Preparation of magnesium alloy with high strength and ductility

A magnesium alloy, high-strength technology, applied in the field of spray deposition preparation technology, can solve the problems of high equipment requirements, high production costs, and difficult control of the preparation process

Inactive Publication Date: 2008-10-08
UNIV OF SCI & TECH BEIJING
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A careful analysis of the invention patent shows that, in addition to the high production cost, the prepa

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation of magnesium alloy with high strength and ductility
  • Preparation of magnesium alloy with high strength and ductility
  • Preparation of magnesium alloy with high strength and ductility

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example 1:

[0014] AZ31 magnesium alloy adopts the following preparation process:

[0015] (1) Preparation of magnesium alloy deposit billets by spray forming

[0016] First, place the AZ31 magnesium alloy ingot in the melting furnace, and the induction furnace draws vacuum. During this period, the furnace is purged with argon 3 times. When the vacuum reaches 10Pa, the vacuum furnace is filled with argon until the absolute value shown on the vacuum gauge scale is 0.03. When the smelting furnace is supplied with electricity to melt the ingot, after the alloy is melted and mixed evenly by electromagnetic stirring, it is allowed to stand and cool to 750°C, pour it into the tundish, and flow out through the guide nozzle. The high-pressure atomizing gas N 2 Atomization, the atomized droplets are deposited on the receiving plate to form a columnar deposition blank. The ring-hole type non-restrictive atomizing nozzle is adopted, and the specific process parameters are as follows:...

Example Embodiment

[0020] Example 2:

[0021] AZ91 magnesium alloy adopts the following preparation process:

[0022] (1) Preparation of magnesium alloy deposit billets by spray forming

[0023] First, place the AZ91 magnesium alloy ingot in the melting furnace, and the induction furnace draws a vacuum. During this period, the furnace is purged with argon 3 times. When the vacuum reaches 30 Pa, the vacuum furnace is filled with argon until the absolute value of the vacuum gauge is 0.03. When the smelting furnace is supplied with electricity to melt the ingot, after the alloy is melted and mixed evenly by electromagnetic stirring, it is allowed to stand to cool down to 720°C, pour it into the tundish, and flow out through the guide nozzle. The high-pressure atomizing gas N 2 Atomization, the atomized droplets are deposited on the receiving plate to form a columnar deposition blank. The ring-hole type non-restrictive atomization nozzle is adopted. The specific process parameters are as follows: atomiz...

Example Embodiment

[0027] Example 3:

[0028] The Mg-9.0wt.%Al-1.8wt.%Zn alloy adopts the following preparation process:

[0029] (1) Preparation of magnesium alloy deposit billets by spray forming

[0030] First, place the AZ91 magnesium alloy ingot in the melting furnace, and the induction furnace draws vacuum. During this period, the furnace is washed twice with argon. When the vacuum reaches 50Pa, the vacuum furnace is filled with argon until the absolute value of the vacuum gauge shows 0.04. When the ingot is melted, power is sent to the smelting furnace. After the alloy is melted, other alloy ingredients (pure zinc blocks) are added to the smelting furnace through the feeding device equipped with the vacuum furnace, and after the electromagnetic stirring is uniformly mixed, the temperature is allowed to stand and cool to 700°C. Pour into the tundish and flow out through the guide nozzle, high-pressure atomizing gas N 2 Atomization, the atomized droplets are deposited on the receiving plate to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A preparation method of a high-strength magnesium alloy relates to a spray deposition preparation process and proposes the spray forming technology which adopts protective atmosphere, thus solving the problems of volatilization, oxidation and safety etc. of the magnesium alloy, preparing a magnesium alloy deposition blank with complete shape, low segregation, high density and qualified components and ensuring the macro-mechanical properties of Mg-Al-Zn alloy and the plastic deformation capacity to be synchronously improved. The method is that firstly, an alloy ingot is arranged in a melting furnace, the vacuum extraction is carried out, the furnace is washed by argon for 2 to 3 times, when the vacuum degree is 10 to 70 Pa, the argon is filled till the pressure is slightly lower than the outside atmospheric pressure, the ingot is melted, electromagnetically stirred and evenly mixed, after that, the ingot is poured to a middle package when the temperature of the melt is 700 to 770 DEG C and is flown out by a flow guide nozzle, an annular hole type non-limited atomizing nozzle is adopted for high-pressure atomizing N2 gas, the atomization pressure is 0.5 to 0.6MPa, and atomized liquid is deposited on a receiving polar plate to form the columnar magnesium alloy deformation blank. The strength and the toughness of the magnesium alloy material prepared by the invention are both in better levels, thus realizing the synchronous improvement of the strength and the toughness.

Description

technical field [0001] The invention relates to a spray deposition preparation process, provides a new method for improving the structure of a magnesium alloy and improving its strength and toughness, and relates to the technical fields of metal materials, metallurgy and plastic processing. Background technique [0002] With the deepening of the application of magnesium alloys in the fields of aviation, aerospace, shipbuilding, transportation, military industry and high-tech industries, the requirements for the performance of magnesium alloys are getting higher and higher. How to improve the comprehensive performance of magnesium alloys to meet the use of structural materials Requirements become the focus and difficulty of current magnesium alloy research. Mg-Al-Zn alloys are the most widely used industrial alloy series in magnesium alloys. Under the traditional ingot metallurgy (IM) process conditions, due to unbalanced crystallization, brittle Mg 17 al 12 Intermetallic c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B22D23/00C22C23/00
Inventor 张济山李永兵崔华蔡元华段先进
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap