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Preparation method of TiC granule reinforcing Ti-Al-Sn-Zr-Mo-Si high-temperature titanium alloy composite material plate

A high-temperature titanium alloy and particle reinforcement technology is applied in the field of preparation of titanium alloy composite material sheets, which can solve the problems of high oxygen content and poor plasticity of TiC particle reinforced titanium matrix composite materials, and achieve low oxygen content, improved mechanical properties, and elimination of The effect of shrinkage

Inactive Publication Date: 2010-10-06
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of high oxygen content and poor plasticity of the TiC particle-reinforced titanium-based composite material in the existing non-consumable electrode smelting preparation method, and provides TiC particle-reinforced Ti-Al-Sn-Zr-Mo-Si high-temperature Preparation method of titanium alloy composite material plate

Method used

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specific Embodiment approach 1

[0014]Embodiment 1: The preparation method of the TiC particle reinforced Ti-Al-Sn-Zr-Mo-Si high-temperature titanium alloy composite material plate of the present embodiment is carried out according to the following steps: 1. Reinforce Ti-Al-Sn- The volume percentage of TiC particles in the Zr-Mo-Si high-temperature titanium alloy composite material is 1%~25%, and the volume percentage of Ti-Al-Sn-Zr-Mo-Si high-temperature titanium alloy is 75%~99%. Take titanium powder, graphite powder, titanium sponge, industrial pure aluminum, pure tin, zirconium sponge, pure molybdenum and crystalline silicon, wherein the molar ratio of titanium powder and graphite powder is 2-6:1; Add the titanium powder and graphite powder into the mixer and mix evenly, and then use a cold isostatic press to press the uniformly mixed powder under the condition of 200MPa-300MPa for 3min-10min to obtain a prefabricated block; 3. The sponge titanium, industrial pure aluminum, pure tin, sponge zirconium, pu...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that: the fineness of the titanium powder described in step 1 is 300 mesh to 350 mesh, and the fineness of the graphite powder is 2 μm to 5 μm. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the fineness of the titanium powder described in step 1 is 325 mesh, and the fineness of graphite powder is 3.5 μm. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method of a TiC granule reinforcing Ti-Al-Sn-Zr-Mo-Si high-temperature titanium alloy composite material plate, relating to a preparation method of a titanium alloy composite material plate and solving the problems of high oxygen content and poor plasticity of TiC granule reinforcing titanium-base composite materials prepared by the traditional nonconsumable electrode melting preparation method. The preparation method comprises the following steps of: calculating the amounts of titanium powder, graphite powder and other materials according to the volume percent of TiC granules and Ti-Al-Sn-Zr-Mo-Si high-temperature titanium alloys which are contained in the composite material plate; then preparing the titanium powder and the graphite powder into prefabricated blocks; then placing the prefabricated blocks and the other materials into a vacuum water-cooling copper crucible induction melting furnace for melting so as to obtain cast ingots; and then carrying out forging, rolling and heat treatment on the cast ingots to obtain the composite material plate with the oxygen content of 200 ppm-800 ppm and 2-10 percent of elongation percentage.

Description

technical field [0001] The invention relates to a preparation method of a titanium alloy composite material plate. Background technique [0002] Discontinuously reinforced titanium matrix composites have higher specific strength and specific modulus than titanium alloys, excellent fatigue and creep properties, and excellent high temperature performance and corrosion resistance. They are ideal structural materials for the aerospace industry. The titanium-based composite material synthesized in situ by using TiC particles greatly improves the high-temperature mechanical properties of the composite material, and the TiC particles have good compatibility and high stability with the titanium matrix. TiC particle-reinforced titanium-based composite materials prepared by non-consumable electrode smelting process. In this method, the raw materials are smelted many times, and the oxygen content is 700-1000ppm. High oxygen content will easily cause the mechanical properties of the com...

Claims

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Application Information

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IPC IPC(8): B23P17/00C22C1/02C22F1/18C22C14/00
Inventor 陈玉勇刘志光张长江孔凡涛肖树龙赵而团
Owner HARBIN INST OF TECH
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