Preparation method of Al3Sc-Al3Zr/Al composite material inoculant

A technology of al-sc-zr and composite materials, which is applied in the field of aluminum-based alloys, can solve the problems of high product cost, nucleation particle dispersion or dispersion degree, large particle size, and excessive particle size, so as to save production cost, Reduce the dosage and enhance the effect of aluminum alloy
CN110004332AActive Publication Date: 2019-07-12HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2019-07-12

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Abstract

The invention discloses a preparation method of an Al3Sc-Al3Zr / Al composite material inoculant, and relates to aluminum-based alloy. The method comprises the steps that raw material preparation is conducted according to the mass percentage of each element in target alloy of 1.00%-2.00% of Sc, 1.00%-2.00% of Zr and the balanced Al; in-situ synthesis preparation and ultrasound treatment of block Al-Sc-Zr intermediate alloy are conducted; a strip-shaped Al3Sc-Al3Zr composite material inoculant product is prepared through a rapid solidifying technology. The method has the advantages that part of Sc with high price is replaced by adding low-cost Zr to reduce the cost of the product, and the defects of the failure of the dispersion distribution of core forming particles on a substrate, non-idealdispersion level, aggregation sedimentation in a melt of particles, large particular size, excessively large Al3Sc particles in Al-Sc alloy and excessively low number in the prior art are overcome.
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Description

technical field

[0001] The technical solution of the present invention relates to aluminum-based alloys, specifically Al 3 Sc-Al 3 A preparation method of an inoculant for Zr / Al composite material. Background technique

[0002] As a typical Al-Sc intermetallic compound, Al 3 There is a very small lattice mismatch δ value between Sc and α-Al, which is by far the most effective nucleation substrate for α-Al nucleation. Therefore, Sc-containing aluminum alloys usually have very fine grains. In addition, the supersaturated Al-Sc solid solution is easily decomposed into stable Al 3 The Sc precipitated phase plays an important role in dispersion strengthening. Therefore, in recent years, Sc, as a microalloying additive element for different aluminum alloys, has received more and more attention due to its remarkable grain-fine strengthening effect. But it is worth noting that in the process of microalloying, in order to achieve the best effect of refinement enhancement, the am...

Claims

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