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Magnesium-based composite material for toughening and modulus increasing by using entropy alloy particles and preparation method of magnesium-based composite material

A composite material and entropy alloy technology, which is applied in the field of magnesium matrix composite materials and its preparation, can solve the problems of alloy strengthening and toughening and stiffness without obvious progress, entropy alloy particle dispersion reinforcement/matrix interface and other problems, and achieve stiffness The effect of improving, inhibiting crack growth, and improving toughness

Active Publication Date: 2022-03-11
HOHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are few studies on entropy alloy reinforced magnesium matrix composites, and no significant progress has been made in the strengthening, toughening and stiffness of the alloy. The main reason is that the dispersion of entropy alloy particles in the magnesium alloy matrix and the reinforcement / Matrix Interface Issues

Method used

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  • Magnesium-based composite material for toughening and modulus increasing by using entropy alloy particles and preparation method of magnesium-based composite material

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Experimental program
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Effect test

Embodiment 1

[0033] Selection of particle size of 50μm and AZ31 magnesium alloy powder particle diameter of 10μm Al 80 Li 5 Mg 5 Zn 5 Cu 5 Entropy alloy powder, a mass percentage entropy alloy powder is 10% the ingredients were weighed and mixed well mixed powder process: The above 19.5mm 19.5mm × 45mm × volume of powder in line with the silicone oil was added 200mL of saturated acetone solution, sonicated shaken and mixed thoroughly mechanical stirring 1h; then acetone solution was filtered off to give a silicone oil mixed with the paper powder, due to the flow characteristics of silicone oil, there is only a small amount of silicone oil is not filtered out and mixed in the powder, which may be part of the silicone oil during subsequent deformation increase the mobility between the powder, and discharged at a higher temperature thermal processing. Cold block size is then to blank 19.5mm × 19.5mm × 45mm, the pressing pressure is 20 MPa or, dwell time 3min. The iron foil is uniformly coated in ...

Embodiment 2

[0035] Selection of the particle size of the magnesium alloy AZ31 100μm particle size of 50μm and powder of Al 80 Li 5 Mg 5 Zn5 Cu 5 Entropy alloy powder according entropy mass percentage is 10% Alloys ingredients were weighed and mixed well mixed powder process: The above 19.5mm 19.5mm × 45mm × volume of powder in line with the silicone oil was added 170mL of saturated acetone solution, ultrasonic oscillation mixed and mechanically stirred for 1.5h; silicone oil was filtered off and then the acetone solution was mixed with a filter paper powder. Then cold parison to a size of a block of 19.5mm × 19.5mm × 45mm, the pressing pressure of 40MPa, dwell time 3min. The iron foil is coated uniformly in thickness of 0.3mm after the cold block around transfected into a lumen dimensions of 20mm × 20mm × 45mm molds channel angular extrusion die, and a good block in the coating and ECAP rotary die lubricant is applied between the mold cavity, at a reduction speed of 0.1mm / s an extruded view...

Embodiment 3

[0037] Selection of particle size 150μm and AZ31 magnesium alloy powder particle size of Al 80μm 80 Li 5 Mg 5 Zn 5 Cu 5 Entropy alloy powder according entropy mass percentage is 10% Alloys ingredients were weighed and mixed well mixed powder process: The above 19.5mm 19.5mm × 45mm × volume of powder in line with the silicone oil was added 220mL of saturated acetone solution, ultrasonic oscillation mixed and mechanically stirred for 2h; silicone oil was filtered off and then the acetone solution was mixed with a filter paper powder. Then cold parison to a size of a block of 19.5mm × 19.5mm × 45mm, the pressing pressure of 80MPa, dwell time 3min. The iron foil is coated uniformly in thickness of 0.3mm after the cold block around transfected into a lumen dimensions of 20mm × 20mm × 45mm molds channel angular extrusion die, and a good block in the coating and ECAP rotary die lubricant is applied between the mold cavity, at a reduction speed of 0.05mm / s pressing two views 150 ℃; then...

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Abstract

The invention discloses a magnesium-based composite material for toughening and modulus increasing by using entropy alloy particles. The magnesium-based composite material comprises the following components in percentage by mass: 5-20% of entropy alloy powder and the balance of magnesium alloy powder. The invention further discloses a preparation method of the magnesium-based composite material for toughening and modulus increasing through the entropy alloy particles. The preparation method comprises the following steps that firstly, material preparation is conducted, wherein entropy alloy powder and magnesium alloy powder are weighed according to the proportion; step 2, powder mixing: placing the powder in a saturated silicone oil acetone solution, performing ultrasonic oscillation and mechanical stirring for at least one hour, and fully mixing; and thirdly, cold pressing is conducted, specifically, the evenly-mixed powder is subjected to cold pressing into a cuboid mold. Metallurgical processing is realized by utilizing specific temperature-increasing and speed-increasing equal-channel angular pressing combined processing and matching with particle size characteristics of entropy alloy and magnesium matrix powder, and an interface transition layer of Mg and Al elements is formed at an interface of entropy alloy particles and a magnesium matrix, so that the interface strength is enhanced; and the entropy alloy particle toughening and modulus increasing magnesium-based composite material with good comprehensive mechanical properties is obtained.

Description

Technical field [0001] The present invention relates to a toughened alloy particles increases entropy magnesium-based composite material molding and a preparation method, belonging to the technical field processing magnesium alloy. Background technique [0002] Magnesium alloys have low density, specific strength and specific stiffness, earthquake, strong noise reduction capabilities, easy-to-many excellent performance machining in the aerospace, automotive, electronics and many other fields have a good prospect. In particular, with the rapid development of new energy automotive industry in recent years, and as well as in carbon, the carbon peak background, magnesium alloy as a typical lightweight materials, its application has been more and more attention. However, low modulus of elasticity of magnesium alloy, low strength reasons, to limit the application of magnesium alloy as a structural material. [0003] Entropy alloy is an alloy system of rapid development in recent years,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/04B22F3/20B22F3/10B22F1/10
CPCC22C23/02C22C1/0408B22F3/20B22F3/1007B22F2003/208
Inventor 刘欢吴玉娜白晶梅小明王胜青徐正祥范付军徐旭
Owner HOHAI UNIV
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