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A strengthening method of metal particle reinforced amorphous composite material

A technology of amorphous composite materials and metal particles, which is applied in the field of plastic deformation and toughening of metal particles reinforced amorphous composite materials, can solve the problems of insufficient tightness inside the amorphous composite material and unsatisfactory interface bonding, and achieves the interface condition. Ideal, density-increasing, strength-increasing effects

Inactive Publication Date: 2019-08-20
NAVAL UNIV OF ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can not only improve the strength of the metal particle reinforcement in the metal particle reinforced amorphous composite material, but also solve the problem that the interior of the amorphous composite material is not tight enough, and the interface between the matrix and the second phase is not ideal, thereby improving the strength of the amorphous composite material. The overall strength of the composite material, and even improve other properties such as formability, corrosion resistance, etc.

Method used

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  • A strengthening method of metal particle reinforced amorphous composite material
  • A strengthening method of metal particle reinforced amorphous composite material
  • A strengthening method of metal particle reinforced amorphous composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Choose (40%) W P / Zr41.2Ti13.8Cu12.5Ni10Be22.5 amorphous composite metal rod is the material of the embodiment. As mentioned earlier, the strain rate of 0.008s was selected -1 , the relationship between the yield strength and temperature of metal W and Zr41.2Ti13.8Cu12.5Ni10Be22.5 amorphous alloy was measured by high temperature compression testing machine as follows image 3 shown. It can be seen from the figure that the isointense temperature Te of metal W and Zr41.2Ti13.8Cu12.5Ni10Be22.5 amorphous alloy is 430°C, and the crystallization temperature Tx of matrix amorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5 is 497°C, so the temperature rise of the amorphous alloy during the test phase does not exceed 497°C. The recrystallization temperature of the reinforcement metal W is 1188°C, so the temperature rise of the reinforcement during the test phase does not exceed 1188°C. The (40%) W is selected according to the isointense temperature Te P The enhanced extrusion temp...

Embodiment 2

[0043] Adopt the same amorphous composite material of embodiment 1, select different extrusion dies, as Figure 5 As shown, the extrusion die extrusion ratio is 2:1, and the exit angle is 120°. A (40%) W with a diameter of 12mm P / Zr41.2Ti13.8Cu12.5Ni10Be22.5 Amorphous composite rods are put into extrusion dies for extrusion. According to the above test results, the extrusion temperature was selected as 380°C, and the strain rate was selected as 0.008s -1 . After extrusion, the (40%) W P The diameter of the / Zr41.2Ti13.8Cu12.5Ni10Be22.5 amorphous composite material bar becomes 6mm. After measurement, (40%)W P After the extrusion strengthening of the / Zr41.2Ti13.8Cu12.5Ni10Be22.5 amorphous composite material, the strength is increased by about 10%.

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Abstract

The invention provides a reinforcing method of a metal particle reinforced amorphous composite. Firstly, a mechanical performance testing instrument is utilized for obtaining the relation curve between the yield strength and temperature of each of a matrix amorphous alloy and an annealed reinforced body, and the equal-strength temperature Te equal to the yield strength of the reinforced body and the matrix amorphous composite is found out from the two curves; and then, the extrusion temperature is selected to be lower than the equal-strength temperature Te by 30-50 DEG C, the extrusion speed is selected to range from 0.001s-1 to 0.01s-1, and an extrusion mold is adopted for carrying out extrusion deformation reinforcing on the amorphous composite under the conditions of the selected extrusion temperature and extrusion speed. According to the method, hot extrusion deformation is adopted, compared with an amorphous composite which is not subjected to extrusion deformation, the overall strength is improved, the forming performance of the amorphous composite and the density of an amorphous matrix in an extrusion part are increased, holes are reduced, the interface condition of the matrix and the reinforced body is more ideal, and corrosion resistance and other properties are also improved.

Description

technical field [0001] The invention belongs to the technical field of strengthening and toughening and thermoforming of amorphous composite materials, and in particular relates to a method for plastic deformation and strengthening and toughening of metal particle reinforced amorphous composite materials. Background technique [0002] The metal particle reinforced amorphous composite material includes two components: the matrix amorphous alloy and the metal particle reinforced phase. During plastic deformation, metal particles interact with shear bands in amorphous alloys, preventing the expansion of shear bands and inducing the formation of multiple shear bands. Therefore, compared with amorphous alloys, it has more excellent plasticity, toughness and formability. In aerospace, precision instruments, military chemical industry and other fields, amorphous composite materials have broader application prospects. [0003] In the stress process of metal particle reinforced amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18
Inventor 胡会娥苏小红陆洲
Owner NAVAL UNIV OF ENG PLA