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High-hardness titanium-based composite material and preparation method thereof

A technology of titanium-based composite materials and high hardness, which is applied in the field of titanium-based composite materials, can solve problems such as hindering development, and achieve the effects of increasing activity, promoting uniformity, and avoiding clusters

Pending Publication Date: 2022-02-18
西安稀有金属材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing research mainly focuses on improving the yield strength and tensile strength of titanium alloys, but there are few studies on high-hardness titanium alloys, which hinders the development of my country's aerospace, weaponry and other industries to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The high-hardness titanium-based composite material of this embodiment is composed of the following components in mass percentage: Al 4.8%, Mo 6%, V 3%, Cr 1.5%, Fe 1.6%, TiC 3.3%, and the balance is Ti, which is inevitable Impurities.

[0027] This embodiment includes the following steps:

[0028] Step 1. Mix the micron-sized TiC particles and the titanium sponge particles evenly, and then seal and wrap them with aluminum foil to obtain an alloy package; the particle size of the micron-sized TiC particles is 2 μm to 5 μm;

[0029]Step 2. Place the alloy package obtained in step 1 on the bottom of the non-consumable vacuum arc furnace crucible, and then mix Al-85V master alloy, Ti-32Mo master alloy, Ti-32Fe master alloy, electrolytic chromium and aluminum beans evenly Put it on the upper part of the alloy ladle, and then carry out 6 times of non-consumable vacuum arc melting to obtain ingots;

[0030] Step 3. Homogenize the ingot obtained in step 2, and then perform h...

Embodiment 2

[0034] The high-hardness titanium-based composite material of this embodiment is composed of the following mass percentages: Al 5.5%, Mo 5%, V 4%, Cr 1%, Fe 2%, TiC 5%, and the balance is Ti, which is inevitable Impurities.

[0035] This embodiment includes the following steps:

[0036] Step 1. Mix the micron-sized TiC particles and the titanium sponge particles evenly, and then seal and wrap them with aluminum foil to obtain an alloy package; the particle size of the micron-sized TiC particles is 2 μm to 5 μm;

[0037] Step 2. Place the alloy package obtained in step 1 on the bottom of the non-consumable vacuum arc furnace crucible, and then mix Al-85V master alloy, Ti-32Mo master alloy, Ti-32Fe master alloy, electrolytic chromium and aluminum beans evenly Put it on the upper part of the alloy ladle, and then carry out 7 times of non-consumable vacuum arc melting to obtain ingots;

[0038] Step 3. Homogenize the ingot obtained in step 2, and then perform hot rolling treatme...

Embodiment 3

[0042] The high-hardness titanium-based composite material of this embodiment is composed of the following components in mass percentage: Al 4.5%, Mo 5.6%, V 3.5%, Cr 2%, Fe 1%, TiC 4%, and the balance is Ti, which is unavoidable of impurities.

[0043] This embodiment includes the following steps:

[0044] Step 1. Mix the micron-sized TiC particles and the titanium sponge particles evenly, and then seal and wrap them with aluminum foil to obtain an alloy package; the particle size of the micron-sized TiC particles is 2 μm to 5 μm;

[0045] Step 2. Place the alloy package obtained in step 1 on the bottom of the non-consumable vacuum arc furnace crucible, and then mix Al-85V master alloy, Ti-32Mo master alloy, Ti-32Fe master alloy, electrolytic chromium and aluminum beans evenly Put it on the upper part of the alloy ladle, and then carry out 8 times of non-consumable vacuum arc melting to obtain ingots;

[0046] Step 3. Homogenize the ingot obtained in step 2, and then perfor...

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Abstract

The invention discloses a high-hardness titanium-based composite material. The titanium-based composite material is prepared from, by mass, 4.5%-5.5% of Al, 5%-6% of Mo, 3%-4% of V, 1%-2% of Cr, 1%-2% of Fe, 3%-5% of TiC and the balance Ti and inevitable impurities. Through the solution treatment strengthening effect of Al, Cr, Fe and Mo, TiC particles and a Ti matrix have good stress decomposition and strain coordination, and the hardening effect is achieved. The invention further provides a preparation method of the high-hardness titanium-based composite material, the micron-sized TiC particles and the raw materials are subjected to non-self-consumption vacuum arc melting, then homogenization, hot rolling, solid solution and aging are sequentially carried out, the high-hardness titanium-based composite material is obtained, the hardness can reach 50 HRC or above, the preparation method is simple in process. The invention is widely applied to the fields of spaceflight, military industry, civil use and the like, and economic benefits are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of titanium-based composite materials, and in particular relates to a high-hardness titanium-based composite material and a preparation method thereof. Background technique [0002] Titanium alloys are widely used in aerospace, weaponry, medical and chemical industries because of their high specific strength, good mechanical properties, biocompatibility and corrosion resistance. However, with the advancement of science and technology, people have put forward higher requirements for the performance of titanium alloys, especially in the fields of aerospace and weaponry, the demand for weight reduction and lightweight has become increasingly obvious, and titanium alloys are used to replace steel and superalloys It has become an important direction for the research and development of titanium alloys. However, compared with steel and high-temperature alloys, titanium alloys have a significant gap in hardness. T...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03C22F1/18
CPCC22C14/00C22C32/0052C22C1/1036C22C1/1005C22F1/183C22C1/1052
Inventor 辛超陈曦赵婧赵彬吴金平赵恒章潘晓龙
Owner 西安稀有金属材料研究院有限公司
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