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A kind of preparation method of tib whisker reinforced titanium matrix composite material

A technology of titanium-based composite materials and composite material blocks, which is applied in the field of preparation of TiB whisker-reinforced titanium-based composite materials, can solve the problems of coarse whisker growth, unobtainable, and affecting the structural integrity of TiB phase, and achieve the elimination of heat stress, improve density, and promote the normal growth of whiskers

Active Publication Date: 2022-07-22
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing thermal processing and heat treatment methods optimize and adjust the matrix structure of TiB whisker-reinforced titanium matrix composites, the structural integrity of the TiB phase will be affected, resulting in the abnormal coarsening and growth of whiskers, so it is impossible to obtain a high-performance matrix and Whisker-reinforced highly efficient and synergistically strengthened TiB whisker-reinforced titanium matrix composites

Method used

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  • A kind of preparation method of tib whisker reinforced titanium matrix composite material
  • A kind of preparation method of tib whisker reinforced titanium matrix composite material
  • A kind of preparation method of tib whisker reinforced titanium matrix composite material

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preparation example Construction

[0049] like figure 1 As shown, an embodiment of the present invention provides a method for preparing a TiB whisker reinforced titanium-based composite material, the method comprising the following steps:

[0050] Step (1), the TiB 2 The powder and titanium powder or titanium alloy powder are added into the ball milling tank, and the mixed powder is obtained after ball milling treatment and drying;

[0051] Step (2), using a discharge plasma system to sinter the mixed powder to obtain a composite material block;

[0052] Step (3), performing a bidirectional vertical alternate hot rolling process on the composite material block to obtain a bidirectional vertical alternate hot rolling block;

[0053] In step (4), the bidirectional vertical hot-rolled block is vacuum-packaged in a quartz tube, and then placed in a heat treatment furnace for heat treatment to obtain the TiB whisker-reinforced titanium-based composite material.

[0054] By combining ball milling, spark plasma si...

Embodiment 1

[0121] (1) Put 0.09gTiB 2 The powder and 19.91g TC4 powder were added to the ball milling tank of the SM-QB planetary ball mill, and the grinding balls and anhydrous ethanol were added according to the ball-to-material ratio of 4:1, and the ball-milling treatment was carried out at 300r / min for 1h to obtain a uniformly mixed slurry. , pour the mixed mud into a vacuum rotary evaporator, and rotate it at 80 r / min and 70 ° C for 0.5 h. After the acetone is evaporated, it is then dried in an electric heating constant temperature ancient wind drying box at 40 ° C for 1.5 h to obtain a mixed slurry. powder;

[0122] Among them, the grinding ball is composed of large agate balls and small agate balls with a mass ratio of 2:1, the ratio of the diameters of the large agate balls and the small agate balls is 3:1, and the diameter of the small agate balls is 5mm;

[0123] (2) put the 20g mixed powder obtained in step (1) into a cylindrical graphite mold with an inner diameter of 25mm, w...

Embodiment 2

[0135] (1) Put 0.02gTiB 2 The powder and 19.98g TC4 powder were added to the ball milling tank of the SM-QB planetary ball mill, and the grinding ball and absolute ethanol were added according to the ball-to-material ratio of 1:1, and the ball-milling treatment was carried out at 550r / min for 0.5h to obtain a well-mixed mixture. The mixed mud was poured into a vacuum rotary evaporator, and rotary steamed at 120r / min and 80°C for 0.2h. After the acetone was evaporated, it was dried in an electric heating constant temperature ancient wind drying box at 30°C for 2 hours to obtain a mixed solution. powder;

[0136] Among them, the grinding ball is composed of large agate balls and small agate balls with a mass ratio of 0.1:1, the ratio of the diameters of the large agate balls and the small agate balls is 8:1, and the diameter of the small agate balls is 1mm;

[0137] (2) put the 20g mixed powder obtained in step (1) into a cylindrical graphite mold with an inner diameter of 25mm...

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Abstract

The invention provides a preparation method of TiB whisker reinforced titanium-based composite material, wherein the method comprises: mixing TiB 2 The powder and titanium powder or titanium alloy powder are added into a ball mill tank, and after ball milling treatment, the mixed powder is obtained by drying; the mixed powder is sintered by a discharge plasma system to obtain a composite material block; the composite material block is subjected to sintering treatment. Two-way vertical alternate hot rolling treatment to obtain a two-way vertical alternate hot-rolled block; the two-way vertical hot-rolled block is vacuum-sealed in a quartz tube, and then placed in a heat treatment furnace for heat treatment to obtain the TiB whisker reinforced titanium base composite material. Under the premise of not affecting the structural integrity of the TiB phase and avoiding the abnormal coarsening and growth of whiskers, this scheme optimizes and adjusts the matrix phase structure through bidirectional vertical alternate hot rolling and heat treatment, and obtains a high-performance matrix and whisker reinforced phase. Efficient synergistic strengthening of TiB-reinforced titanium matrix composites.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of metal matrix composite materials, in particular to a preparation method of a TiB whisker reinforced titanium matrix composite material. Background technique [0002] Titanium matrix composites (TMCs) are made of pure titanium or titanium alloys as the matrix and ceramic reinforcing phases (particles, whiskers, continuous fibers) as the reinforcement. Due to the high specific strength, specific stiffness, good wear resistance, high temperature resistance, low thermal expansion coefficient, non-magnetic and non-aging properties of titanium-based composite materials, it has been widely used in aerospace, automobile industry, biomedicine, etc. field. [0003] TiB whisker is one of the commonly used whisker reinforcements for titanium matrix composites, and can meet the following conditions at the same time: (1) excellent physical and mechanical properties such as strength, stiffness...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/14C22C49/11C22F1/18C22C101/22
CPCC22C47/14C22C49/11C22F1/183C22F1/002
Inventor 胡正阳彭海春宋鹏陈明丁宇升梁岳莹
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH