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TiAl-base composite material enhanced by three-dimensional network Ti2AlC and manufacturing method thereof

A technology of three-dimensional network and composite materials, which is applied in the field of TiAl-based composite materials and its preparation, and can solve problems such as low strength, poor mechanical properties, and poor plasticity at room temperature

Inactive Publication Date: 2007-08-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of poor mechanical properties, poor room temperature plasticity and low strength of existing TiAl-based composite materials

Method used

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  • TiAl-base composite material enhanced by three-dimensional network Ti2AlC and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0005] Specific implementation mode 1: In this implementation mode, the three-dimensional network structure Ti 2 The AlC-reinforced TiAl-based composite material consists of 45-50 at.% Ti powder, 40-49 at.% Al powder and 1-15 at.% Nb, Cr, Mn, V, Ni, W, Ta, Mo , Zr, Si, B element powder or one or more of them and carbon nanotubes accounting for 0.05-20% of the total weight of Ti powder, Al powder and element powder, wherein Nb, Cr, Mn, V, Ni, W, When there are two or more kinds of Ta, Mo, Zr, Si or B element powders, the atomic ratio between the element powders is arbitrary.

specific Embodiment approach 2

[0006] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the three-dimensional network structure Ti 2 The AlC-reinforced TiAl-based composite material consists of 46-49 at.% Ti powder, 42-48 at.% Al powder and 3-12 at.% Nb, Cr, Mn, V, Ni, W, Ta, Mo , Zr, Si, B element powders and carbon nanotubes accounting for 5-15% of the total weight of Ti powder, Al powder and element powders, where Nb, Cr, Mn, V, Ni, W, When there are two or more kinds of Ta, Mo, Zr, Si or B element powders, the atomic ratio between the element powders is arbitrary.

specific Embodiment approach 3

[0007] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the three-dimensional network structure Ti 2 The AlC-reinforced TiAl-based composite material consists of 48at.% Ti powder, 46at.% Al powder and 6at.% Nb, Cr, Mn, V, Ni, W, Ta, Mo, Zr, Si, B One or several of the element powders and carbon nanotubes accounting for 10% of the total weight of Ti powder, Al powder and element powders, wherein Nb, Cr, Mn, V, Ni, W, Ta, Mo, Zr, Si or When there are two or more kinds of B element powders, the atomic ratio between the element powders is arbitrary.

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Abstract

The invention relates to the making of TiAl based composite material with reinforced three dimensional net structure Ti2AlC. It solves the poor indoor plasticization and low strength issue of existing material. The newly invented material is made in the following combination based on atomic percentage: Ti powder 45-50at.%, Al powder 40-49at.%, 1-15at.% of one or more of Nb,Cr,Mn,V, Ni,W,Ta,Mo,Zr,Si,B powders, and carbon nanometer tube with the total weight of Ti, Al and element powder 0.05-20%, with two or more of Nb,Cr,Mn,V,Ni,W, Ta,Mo,Zr,Si,B, with all the element powders in random atomic percentages. It is made through ball grinding, mixing powder after feeding carbon nanometer tube, plasma sintering to get the final product.

Description

technical field [0001] The invention relates to a TiAl-based composite material and a preparation method thereof. Background technique [0002] TiAl metal is widely used in the fields of aerospace, aviation and automobile manufacturing. However, due to the poor room temperature plasticity and poor thermal processing ability of TiAl metal, this material cannot be widely used in engineering. Scientists at home and abroad have done a lot of research on the structure, plasticity and deformation of TiAl metal compounds. Studies have shown that TiAl-based composites have high specific elastic modulus, high specific strength, high creep resistance and high strength, high stiffness self-generated reinforcement phase, room temperature plasticity and hot workability can also be enhanced; but the original TiAl-based composites have the problems of poor room temperature plasticity and low strength. Contents of the invention [0003] The invention aims to solve the problems of poor m...

Claims

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Application Information

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IPC IPC(8): B22F3/10
Inventor 孔凡涛陈玉勇杨非
Owner HARBIN INST OF TECH
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