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In-situ synthesis process of polyelement reinforced titanium base composite material

A titanium-based composite material and in-situ synthesis technology, which is applied in the field of in-situ synthesis of multi-component reinforced titanium-based composite materials, can solve the problems of restricting titanium-based composite materials, complicated processes, and increasing the cost of titanium-based composite materials, and achieves low cost. Effect

Inactive Publication Date: 2005-04-27
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main preparation methods of in situ self-generated titanium matrix composites include rapid solidification (RSP), mechanical alloying (MA), powder metallurgy (PM), combustion assisted casting (CAC), and reactive hot pressing (RHP). etc. The preparation of titanium-based composites by these methods requires special equipment and complicated processes, thus increasing the cost of titanium-based composites and limiting the practical application of titanium-based composites
[0004] After searching the existing technical literature, it is found that the Chinese patent name: TiB and rare earth oxide reinforced titanium matrix composite material preparation method, patent number: ZL02111575.3, the patent uses the common smelting process to prepare TiB and rare earth oxide reinforced Although the process is simple, its reinforcement is binary, so it is impossible to prepare multi-component and multi-scale reinforced titanium-based composites.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: prepare 0.5% (Nd 2 o 3 +TiB+TiC) / Ti composite (Nd 2 o 3 :TiB:TiC=2:6:1).

[0018] Weigh 99.753% of titanium sponge, 0.153% of neodymium, 0.037% of boron oxide and 0.057% of boron carbide powder according to the proportion, mix them evenly, put them into the non-consumable electric arc furnace, and evacuate the non-consumable electric arc furnace , the vacuum degree is 1×10 -3 Pa, and then smelted in a vacuum non-consumable electric arc furnace. The sample was smelted three times, and finally cooled with the furnace. After solidification, TiB whiskers, TiC particles, and nano-scale neodymium oxide ternary reinforcement reinforced titanium matrix composites were obtained. In this embodiment, a ternary reinforced titanium-based composite material with micron-sized TiB whiskers, TiC particles and nano-neodymium oxide can be prepared.

Embodiment 2

[0019] Embodiment 2: prepare 10% (Y 2 o 3 +TiB+TiC) / Ti-10V-2Fe-3Al composite material (Y 2 o 3 :TiB:TiC=3:7:1).

[0020] According to the ratio, weigh 83.778% of titanium sponge, 2.516% of yttrium, 0.989% of boron oxide, 0.990% of boron carbide powder, 10.023% of aluminum vanadium master alloy containing 78% V, 0.141% of aluminum wire, and 1.563% of iron powder, and mix them evenly Finally, use a press to press into a rod-shaped electrode, put the electrode group into a vacuum consumable electric arc furnace after welding, and evacuate the vacuum consumable electric arc furnace. The working vacuum degree is 0.4Pa, and then use the vacuum consumable electric arc furnace Melting, the sample is smelted twice, and finally cooled with the furnace to prepare TiB, TiC and rare earth yttrium oxide reinforced titanium matrix composites. The cast ingot is forged and rolled into a plate. In this embodiment, a multi-element reinforced titanium-based composite material plate with a la...

Embodiment 3

[0021] Embodiment 3: prepare 10% (Nd 2 o 3 +TiB+TiC) / Ti-6Al-2Sn-4Zr-2Mo-0.08Si composite material (Nd 2 o 3 :TiB:TiC=2:6:1).

[0022] Weigh 83.379% of titanium sponge, 3.009% of neodymium, 0.731% of boron oxide, 1.131% of boron carbide powder, 3.101% of aluminum-molybdenum master alloy containing 50% of Mo, 3.101% of aluminum wire, 2.385% of titanium-tin master alloy containing 65% of tin , zirconium 3.101% and crystalline silicon 0.062%. After mixing them evenly, use a press to press them into rod-shaped electrodes. After the electrode assembly is welded, put it into a vacuum consumable electric arc furnace. The temperature is 0.05Pa, and then smelted in a vacuum consumable electric arc furnace. The sample is smelted three times, and finally cooled with the furnace to prepare TiB, TiC and rare earth yttrium oxide reinforced titanium matrix composites. The ingot can be made into bar through forging billet opening and two-phase zone forging. In this example, a multi-compon...

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Abstract

The present invention relates to material preparing technology. The in-situ synthesis process of polyelement reinforced titanium base composite material includes the steps of: weighing and mixing spongy titanium, boron carbide, RE or RE alloy, boron oxide and alloying elements; smelting in cold mould furnace and pressing into electrode, welding and setting inside vacuum arc furnace, vacuumizing to 0.001-1 Pa, applying voltage and regulating current for smelting in twice or more times, and solidification. The present invention can prepare polyelement reinforced titanium base composite material in different sizes and shapes simply in low cost.

Description

technical field [0001] The invention relates to a method for preparing a composite material used in the technical field of material preparation, in particular to an in-situ synthesis method for a multi-element reinforced titanium-based composite material. Background technique [0002] Titanium matrix composites are mainly divided into two categories, fiber reinforced titanium matrix composites and particle reinforced titanium matrix composites. Fiber-reinforced titanium-based composites have anisotropic properties, complex processes, and expensive prices, while particle-reinforced titanium-based composites have isotropic properties, excellent mechanical properties, easy processing, and relatively low cost, which has attracted widespread attention. At present, most particle-reinforced titanium-based composites use one or two kinds of reinforcements, and there is no titanium-based composite reinforced by multiple reinforcements. Due to the interaction of multi-component and m...

Claims

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Application Information

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IPC IPC(8): C04B35/46C04B35/622
Inventor 杨志峰吕维洁覃继宁徐栋张荻
Owner SHANGHAI JIAO TONG UNIV
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