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High-strength and high-plasticity heat-resistant and fire-resistant magnesium alloy and manufacturing method thereof

A manufacturing method and high plasticity technology, applied in the field of high-strength, high-plasticity, heat-resistant and flame-resistant magnesium alloy and its manufacturing

Active Publication Date: 2019-09-03
CHINA BAOWU STEEL GRP CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its tensile strength is 330MPa, yield strength is 200MPa, and elongation is 14%, and it does not involve the optimization of the flame resistance of magnesium alloys

Method used

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  • High-strength and high-plasticity heat-resistant and fire-resistant magnesium alloy and manufacturing method thereof
  • High-strength and high-plasticity heat-resistant and fire-resistant magnesium alloy and manufacturing method thereof
  • High-strength and high-plasticity heat-resistant and fire-resistant magnesium alloy and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1-3

[0066] Table 1 lists the mass percentages of various chemical elements in the high-strength, high-ductility, heat-resistant and flame-resistant magnesium alloys of Examples 1-6 and the conventional magnesium alloys of Comparative Examples 1-3.

[0067] Table 1. (wt%, the balance is Mg and other unavoidable impurities)

[0068] Al Ca mn sn Zn Si Sr Example 1 2.5 2.0 0.25 1.0 2.5 0.15 0.5 Example 2 1.5 0.5 0.4 2.5 2.2 0.1 0.1 Example 3 0.5 1.0 0.15 1.5 2.0 0.3 0.2 Example 4 1.0 1.5 0.2 1.0 1.0 0.5 0.4 Example 5 2.2 0.8 0.5 2.0 1.5 0.4 0.3 Example 6 0.8 1.9 0.1 3.0 0.5 0.2 0.25 Comparative example 1 0.2

2.5

0.05

0.5

0.3

0.2 0.05

Comparative example 2 3.0

0.1

0.6

6

3

0.2 0.8

Comparative example 3 0.8 1.9 0.1 3.0 0.5 0.2 0.25

[0069] The manufacturing method of the high-strength, high-plasticity, heat-re...

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Abstract

The invention discloses a high-strength and high-plasticity heat-resistant and fire-resistant magnesium alloy. The alloy comprises the following chemical elements of, in percentage by mass, 1.0%-3.0%of Sn, 0.5%-2.5% of Al, 0.5%-2.0% of Ca, 0.1%-0.5% of Mn, 0.5%-2.5% of Zn, 0.1%-0.5% of Si, 0.1%-0.5% of Sr, and the balance Mg and other inevitable impurities. The invention further discloses a manufacturing method of magnesium alloy extruded material prepared from the high-strength and high-plasticity heat-resistant and fire-resistant magnesium alloy. The method comprises the following steps of(1) smelting and casting raw materials to obtain a magnesium alloy blank ingot; (2) heating the magnesium alloy blank ingot to heat treatment temperature preservation temperature in a heating rate of2 DEG C / s-100 DEG C / s, wherein the temperature range is 200 DEG C-450 DEG C, and the heat preservation time is 5 min-1000 min; (3) reheating the magnesium alloy blank ingot to extrusion preheating setting temperature in the heating rate of 2 DEG C / s-100 DEG C / s, preheating the magnesium alloy blank ingot for a period of time, wherein the extrusion preheating setting temperature is 50 DEG C-300 DEGC; (4) extruding the magnesium alloy blank ingot into the magnesium alloy extruded material by adopting an extruding machine; and (5) carrying out aging treatment after extruding.

Description

technical field [0001] The invention relates to a magnesium alloy and a manufacturing method thereof, in particular to a high-strength, high-plasticity heat-resistant and flame-resistant magnesium alloy and a manufacturing method thereof. Background technique [0002] Magnesium is the lightest of commonly used metal structural materials, with a specific gravity of about 1.7g / cm 3 , is 1 / 4 of steel and 2 / 3 of aluminum. Magnesium and magnesium alloys have the three advantages of rich resources, energy saving, and environmental friendliness, and are lightweight structural materials and functional materials with high specific strength. However, due to the insufficient strength and elongation of magnesium alloys, low ignition point, and insufficient heat resistance, the application range of magnesium alloys is limited to a certain extent. [0003] At present, in the alloying research of high-strength magnesium alloys, the addition of alloying elements is mainly concentrated on ...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C23/02C22C23/04C22C1/02C22F1/06
CPCC22C1/02C22C23/00C22C23/02C22C23/04C22F1/06
Inventor 唐伟能徐世伟张成谢玉
Owner CHINA BAOWU STEEL GRP CORP LTD
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