A high-throughput preparation method of magnesium alloy bulk materials based on powder jet smelting

A high-throughput technology for magnesium alloys, applied in the field of high-throughput experiments of materials, can solve the problems of long cycle time, long time consumption, burning loss and other problems of magnesium alloys, and achieve the effect of safety in the smelting process

Active Publication Date: 2020-07-14
NANCHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, magnesium and magnesium alloys also have disadvantages such as poor heat resistance, poor corrosion resistance, poor wear resistance and poor decoration, which limit their application fields.
Commonly used metallurgical methods to improve magnesium alloys have a long period and high cost
However, the existing high-throughput experimental technology is basically not suitable for the rapid preparation of magnesium alloy materials. For example, the material form obtained by composite material chip technology, micro-electromechanical structure method, and microfluidic structure method is not a bulk material; although multi-body material diffusion method can The bulk material is obtained, but the in-situ diffusion is not only time-consuming, but also the composition of the obtained alloy is difficult to be accurate. The high-energy energy beam in the additive manufacturing is easy to cause the explosion of the magnesium alloy, and the oxidation and burning of the magnesium are serious.

Method used

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  • A high-throughput preparation method of magnesium alloy bulk materials based on powder jet smelting
  • A high-throughput preparation method of magnesium alloy bulk materials based on powder jet smelting
  • A high-throughput preparation method of magnesium alloy bulk materials based on powder jet smelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Thirty Mg-(3.8~3.3)Zn-(0.3~0.7)Gd at% magnesium alloy samples with different compositions were smelted at the same melting temperature. First select the equipment. A multi-component real-time control precision powder feeding system (based on the patent 201610323445.2 self-installed powder feeding system), a five-temperature zone tubular atmosphere furnace (OTF-1200X-V, a furnace tube diameter of 50mm and a length of 1400mm, and a stable heating zone length of 180mm, A total of 5 heating zones), vacuum glove box and other commercial equipment, and customize the turntable crucible bracket and crucible size according to the commercial equipment. Among them, the size of the crucible is: the outer radius of the cylinder is 10mm, the inner radius is 5m, the height is 25mm, and the bottom thickness is 5mm; the semicircle diameter of the ears is 6mm, the length of the ears is 5mm, one ear is 0mm from the crucible mouth, and the other ear is 5mm from the crucible mouth , each c...

Embodiment 2

[0037] Mg-3.5Zn-0.6Gd at% magnesium alloy samples with the same composition were melted at five melting temperatures. The equipment selection conditions refer to Example 1, followed by high-throughput preparation of magnesium alloy bulk materials based on powder jet smelting. According to the instructions, the four steps of multi-component real-time precision output of alloy powder, continuous feeding of crucible, packaging of crucible, and partition melting of alloy powder in multi-temperature zones are carried out sequentially. The first three steps need to be carried out in a vacuum glove box. within.

[0038] 100-mesh Zn powder, Gd powder, and Mg powder are respectively loaded into the powder supply cylinder of the multi-component powder feeding system; the air inlet pressure of each powder supply hopper and the powder wheel, and the speed of the powder wheel are adjusted so that the total powder feeding rate is 20g / min, and the powder composition sent out is Mg-3.5Zn-0....

Embodiment 3

[0043] Thirty samples of Mg-(3.8~3.3)Zn-(0.3~0.7)Gd at% magnesium alloys with different compositions were melted at five melting temperatures. The equipment selection conditions refer to Example 1, followed by high-throughput preparation of magnesium alloy bulk materials based on powder jet smelting. According to the instructions, the four steps of multi-component real-time precision output of alloy powder, continuous feeding of crucible, packaging of crucible, and partition melting of alloy powder in multi-temperature zones are carried out sequentially. The first three steps need to be carried out in a vacuum glove box. within.

[0044] The configuration of 30 magnesium alloy samples with different compositions Mg-(3.8-3.3)Zn-(0.3-0.7)Gd at% was completed in the manner described in Example 1.

[0045] Loosen the fastening bolts on the crucible chain. The 6 magnesium alloy samples whose composition is Mg-(3.8~3.3)Zn-0.3Gd at% are the first group, cover the crucible cover, sc...

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Abstract

The invention discloses a high-throughput preparation method of a magnesium alloy block material based on powder jet smelting. The high-throughput preparation method comprises four steps of multi-component real-time precision output of a powdered alloy, continuous sample injection of a crucible, crucible packaging and partition smelting of the powdered alloy in a multi-temperature zone. The high-throughput preparation method can quickly prepare magnesium alloy block samples with a plurality of sets of distribution ratios and multi-heat treatment conditions. The type and content of alloying elements in the samples can be precisely controlled, and the sample configuration and melting processes are safe and simple. In addition to magnesium alloys, the high-throughput preparation method is further applicable to the high-throughput preparation of other easily oxidized alloy (such as zinc and titanium) blocks.

Description

technical field [0001] The invention belongs to the technical field of high-throughput experiments of materials, and in particular relates to the high-throughput preparation of metal blocks. Background technique [0002] "Materials high-throughput experiment" is to complete the preparation and characterization of a large number of samples in a short time. Its core idea is to change the sequential iterative method used in traditional materials research to parallel processing, and to cause qualitative changes in the efficiency of materials research with quantitative changes. As one of the three major elements of "Materials Genome Technology", it is organically integrated and developed with "Materials Computational Simulation" and "Materials Informatics / Database" to accelerate the efficiency of materials research and development and application, and to make materials science move towards "design on demand". final goal. High-throughput experiments can not only provide massive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C23/00C22C18/00C22C14/00
CPCC22C1/02C22C14/00C22C18/00C22C23/00
Inventor 罗岚康智华刘勇郭锐徐福民
Owner NANCHANG UNIV
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