Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of high-strength corrosion-resistant magnesium alloy and preparation method thereof

A magnesium alloy and corrosion-resistant technology, which is applied in the field of high-strength corrosion-resistant magnesium alloy and its preparation, can solve the problems of high production cost, achieve low cost, simple preparation method, and improve the mechanical properties of the alloy

Inactive Publication Date: 2019-11-26
HENAN UNIV OF SCI & TECH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alkaline earth elements (such as Ca) are mostly added in the form of master alloys, and the production cost is relatively high

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
  • A kind of high-strength corrosion-resistant magnesium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-strength corrosion-resistant magnesium alloy prepared from the following raw material components in mass percentage:

[0036] 7.5% Sn, 0.2% Bi, 0.3% Sb, the balance is Mg and unavoidable impurities.

[0037] The preparation method of the high-strength corrosion-resistant magnesium alloy comprises the following steps:

[0038] According to the composition ratio of the above-mentioned high-strength corrosion-resistant magnesium alloy, magnesium, tin, bismuth and antimony were placed in a corundum crucible (the crucible was placed in an induction furnace), and in CO 2 +SF 6 Smelting under the protection of mixed gas, after the raw materials are melted, when the temperature of the magnesium alloy solution rises to 720°C, it is cast into a steel mold to obtain an as-cast alloy, followed by heat treatment: solution treatment at 500°C for 4 hours, aging treatment at 225°C for 18 hours, and high Strength Corrosion Resistant Magnesium Alloy.

Embodiment 2

[0040] A high-strength corrosion-resistant magnesium alloy prepared from the following raw material components in mass percentage:

[0041] 7.2% Sn, 0.4% Bi, 0.2% Sb, the balance is Mg and unavoidable impurities.

[0042] The preparation method of the high-strength corrosion-resistant magnesium alloy comprises the following steps:

[0043] According to the composition ratio of the above-mentioned high-strength corrosion-resistant magnesium alloy, magnesium, tin, bismuth and antimony were placed in a corundum crucible (the crucible was placed in an induction furnace), and in CO 2 +SF 6 Smelting under the protection of mixed gas, after the raw materials are melted, when the temperature of the magnesium alloy solution rises to 720°C, it is cast into a steel mold to obtain an as-cast alloy, followed by heat treatment: solution treatment at 500°C for 3 hours, aging treatment at 225°C for 16 hours, and high Strength Corrosion Resistant Magnesium Alloy.

Embodiment 3

[0045] A high-strength corrosion-resistant magnesium alloy prepared from the following raw material components in mass percentage:

[0046] 7.0% Sn, 0.6% Bi, 0.1% Sb, the balance is Mg and unavoidable impurities.

[0047] The preparation method of the high-strength corrosion-resistant magnesium alloy comprises the following steps:

[0048] According to the composition ratio of the above-mentioned high-strength corrosion-resistant magnesium alloy, magnesium, tin, bismuth and antimony were placed in a corundum crucible (the crucible was placed in an induction furnace), and in CO 2 +SF 6 Melting under the protection of mixed gas, after the raw materials are melted, when the temperature of the magnesium alloy solution rises to 720°C, it is cast into a steel mold to obtain an as-cast alloy, followed by heat treatment: solution treatment at 500°C for 2 hours, aging treatment at 225°C for 14 hours, and high Strength Corrosion Resistant Magnesium Alloy.

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

PropertyMeasurementUnit
corrosion rateaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of metal materials, and particularly relates to a high-strength corrosion-resistant magnesium alloy and a preparation method thereof. The high-strength corrosion-resistant magnesium alloy is prepared from, by mass, 7.0-7.5% of Sn, 0.2-0.6% of Bi, 0.1-0.3% of Sb and the balance Mg and inevitable impurities. Components, including magnesium, tin, bismuth and antimony, of the high-strength corrosion-resistant magnesium alloy are smelted and cast to obtain as-cast alloy; then, heat treatment is performed on the as-cast alloy to obtain the high-strength corrosion-resistant magnesium alloy. The high-strength corrosion-resistant magnesium alloy has good room temperature strength and corrosion resistance, the tensile strength at the room temperature is higher than 270 MPa, and the corrosion rate in a 3.5wt% NaCl solution is lower than 0.6mm / a. Compared with commercial magnesium alloy AZ91, the high-strength corrosion-resistant magnesium alloy is higher in strength and better in corrosion resistance, and has wide application prospects in the fields of electronic products and the like.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a high-strength corrosion-resistant magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium alloy has the advantages of low density, high specific strength, good electromagnetic shielding and damping performance, stable size, low price, and easy recycling. It is known as "the most promising green engineering material in the 21st century". Among them, especially in the casing of electronic products (such as notebook computers, digital cameras, mobile phones, etc.), it has advantages that other materials cannot match. [0003] Although some magnesium alloys with better performance have appeared one after another, they generally contain rare earth elements with high prices, which makes the cost of the alloy too high and the application is limited. Mg-Al alloys are important commercial low-cost magnesium alloys, and AZ91 is one o...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C1/02C22F1/06
CPCC22C1/02C22C23/00C22F1/06
Inventor 张清朱利敏陈晓亚陈君李全安曹凌桢姜永耀李朝玉汪本路
Owner HENAN UNIV OF SCI & TECH