Room-temperature high-plasticity magnesium alloy and preparation method thereof

A technology for magnesium alloy and casting magnesium alloy, which is applied in the field of Mg-Bi-Y-Mn high plasticity flame-retardant magnesium alloy and its preparation, can solve the problems of low room temperature plasticity of magnesium alloy, etc. Incorrect movement, the effect of promoting dynamic recrystallization

Active Publication Date: 2019-02-22
BEIJING ZHONGKE PUJIN SPECIAL MATERIAL TECHDEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to solve the main problem of low room temperature plasticity of existing magnesium alloys...

Method used

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  • Room-temperature high-plasticity magnesium alloy and preparation method thereof
  • Room-temperature high-plasticity magnesium alloy and preparation method thereof
  • Room-temperature high-plasticity magnesium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Design and select Mg-5Bi-2.8Y-0.06Mn (wt%) alloy composition ratio to form a magnesium alloy, and the preparation method includes the following steps:

[0047] 1) Ingredients: Use pure Mg ingot, pure Bi block, Mg-30Y master alloy and Mg-10Mn master alloy as raw materials, after surface pretreatment (such as removal of dirt, scale, etc., the same as the following examples), according to the above objectives ingredients for batching;

[0048] 2) Melting: Set the furnace temperature to 700-730°C. When the furnace temperature rises to the predetermined temperature, put the pure Mg ingot preheated to 200°C into the crucible of the melting furnace. Add the pure Bi block at 50°C and the Mg-Y master alloy preheated to 200°C into the molten magnesium; then increase the melting temperature to 750-760°C and keep it warm for 10 minutes, then stir for 5 minutes and let stand for 5 minutes , add Mg-10Mn master alloy, keep it warm for 10 minutes, then stir for 5 minutes, lower th...

Embodiment 2

[0056] (1) design and select Mg-6.0Bi-3Y-0.08Mn (wt%) alloy composition ratio to form a magnesium alloy, and the preparation method includes the following steps:

[0057] 1) Ingredients: Use pure Mg ingot, pure Bi block, Mg-30Y master alloy and Mg-10Mn master alloy as raw materials, after surface pretreatment (such as removal of dirt, scale, etc., the same as the following examples), according to the above objectives ingredients for batching;

[0058] 2) Melting: Set the furnace temperature to 700-730°C. When the furnace temperature rises to the predetermined temperature, put the pure Mg ingot preheated to 200°C into the crucible of the melting furnace. Add the pure Bi block at 50°C and the Mg-Y master alloy preheated to 200°C into the molten magnesium; then increase the melting temperature to 750-760°C and keep it warm for 10 minutes, then stir for 5 minutes and let stand for 5 minutes , add Mg-10Mn master alloy, keep it warm for 10 minutes, then stir for 5 minutes, lower th...

Embodiment 3

[0066] (1) The design selects the Mg-4.5Bi-2.3Y-0.05Mn (wt%) alloy composition ratio to form a magnesium alloy, and the preparation method comprises the following steps:

[0067] 1) Ingredients: Use pure Mg ingot, pure Bi block, Mg-30Y master alloy and Mg-10Mn master alloy as raw materials, after surface pretreatment (such as removal of dirt, scale, etc., the same as the following examples), according to the above objectives ingredients for batching;

[0068] 2) Melting: Set the furnace temperature to 700-730°C. When the furnace temperature rises to the predetermined temperature, put the pure Mg ingot preheated to 200°C into the crucible of the melting furnace. Add the pure Bi block at 50°C and the Mg-Y master alloy preheated to 200°C into the molten magnesium; then increase the melting temperature to 750-760°C and keep it warm for 10 minutes, then stir for 5 minutes and let stand for 5 minutes , add Mg-10Mn master alloy, keep it warm for 10 minutes, then stir for 5 minutes, ...

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Abstract

The invention discloses a magnesium alloy with excellent room-temperature plasticity, and a preparation method thereof, and belongs to the technical field of (metal materials) magnesium alloy. The magnesium alloy is prepared from the following components in percentage by weight: 2-7wt% of Bi, 1.5-4wt% of Y, 0.05-0.15wt% of Mn and the balance of Mg, wherein a Bi/Y ratio is 1.3-2, and Y is more thanor equal to 1.5%. The preparation method for the magnesium alloy mainly comprises the following preparation steps of: smelting, thermal treating and deformation processing. At the room temperature, the alloy has ductility which can be 41% or more, shows excellent room-temperature plasticity, and is a potential magnesium alloy material which can be used for further room-temperature plasticity processing or super-plasticity forming technology processing. Besides, in a casting process and a thermal treatment process, the alloy shows excellent flame resistance.

Description

technical field [0001] The invention relates to the field of metal materials and metal material processing, in particular to a Mg-Bi-Y-Mn high-plastic flame-retardant magnesium alloy and a preparation method thereof; the alloy has excellent plasticity at room temperature and can be used as a low-temperature large plastic deformation magnesium alloy. The blank of the alloy, as well as the potential heat-resistant magnesium alloy material, has broad application prospects and belongs to the technical field of magnesium alloys. Background technique [0002] Energy, materials and information are the three pillars of the development of human society. With the increasingly tight consumption of iron ore and other resources, as well as the increasingly severe situation of energy conservation and emission reduction, the development and utilization of resource-rich magnesium-based materials is an inevitable trend. In metal materials, the density of magnesium is about 1.74g / cm3, which i...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/03C22F1/06
CPCC22C1/03C22C23/00C22F1/002C22F1/06
Inventor 范海生杨明绪余晖孟帅举范少达
Owner BEIJING ZHONGKE PUJIN SPECIAL MATERIAL TECHDEV CO LTD
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