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A (tib 2 /al-cu)/al-cu based aluminum matrix composite material and preparation method

An aluminum-based composite material and composite material technology, applied in the field of aluminum-based composite material preparation, can solve the problems of limited effect, low elongation rate and large difference of particle-reinforced aluminum-based composite materials, and achieve convenient operation, high strength, and good plastic effect

Active Publication Date: 2022-03-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But TiB 2 Particle agglomeration is serious, the prior art TiB 2 The preparation process of Al-Cu composite materials is usually solid solution treatment after the conventional preparation method, which can improve the TiB 2 Particle agglomeration, but the effect is extremely limited, resulting in TiB prepared by in situ authigenic method 2 The elongation of particle reinforced aluminum matrix composites is low and the difference is large, which restricts its application

Method used

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  • A (tib <sub>2</sub> /al-cu)/al-cu based aluminum matrix composite material and preparation method
  • A (tib <sub>2</sub> /al-cu)/al-cu based aluminum matrix composite material and preparation method
  • A (tib <sub>2</sub> /al-cu)/al-cu based aluminum matrix composite material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Machining a Φ10mm×50mm hole along the center of the circumference of the homogenized Φ98mm Al-Cu alloy substrate, using TiB 2 / Al-Cu composite material was prepared into a Φ10 mm×50mm mandrel, and the TiB 2 / Al-Cu composite mandrel embedded in the machined hole of the Al-Cu alloy matrix, TiB 2 / Al-Cu composite mandrel volume fraction is (TiB 2 / Al-Cu) / 1% of Al-Cu based aluminum matrix composites. Passed (TiB 2 / Al-Cu) / Al-Cu based aluminum matrix composites were hot-extruded at 480 °C with an extrusion ratio of 20:1 to prepare (TiB 2 / Al-Cu) / Al-Cu based aluminum matrix composite profiles. Then it was subjected to solution heat treatment at 540°C / 2h and water quenching at room temperature, 3% cold deformation and aging heat treatment at 155°C / 23h.

Embodiment 2

[0040] 13 holes of Φ10mm×50mm are uniformly distributed along the circumference of the homogenized Φ98mm Al-Cu alloy matrix. Using TiB 2 / Al-Cu composite material is prepared into a Φ10 mm×50mm mandrel, and the TiB 2 / Al-Cu composite mandrel embedded in a machined hole in the Al-Cu alloy matrix, TiB 2 / Al-Cu composite mandrel volume fraction is (TiB 2 / Al-Cu) / 12.3% of Al-Cu based aluminum matrix composites. Passed (TiB 2 / Al-Cu) / Al-Cu based aluminum matrix composites were hot-extruded at 480°C with an extrusion ratio of 20:1 to prepare (TiB 2 / Al-Cu) / Al-Cu series aluminum matrix composite material profiles. Then it was subjected to solution heat treatment at 540°C / 2h and water quenching at room temperature, 3% cold deformation and aging heat treatment at 155°C / 23h.

Embodiment 3

[0042] 25 holes of Φ10mm×50mm are uniformly distributed along the circumference of the homogenized Φ98mm Al-Cu alloy matrix. Using TiB 2 / Al-Cu composite material was prepared into a Φ10 mm×50mm mandrel, and the TiB 2 / Al-Cu composite mandrel embedded in the machined hole of the Al-Cu alloy matrix. TiB 2 / Al-Cu composite mandrel volume fraction is (TiB 2 / Al-Cu) / 23.7% of Al-Cu based aluminum matrix composites. Passed (TiB 2 / Al-Cu) / Al-Cu based aluminum matrix composites were hot extruded at 480°C (extrusion ratio 20:1), and (TiB 2 / Al-Cu) / Al-Cu aluminum matrix composite profiles. Then it was subjected to solution heat treatment at 540°C / 2h and water quenching at room temperature, 3% cold deformation and aging heat treatment at 155°C / 23h.

[0043] Table 1 Mechanical properties of (TiB2 / Al-Cu) / Al-Cu aluminum matrix composites

[0044] example Heat treatment σ b / MPa

[0045] The results in Table 1 show that compared with conventional Al-Cu alloys, the pre...

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Abstract

A (TiB 2 / Al-Cu) / Al-Cu-based aluminum-based composite material and preparation method, the composite material is TiB 2 / Al-Cu composite material is embedded in the Al-Cu alloy matrix and obtained by co-extrusion; the TiB 2 / Al‑Cu composite material is the TiB prepared by in-situ autogenous method 2 / Al-Cu based composite material cast slabs are obtained by sequential homogenization treatment and variable temperature and strong deformation. The preparation method is to TiB 2 / Al-Cu composite material embedded in Al-Cu aluminum alloy matrix, after co-extrusion, solution treatment, room temperature deformation, and artificial aging treatment were sequentially performed to obtain (TiB 2 / Al-Cu) / Al-Cu based aluminum matrix composites. Compared with the conventional Al-Cu alloy, the (TiB 2 / Al‑Cu) / Al‑Cu based aluminum matrix composite material with good interfacial bonding, TiB 2 The uniform distribution of particles achieves high strength and good plasticity at the same time. The process method of the invention is simple, easy to operate and suitable for industrial application.

Description

technical field [0001] The invention relates to the field of preparation of aluminum-based composite materials, in particular to a (TiB 2 / Al-Cu) / Al-Cu based aluminum matrix composite material and preparation method thereof. Background technique [0002] Granular aluminum alloy composites have the characteristics of high strength and high modulus of elasticity, and have broad application prospects in aerospace, automotive, electronics, advanced weapon systems and other fields, and are a new generation of structural materials with broad application prospects. in situ enhanced TiB 2 / Al-Cu composite materials have the characteristics of high strength, elastic modulus, and good thermal stability. They are a new generation of structural materials that are urgently needed to be developed for aerospace and other high-end equipment. The particle-reinforced aluminum matrix composites prepared by the in-situ self-generation method show the following advantages: (1) The in-situ self...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/14C22C21/16C22C32/00C22F1/057
CPCC22C21/14C22C21/16C22C32/0073C22F1/057
Inventor 陈送义陈炤煊陈康华
Owner CENT SOUTH UNIV