A core-shell tib 2 -fe 64 ni 36 Invarky Composite

A technology of tib2-fe64ni36 and composite materials, which is applied in the direction of additive manufacturing, etc., can solve the problems of poor wear resistance, low hardness, and difficulty in meeting the requirements of use, and achieve the effects of significant strengthening effect, improved hardness and wear resistance

Active Publication Date: 2022-03-15
EAST CHINA JIAOTONG UNIVERSITY
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  • Claims
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Problems solved by technology

However, Invar alloy has low hardness and poor wear resistance, and it is difficult to meet the requirements of structural components with high surface performance requirements such as high-speed train braking systems and railway turnouts. Therefore, research on the strengthening of Invar alloys has great applications. prospect

Method used

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  • A core-shell tib <sub>2</sub> -fe <sub>64</sub> ni <sub>36</sub> Invarky Composite
  • A core-shell tib <sub>2</sub> -fe <sub>64</sub> ni <sub>36</sub> Invarky Composite
  • A core-shell tib <sub>2</sub> -fe <sub>64</sub> ni <sub>36</sub> Invarky Composite

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Embodiment Construction

[0017] The present invention will be further illustrated below through specific implementation examples. However, these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0018] A core-shell TiB 2 -Fe 64 Ni 36 Invargi composites, the core-shell TiB 2 -Fe 64 Ni 36 Invar-based composites are made of TiB 2 The enhanced structure of the core-shell structure as the core and the Fe64Ni36 Invar alloy as the matrix; TiB 2 The reinforced structure of the core-shell structure as the core is evenly distributed in the matrix, and the reinforced phase with different structures can be formed by adjusting the added Ti / B atomic ratio.

[0019] The core-shell TiB 2 -Fe 64 Ni 36 The composition of the tile-based composite material is laser deposited from the mixed powder of elemental Fe, Ni, Ti and Fe-B alloy; the particle size of the mixed powder is 140-300 mesh, the shape is spherical, and the chemical compo...

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Abstract

The invention belongs to the field of composite materials and relates to a core-shell type TiB 2 ‑Fe 64 Ni 36 Invarky Composite. The core-shell TiB 2 ‑Fe 64 Ni 36 Invar-based composites are made of TiB 2 Reinforced structure of core-shell structure as the core and Fe as the matrix 64 Ni 36 Composed of Invar alloy; TiB 2 The reinforced structure of the core-shell structure is evenly distributed in the matrix, and the reinforced phase of different structures is formed by adjusting the added Ti / B atomic ratio; the core-shell TiB 2 ‑Fe 64 Ni 36 The composition of the tile-based composite material is laser deposited from the mixed powder of elemental Fe, Ni, Ti and Fe-B alloy; the particle size of the mixed powder is 140-300 mesh, the shape is spherical, and the chemical composition is: elemental Fe , Ni, and Ti are all 99.9% high-purity powders, and the B element content in the Fe-B alloy powder is 20wt.%. The invention provides a core-shell type TiB 2 ‑Fe 64 Ni 36 Invar-based composite material, the material composition is controllable, the performance is superior, and the Invar characteristics and wear resistance of the material can be taken into account at the same time. By changing the atomic ratio of Ti / B, the Fe 64 Ni 36 Composite coating prepared with TiB 2 Core-shell structure.

Description

technical field [0001] The invention belongs to the field of composite materials and relates to a core-shell type TiB 2 -Fe 64 Ni 36 Invarky Composite. Background technique [0002] During the laser deposition process, due to the rapid heating and rapid cooling characteristics of the deposition technology, there is a large residual internal stress inside the coating, which causes cracks in the laser deposition coating, and the Invar alloy has an extremely low thermal expansion coefficient. During deposition, the existence of residual stress can be effectively reduced, and the purpose of reducing or even eliminating cracks can be achieved. However, Invar alloy has low hardness and poor wear resistance, and it is difficult to meet the requirements of structural components with high surface performance requirements such as high-speed train braking systems and railway turnouts. Therefore, research on the strengthening of Invar alloys has great applications. prospect. Compar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/08C22C38/14C22C33/02B22F9/04B22F3/105B22F10/25
CPCC22C38/08C22C38/14C22C33/0257B22F9/04B22F3/105B22F2009/043
Inventor 赵明娟赵龙志邓楚祥焦海涛唐延川胡勇刘德佳蔺晓雪余梦
Owner EAST CHINA JIAOTONG UNIVERSITY
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