A kind of yttrium cerium magnesium alloy and preparation method thereof
A magnesium alloy and mixed gas technology, which is applied in the field of yttrium cerium magnesium alloy and its preparation, can solve the problems of insufficient performance, difficulty in meeting the requirements of large deformation rolling forming of magnesium alloy plates, and increase of alloy cost, etc., to achieve reasonable and excellent composition. The effect of comprehensive mechanical properties and simple preparation process
Active Publication Date: 2018-02-13
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology
However, the commonly used AZ and AM alloys cannot ensure that their strength and plasticity are improved at the same time, and it is difficult to meet the large deformation rolling forming requirements of magnesium alloy sheets.
In recent years, the rare earth AE series magnesium alloy has developed rapidly, which has solved many problems of insufficient performance, but the total amount of rare earth elements in the alloy exceeds 8%, and some even reach more than 20%, which increases the cost of the alloy
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Embodiment
[0041] This embodiment provides a magnesium alloy containing yttrium and cerium, which is produced by melting and casting pure Mg and master alloys Mg-30%Y, Mg-30%Ce, Mg-30%Ca, and Mg-30%Zr.
[0042] First grade pure magnesium ingot: purity≧99.98%;
[0043] The master alloy is Mg-30%Y, Mg-30%Ce, Mg-30%Ca, Mg-30%Zr, impurity content≦0.1wt%.
[0044] The composition (percentage by weight) of the magnesium alloy containing yttrium and cerium in the present embodiment is: rare earth element Y: 3%, rare earth element Ce: 1.5%, Ca: 0.9%, Zr: 0.6%, the rest is Mg, composition The sum of the percentages is 100%.
[0045] The smelting process of the yttrium-cerium-containing magnesium alloy is as follows: formulate the yttrium-cerium-containing magnesium alloy according to the above-mentioned components, preheat the yttrium-cerium-containing magnesium alloy before melting, and mix the first-grade pure magnesium ingot, the intermediate alloy Mg-30%Y , Mg-30%Ce, Mg-30%Ca, and Mg-30%Zr ...
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Abstract
The invention discloses a novel yttrium-cerium-magnesium alloy and a preparation method thereof. The prepared alloy is composed of the following components by weight percentage: rare earth element Y: 2.5% to 3.5%, rare earth element Ce: 0.7% to 2.0% , Ca: 0.5%-1.0%, Zr: 0.3%-0.8%, the balance is magnesium and trace impurities, and the sum of the percentages of the components is 100%. Its preparation method is smelting under gas protection and undergoing a certain heat treatment process. It has excellent mechanical properties such as room temperature tensile strength, yield strength and elongation, and has more economical costs, and can be mass-produced and applied.
Description
technical field [0001] The invention relates to a magnesium alloy and a preparation method thereof, in particular to a yttrium-cerium-magnesium alloy and a preparation method thereof. Background technique [0002] As the lightest engineering structural material, magnesium alloy has the advantages of small specific gravity, high specific strength and specific stiffness, good vibration damping and easy recycling. It can reduce the weight and save energy when used in motor vehicle shells. It is known as the green of the 21st century. Engineering metal structural materials. However, magnesium alloy is easy to oxidize, and there are only three basal plane slip systems under normal temperature conditions, it is difficult to undergo plastic deformation, and it is extremely easy to burn under high temperature conditions. At present, most of the forming methods of magnesium alloys are casting, which greatly limits the wider application of magnesium alloys in industry. Therefore, th...
Claims
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IPC IPC(8): C22C23/06C22C1/03
CPCC22C1/03C22C23/06
Inventor 王文礼雷宁宁
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY