Micro-nano dual-scale particle reinforced titanium matrix composite material and preparation method thereof

By using solution quenching and aging heat treatment processes to reinforce titanium matrix composites with micro-nano dual-scale particles, the distribution and size of Ti5Si3 particles can be controlled, solving the problem of the inverted strength-toughness of traditional titanium matrix composites and improving the compressive strength and compressive plasticity of the material.

CN118109708BActive Publication Date: 2026-08-18SHENYANG UNIVERSITY OF TECHNOLOGY
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Patent Information

Application Number
CN202410433304.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-04-11
Publication Date
2026-08-18
Estimated Expiration
2044-04-11

AI Technical Summary

Technical Problem

Traditional single-phase homogenization composite materials for titanium matrix have problems such as localized stress concentration between the reinforcing phase and the titanium matrix, and deformation mismatch leading to a strength-toughness inversion, making it difficult to achieve comprehensive performance optimization of the material.

Method used

A method for preparing titanium-based composite materials reinforced with micro-nano dual-scale particles was adopted. Through solution quenching and aging heat treatment processes, the distribution and size of Ti5Si3 particles were controlled to form a β-transformation structure, which includes acicular martensite α' phase and metastable β phase, as well as fine α and β phases, thereby improving the mechanical properties of the material.

Benefits of technology

Without causing overheating, the size and distribution of Ti5Si3 particles were effectively controlled, which improved the compressive strength and compressive plasticity of titanium-based composite materials and achieved higher comprehensive mechanical properties.

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Abstract

The application discloses a kind of micro-nano dual-scale particle reinforced titanium matrix composite and preparation method thereof, micro-nano dual-scale particle reinforced titanium matrix composite ingot is obtained by smelting, first, after cutting, micro-nano dual-scale particle reinforced titanium matrix composite ingot is solid solution heat treated, solid solution temperature is 1150 DEG C, solid solution time is 30 min;Micro-nano dual-scale particle reinforced titanium matrix composite ingot in solid solution state is water quenched, after sample is cooled to room temperature;Finally, aging heat treatment is carried out at 800 DEG C for 5h, after aging, air cooling is cooled to room temperature, and finally, micro-nano dual-scale particle reinforced titanium matrix composite is obtained.Compared with prior art, by solid solution aging heat treatment in sequence to micro-nano dual-scale particle reinforced titanium matrix composite ingot, the purpose that the size and distribution of Ti5Si3 particle can be effectively controlled without overburning phenomenon of composite material can be achieved, and finally, the mechanical properties of titanium matrix composite are improved.
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