Preparation method for in-situ aluminium base composite material inoculant

An aluminum-based composite material and an inoculant technology, applied in the field of aluminum-based alloys, can solve the problems of low production efficiency, high production cost, dispersion and distribution, etc., and achieve the effects of high production efficiency, low production cost, and enhancement effect.
CN102864343BActive Publication Date: 2013-12-25HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2013-12-25

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Abstract

The invention discloses a preparation method for an in-situ aluminium base composite material inoculant, and relates to an aluminium base alloy, in particular to a method for preparing a thin-strip AlN-TiN / Al nanometer in-situ aluminium base composite material inoculant by the plasma metallurgy nitridation and rapid solidification technology. The preparation method comprises the following steps of: weighing domestic Al-5Ti-1B alloy and metal pure Ti of the required amount at the following set ingredient ratio: 10.0-10.5% of Ti, 0.9-1.2% of B and the balance of Al; putting all raw materials into a nonconsumable vacuum arc furnace to be smelted to obtain a smelted blocky Al-10Ti-1B alloy; then, obtaining blocky Al-10Ti-1B alloy composite material by plasma nitriding treatment; and finally, carrying out rapid solidification treatment to obtain the thin-strip AlN-TiN / Al nanometer in-situ aluminium base composite material inoculant. The inoculant is provided with nucleation particles with smaller size and more dispersed distribution, and the particle enhancement effect is improved. The method has the advantages of high production efficiency and low cost.
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Description

technical field

[0001] The technical scheme of the present invention relates to an aluminum-based alloy, in particular to a preparation method of an in-situ aluminum-based composite material inoculant. Background technique

[0002] In the industrial production of aluminum and its alloys, the method of adding an inoculant (also known as a refiner or inoculant refiner) to the melt is used to improve the overall performance of the product, due to its simplicity, practicality and ease of operation. , so it has broad application prospects. So far, Al-5Ti-1B master alloy is recognized as the most effective inoculant, and Al-5Ti-B inoculant is used to inoculate aluminum and its alloy crystals. Grain refinement of aluminum and its alloys by heterogeneous nucleation and alloying. International Materials Reviews, 2002, 47(1):3-29.). The Al-5Ti-B inoculant can increase the casting speed, reduce cracks, eliminate cold insulation and feathery crystals, and bring greater flexibility to ...

Claims

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