A layered multiscale TiB2 and TiB w Method for producing hybrid aluminum matrix composites

By employing techniques such as vacuum constant-temperature ball milling, graded temperature control, and multi-stage sintering, the problem of controlling the layer thickness and layer thickness ratio of layered aluminum matrix composites has been solved, resulting in the preparation of high-strength and high-toughness TiB2 and TiBw hybrid aluminum matrix composites, which can be applied to load-bearing structural components in fields such as aviation, aerospace, machinery, electronics, transportation, and nuclear power.

CN117867418BActive Publication Date: 2026-06-23HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Filing Date
2023-11-29
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing technologies make it difficult to precisely control the layer thickness and layer-to-thickness ratio of layered aluminum matrix composites, resulting in insufficient strength and toughness of the composites.

Method used

A layered multi-scale TiB2 and TiBw hybrid aluminum matrix composite material was prepared by using vacuum constant temperature ball milling and graded temperature control to regulate the cooling rate of the cold source, combined with multi-stage sintering and vacuum three-stage pressure infiltration. The solidification and sintering process of the slurry was controlled to generate TiBw whiskers to enhance the material properties.

Benefits of technology

Precise control of the layer thickness ratio of composite materials was achieved, which significantly improved the strength and fracture toughness of the materials, and produced high-strength and high-toughness layered multi-scale TiB2 and TiBw hybrid aluminum matrix composite materials.

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Abstract

The application discloses layered multi-scale TiB2 and TiB w The application discloses a preparation method of a hybrid aluminum matrix composite material. The method relates to the technical field of high-strength and high-toughness aluminum matrix composite material preparation. The method comprises the following steps: ball-milling Ti powder and TiB2 powder to uniformly mix the powders; adding deionized water, a dispersing agent and a binder into the mixed powders, uniformly mixing the powders, and preparing uniformly dispersed slurry; pouring the slurry into a mold, placing the mold on a cold source, and performing directional solidification; placing the solidified slurry in a vacuum drying machine, performing freeze drying, and preparing a ceramic green body preform; placing the ceramic green body preform in a furnace, performing sintering, and preparing a ceramic preform; placing the ceramic preform in a hot working mold, performing heating and heat preservation, pouring prepared aluminum melt into the hot working mold, performing pressure infiltration, and preparing an ingot; and performing solid solution and aging treatment on the ingot. The aluminum matrix composite material has high-strength and high-toughness mechanical performance characteristics, and can be used for manufacturing load-bearing structural parts in various fields.
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