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

High strength and ductility high-damping wrought magnesium alloy and preparation thereof

A deformed magnesium alloy and high damping technology, applied in the field of magnesium-based materials and their preparation, to achieve the effects of strong portability, high damping performance, and increased strength and plasticity

Inactive Publication Date: 2010-01-06
HARBIN INST OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the contradictory problem between the damping performance and the mechanical performance of the existing magnesium alloy, the present invention proposes a high-strength, high-toughness, high-damping deformable magnesium alloy and its preparation method

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

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] Specific embodiment 1: The high-strength, high-damping, deformable magnesium alloy of this embodiment is a Mg-Si-Cu alloy, and the weight percentage of each component is: 0.5 to 5% of silicon, 0.2 to 3% of copper, and Fe<0.003%, Ni<0.003%, other impurities<0.06%, the balance is magnesium.

specific Embodiment approach 2

[0014] Specific embodiment 2: In this embodiment, the Mg-Si-Cu magnesium alloy is prepared according to the following method:

[0015] (1) Put industrial high-purity magnesium with a purity greater than 99.96% in a 0.5% NaOH aqueous solution and soak for 0.5 hours, then dry it in a 150℃ drying oven; put the dry pure magnesium into an iron crucible to melt, and the protective atmosphere is 10vol%SF 6 +90% CO 2 , Heat up to 750-850°C, take 0.5-5% of silicon and 0.2-3% of copper according to weight percentage, add alloying elements, and add silicon and copper in the form of industrial pure element. After adding alloy elements, fully stir the melt and let it stand for 20 minutes to remove the scum on the surface of the melt, and cool to 640-680°C and cast into an iron mold.

[0016] (2) The molten magnesium alloy ingot is subjected to conventional hot extrusion. The hot extrusion is carried out on a hydraulic press. The extrusion temperature is 320~400℃, the holding time is 30 minutes,...

specific Embodiment approach 3

[0018] Specific embodiment three: This embodiment is different from the specific embodiment two in that after the magnesium alloy ingot is subjected to hot extrusion, multi-directional forging (MDF) is performed, and the multi-directional forging temperature is 150-350 ℃, strain rate is 1×10 -3 ~3×10 -2 S -1 . The three-axis (X, Y, Z) deformation sequence is X→Y→Z, the angle between X, Y and Z is 90° and meets the right-hand rule; the forging strain in each direction is 0.3~1.0, and the cumulative strain The variable is 7-10. The yield strength is 203MPa, the tensile strength is 287MPa, the elongation is 18%, Q -1 It is 0.016.

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
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-toughness high-damping magnesium alloy and the preparation method thereof and relates to magnesium-based material with high damping and good mechanical performance and the preparation method thereof. The invention solves the contradiction between the damping performance and the mechanical performance of the magnesium alloy; the proportion of the invention is: Si of 0.5 to 5 percent, Cu of 0.2 to 3 percent, Fe of less than 0.003 percent, Ni of less than 0.003 percent, other impurities of less than 0.06 percent, the remainder is magnesium. The preparation method is that: at first, high-pure magnesium is placed into NaOH aqueous solution, dried, then placed into a crucible for melting, is made a temperature rise to between 750 and 850 DEG C by adopting protective atmosphere, added with alloy elements according to the proportion, stirred and kept, then floating slags are fished out, the solution is made a temperature drop to between 640 and 680 DEG C to cast; the casting ingot is made a routine heat extrusion deformation, the temperature is controlled between 320 and 400 DEG C, the time of thermal insulation is 30 minutes, the extrusion speed is between 50 and 120mm / min, the extrusion ratio is 9-16:1, then the casting ingot is made a severe plastic deformation; finally the casting ingot is made a heat treatment, the temperature is controlled between 150 and 350 DEG C, the time of thermal insulation is between 0.5 and 10 hours. The invention successfully solves the contradiction between the strength and the damping performance of the magnesium alloy; the used equipment are all universal equipments, so the invention has strong implantability and low cost.

Description

[0001] This application is a divisional application made by the filing date: July 26, 2006, the application number: 2006100103268, and the invention title: high-strength, high-damping deformed magnesium alloy and its manufacturing method. Technical field [0002] The invention relates to a magnesium-based material with high damping and excellent mechanical properties and a preparation method thereof. Background technique [0003] Among the practical metal materials, magnesium and its alloys have the lowest density and are known as the ultra-lightweight materials of the 21st century. After the 1990s, with the development of magnesium smelting technology, the output of magnesium increased rapidly and the price decreased. Especially in the fields of automobiles, electronics, communications, aerospace and defense and military industries, the increasing demand for magnesium alloys brought about A new round of magnesium research and application climax. In addition to low density, magne...

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): C22C23/00C22C1/02B22D21/04C22F1/06
Inventor 郑明毅乔晓光吴昆
Owner HARBIN INST OF TECH