High plasticity magnesium alloy containing rare-earth yttrium

A magnesium alloy, high plasticity technology, applied in the field of magnesium alloys where yttrium rare earth element is added to improve the extrusion plasticity of the alloy, can solve the problems of inability to use industrial applications, limited application scope, slow strain rate, etc. Performance, effect of grain refinement

Inactive Publication Date: 2007-01-31
CHONGQING UNIV
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Problems solved by technology

Since the superplasticity of magnesium alloys is generally achieved at very slow strain rates, they cannot be used in industrial applications.
Traditional high-strength magnesium alloys generally refer to Mg-Zn-Zr alloys. The typic

Method used

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  • High plasticity magnesium alloy containing rare-earth yttrium
  • High plasticity magnesium alloy containing rare-earth yttrium
  • High plasticity magnesium alloy containing rare-earth yttrium

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[0021] Examples:

[0022] Alloy number

[0023] According to the above formula, the magnesium alloy of the present invention is obtained by smelting in the following method:

[0024] 1. Melting: carried out on semi-continuous casting equipment. The composition of the master batch is Mg: 95.3%, Zn: 4.0%, Zr: 0.30%, Y: 0.40%. After covering with flux, start heating, and all the master batches are melted at 700 ℃, and then press A, B, C for rare earth-containing The proportion of magnesium alloy material is added with alloying element Zn ingot. Zr and Y are added in the form of Mg-Zr and Mg-Y master alloys. The mass percentages of Zr and Y are 25.58 and 23.42, respectively. Mg and Zr are adjusted according to the requirements of A, B, and C containing rare earth magnesium alloy materials. , Y content. After adding the materials, stir and continue to heat to 750°C, stand for 30 minutes to keep warm, and then lower the temperature to 690-720°C and cast to obtain ingots of A, ...

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Abstract

The magnesium alloy contains Zn 5.0-8.5 wt%, Zr 0.6-0.8 wt% and Y 0.7-2.0 wt% except Mg and inevitable impurity. The present invention has high strength like traditional magnesium alloy and greatly raised plasticity. It may be used in industrial production to produce sheet, rod, pipe, section and forged products via plastic metal forming, and may have structure and performance controlled via heat treatment.

Description

technical field [0001] The invention relates to a metal material, in particular to a magnesium alloy added with yttrium rare earth element to improve extrusion plasticity of the alloy. Background technique [0002] my country is rich in magnesium ore resources. Therefore, the research and development of magnesium alloy materials with excellent performance and various specifications plays an important role in the national economy. Magnesium alloy is a new type of light metal material. It is currently the lightest metal structure material in industrial applications. It has high specific strength, specific stiffness, good shock absorption, noise reduction and cutting performance. It is used in aerospace, transportation and 3C products and other fields have broad application prospects. At present, the demand for magnesium and magnesium alloys is growing at a rate of more than 20% per year, and has gradually developed into the third largest metal material after steel and aluminu...

Claims

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Application Information

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IPC IPC(8): C22C23/04C22C23/06
Inventor 丁培道张丁非潘复生彭建董国振
Owner CHONGQING UNIV
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