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An interface-enhanced bimetallic magnesium alloy composite material and its strengthening and toughening method
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A metal material and composite material technology, which is applied in the field of bimetallic magnesium alloy composite material and its strengthening and toughening, can solve the problems of rising cost and decreasing deformation ability, and achieves cost saving, good corrosion resistance, and simple and easy preparation method. Effect
Active Publication Date: 2019-11-08
UNIV OF SCI & TECH BEIJING
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[0002] Rare earth magnesium alloys have unique properties such as high specific strength, strong creep resistance, good corrosion resistance, and rich resources, and are widely used in structural materials. Due to the addition of these rare earth elements, their yield strength can reach 500 MPa, but their The cost will rise sharply, and the deformation ability will drop sharply
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Embodiment 1
[0024] Composite preparation method of ZK60 / WE43 magnesium alloy composite material with interface reinforced structure.
[0025] The coating material is rare earth magnesium alloy WE43. The composition and percentage are: 4.1% Y, 2.5% Nd, 0.5% Zr, 1.1% Gd, the balance is Mg and unavoidable impurities, among which impurity elements Si, Fe, Cu And the total amount of Ni is less than 0.15%. The total rare earth content is 8.2%.
[0026] The cladding material is Mg-Zn series magnesium alloy ZK60 (Mg-5Zn-Zr), its composition is 5.5% Zn, 0.6% Zr, 1.1% (Y, Gd), the balance is Mg and unavoidable impurities, of which The total amount of elements Si, Fe, Cu and Ni is less than 0.15%. The total rare earth content is 1.1%.
[0027] Preparation of ZK60 / WE43 Bimetallic MagnesiumAlloy Composite with Interface Enhanced Structure and Its Strengthening and Toughening Method
[0028] The first step: obtaining the bimetallic magnesium alloy composite material with the initial structure of t...
Embodiment 2
[0034] Composite casting preparation method of AZ80 / WE43 bimetallic magnesium alloy composite material with interface enhanced structure.
[0035] The coating material is rare earth magnesium alloy WE43. The composition and percentage are: 4.1% Y, 2.5% Nd, 0.5% Zr, 1.1% Gd, the balance is Mg and unavoidable impurities, among which impurity elements Si, Fe, Cu And the total amount of Ni is less than 0.15%. The total rare earth content is 8.2%.
[0036] The cladding material is Mg-Al series magnesium alloy AZ80 (Mg-8Al-Zn), its composition is 7.5% Al, 1.1% Zn, 0.6% Mn, the balance is Mg and unavoidable impurities, among which the impurity elements Si, Fe , Cu and Ni total less than 0.15%. The total rare earth content is 1.1%.
[0037] Preparation of AZ80 / WE43 MagnesiumAlloy Composite with Interface Reinforced Structure and Its Strengthening and Toughening Method
[0038] The first step: obtaining the bimetallic magnesium alloy composite material with the initial structure o...
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Abstract
The invention relates to an interface enhanced double metalmagnesiumalloycomposite material as well as a strengthening and toughening method thereof. The composite material comprises at least two layered components; the layers are combined through Mosaic metallurgy, an interface transition layer structure is transformed and strengthened after being treated by a heat treatment process, and the interface enhanced double metalmagnesiumalloycomposite material with interface mechanical property higher than that of a component material is obtained. According to the magnesiumalloy composite material, high-strength rare earthmagnesium alloy serves as an intermediate layer to bear force integrally, the conventional magnesium alloy with higher plasticity serves as a coating material to improve the whole shape of the composite material, the interface enhanced structure further improves the comprehensive mechanical property of the composite material, the strength disadvantage of the conventional magnesium alloy serving as a structure material can be overcome, the excellent mechanical propertyadvantage of the rare earth magnesium alloy is completely utilized, and the cost is greatly saved compared with that of the rare earth magnesium alloy while the requirements on light weight and high strength are met. The obtained interface enhanced double metal magnesium alloy composite material can be widely applied in the field of lightweight structure components.
Description
technical field [0001] The invention belongs to the field of alloy materials, and in particular relates to a bimetallic magnesium alloy composite material with an interface reinforced structure and a strengthening and toughening method thereof. Background technique [0002] Rare earth magnesium alloys have unique properties such as high specific strength, strong creep resistance, good corrosion resistance, and rich resources, and are widely used in structural materials. Due to the addition of these rare earth elements, their yield strength can reach 500 MPa, but their The cost will rise sharply, and the deformation ability will drop sharply. Ordinary wrought magnesium alloys have good plasticity, and the yield strength is mainly between 300 and 350 MPa. Practical applications show that they are also susceptible to temperature and corrosion. In order to reduce material costs, improve mechanical properties including strength, plasticity and impact properties, etc., and expand...
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