can solve the problems of easy softening, poor Laves phase room temperature plasticity, low solid solution hardness, etc., and achieves good high temperature aging strengthening effect, good high temperature The effect of structural stability

Active Publication Date: 2017-09-22
山东鑫盛源能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the poor plasticity of the Laves phase at room temperature in the existing binary alloy system, and the Laves phase / solid solution two-phase alloy has problems such as low solid solution hardness and easy softening at high temperature

Method used

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  • A plastic multi-principal laves-based intermetallic compound and its preparation method
  • A plastic multi-principal laves-based intermetallic compound and its preparation method
  • A plastic multi-principal laves-based intermetallic compound and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A plastic multi-principal Laves-based intermetallic compound whose main component is FeCoNiCr 0.5 ZrCu x , prefabricated two kinds of Laves-based intermetallic compounds in this embodiment, which are respectively denoted as FeCoNiCr 0.5 ZrCu 0.5 (Fe, Co, Ni, Cr, Zr and Cu molar ratio is 1:1:1::0.5:1:0.5), FeCoNiCr 0.5 ZrCu (Fe, Co, Ni, Cr, Zr and Cu molar ratio is 1:1:1::0.5:1:1), the intermetallic compound is prepared by electric arc furnace melting method, the selected Fe, Co, Ni, Cr, The purity of the Zr and Cu raw materials are all ≥ 99%. An appropriate amount of raw materials is taken from the base metal, and the oxide skin on the surface of the raw metal is removed by mechanical grinding, and then the two Laves-based intermetallic compounds in this embodiment are designed. The molar ratio is converted into a weight ratio, and the raw materials are weighed by an electronic balance with an induction capacity of 0.1 mg, and mixed uniformly. Subsequently, the mixe...

Embodiment 2

[0046] A plastic multi-principal Laves-based intermetallic compound whose main component is FeCoNiCr 0.5 ZrCu 0.75 (Fe, Co, Ni, Cr, Zr and Cu molar ratio is 1:1:1::0.5:1:0.75), prepared by medium frequency induction furnace smelting method, selected Fe, Co, Ni, Cr, Zr and Cu The purity of the raw materials is ≥99%. An appropriate amount of raw materials is taken from the base metal, and the oxide skin on the surface of the raw metal is removed by mechanical grinding, and then the two Laves-based intermetallic compounds in this example are converted by the designed molar ratio For the weight ratio, use an electronic balance with an induction capacity of 0.1 mg to weigh the raw materials and mix them evenly. Subsequently, the mixed raw materials were placed in the copper crucible in the WK non-consumable vacuum electric arc furnace developed by Shenyang Vacuum Technology Research Institute, and the furnace body was evacuated. When the vacuum degree reached 5×10 -3 Argon (high-...

Embodiment 3

[0049] Same as Example 1, the difference is: the melting current is set to 250±30A, and the melting time is 30s. After the melting is uniformly cooled, the alloy block is turned over and repeated for smelting, and this is repeated 8 times to ensure that all elements of the alloy are evenly smelted. Finally, vacuum suction casting equipment is used to cast the smelted raw materials into ingots solidified on water-cooled copper molds to obtain solidified samples. The solidified samples were respectively kept in a vacuum resistance furnace at 750°C, 950°C and 1050°C for 2 hours and then air-cooled. Subsequently, X-ray diffractometer, optical microscope, scanning electron microscope and microhardness tester are used to detect the metallographic phase and properties of the material. The XRD results show that the Laves phase diffraction peak intensity of the material prepared under the conditions of this example is significantly higher than that of the bcc solid solution phase, indic...

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Abstract

The invention discloses a plastic multi-principal Laves-based intermetallic compound and a preparation method thereof, belonging to the field of alloy material design. The composition element of the present invention is FeCoNiCr0.5ZrCux, the value range of x is 0.5~1, adopts electric arc furnace smelting method to smelt and then heat treatment to obtain plastic multi-principal Laves-based intermetallic compound, its main phase is Laves intermetallic The compound has ultra-high temper softening resistance and good high temperature aging strengthening effect, and also has a certain room temperature compression plasticity, which can be used in industries that require stable mechanical properties and a certain room temperature compression plasticity under the condition of close to 950 °C. High temperature structural materials field.

Description

technical field [0001] The invention belongs to the field of alloy material design, and more specifically relates to a plastic multi-principal Laves-based intermetallic compound and a preparation method thereof. Background technique [0002] AB 2 Type Laves intermetallic compounds have good structural stability and high temperature performance, and they also have good application prospects in the fields of hydrogen storage and electromagnetic materials. However, due to the intrinsic brittleness of the Laves phase topological hexagonal close-packed structure, its room temperature deformation ability is almost zero. At present, the development of the Laves phase is mainly concentrated in the field of binary and ternary alloys. The content of a single component in the composition is generally greater than 50%, and the typical composition mainly includes NbCr 2 、TiCr 2 、ZrCr 2 、ZrCo 2 , ZrNi 2 、Zr(Cr,Fe) 2 Wait. Attempts have been made internationally to develop Laves-ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02
Inventor 张晖李维火
Owner 山东鑫盛源能源股份有限公司
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