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Rolled (FeCoNiCrRn/Al)-2024Al composite board and preparation method therefor

A composite plate and composite material technology, applied in metal rolling and other directions, can solve problems such as low ductility and limited application range, and achieve the effect of saving costs and improving the mechanical properties of materials

Active Publication Date: 2020-12-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low ductility and localized susceptibility to breaking severely limit its range of applications

Method used

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  • Rolled (FeCoNiCrRn/Al)-2024Al composite board and preparation method therefor
  • Rolled (FeCoNiCrRn/Al)-2024Al composite board and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of medium entropy alloy powder: the reinforcing base is FeCoNiCrC 0.2 For medium-entropy alloys, according to the ratio of atomic number 1:1:1:1:0.2, calculate and weigh the corresponding mass of powder, put the mixed powder in the ball mill jar, vacuumize and pass in argon, and then high-energy Ball milling for mechanical alloying. The parameters of ball milling are as follows: the mass ratio of ball to material is 12:1, dry milling for 30 hours at a speed of 150 r / min, and then adding absolute ethanol as a process control agent, wet milling for 12 hours at a speed of 300 r / min. Dry for 60h to obtain high entropy alloy powder.

[0030] (2) Preparation of composite powder: the high-entropy alloy powder particles and pure aluminum powder are mixed, and the addition amount of the high-entropy alloy powder particles of the reinforcing phase is 20% by mass fraction. The composite powder is obtained by ball milling with a ball mill, and the ball milling is ...

Embodiment 2

[0036] (1) Preparation of medium entropy alloy powder: the reinforcing base is FeCoNiCrC 0.5 For medium-entropy alloys, according to the ratio of atomic number 1:1:1:1:0.5, calculate and weigh the corresponding mass of powder, put the mixed powder in the ball mill jar, vacuumize and pass in argon, and then high-energy Ball milling for mechanical alloying. The parameters of ball milling are as follows: the mass ratio of ball to material is 12:1, dry milling for 30 hours at a speed of 150 r / min, and then adding absolute ethanol as a process control agent, wet milling for 12 hours at a speed of 300 r / min. Dry for 60h to obtain high entropy alloy powder.

[0037] (2) Preparation of composite powder: the high-entropy alloy powder particles and pure aluminum powder are mixed, and the addition amount of the high-entropy alloy powder particles of the reinforcing phase is 20% by mass fraction. The composite powder is obtained by ball milling with a ball mill, and the ball milling is ...

Embodiment 3

[0043] (1) Preparation of medium entropy alloy powder: the reinforcing base is FeCoNiCrB 0.5 For medium-entropy alloys, according to the ratio of atomic number 1:1:1:1:0.5, calculate and weigh the corresponding mass of powder, put the mixed powder in the ball mill jar, vacuumize and pass in argon, and then high-energy Ball milling for mechanical alloying. The parameters of ball milling are as follows: the mass ratio of ball to material is 12:1, dry milling for 30 hours at a speed of 150 r / min, and then adding absolute ethanol as a process control agent, wet milling for 12 hours at a speed of 300 r / min. Dry for 60h to obtain high entropy alloy powder.

[0044] (2) Preparation of composite powder: the high-entropy alloy powder particles and pure aluminum powder are mixed, and the addition amount of the high-entropy alloy powder particles of the reinforcing phase is 20% by mass fraction. The composite powder is obtained by ball milling with a ball mill, and the ball milling is ...

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Abstract

The invention provides a rolled (FeCoNiCrRn / Al)-2024Al composite board and a preparation method therefor. The composite material takes pure aluminum as a matrix; a FeCoNiCrRn medium-entropy alloy withhigh strength and toughness is added as a reinforcing item; and then a FeCoNiCrRn / Al composite material and a 2024 aluminum alloy are laminated, rolled and compounded to obtain the (FeCoNiCrRn / Al)-2024Al composite board. The problems that a high-strength aluminum-based composite material is prone to instant fracture, low in ductility and the like are solved; and the comprehensive performance of the material is improved. The medium-entropy alloy reinforced aluminum-based composite material is prepared by adopting a microwave sintering technology; and the (FeCoNiCrRn / Al)-2024Al metal compositeplate is prepared by using hot-roll compounding. The composite board material prepared by the method has excellent comprehensive mechanical properties, and has very high application value for promoting the application of modern light efficient industrial materials such as aerospace and new energy automobiles.

Description

technical field [0001] The invention belongs to the field of composite plate preparation, and relates to a method for preparing a rolled aluminum alloy / aluminum-based composite material composite plate, in particular to a (FeCoNiCrR n / Al)-2024Al composite plate and its preparation method. Background technique [0002] Due to the introduction of reinforcements, traditional particle-reinforced aluminum matrix composites have excellent properties such as high strength, high wear resistance, high specific modulus, and high dimensional stability. Wide range of applications. The low ductility and local susceptibility to breaking severely limit its application range. Therefore, the development of a composite sheet with both the high strength of aluminum matrix composites and the good plasticity of aluminum alloys has received widespread attention, further improving its application potential. [0003] The new type of medium entropy alloy is obtained by alloying two to four main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/04B22F9/04B22F3/105B22F7/04B22F3/18B21B1/38
CPCC22C21/00C22C1/0416B22F9/04B22F3/105B22F7/04B22F3/18B21B1/38B22F2009/041B22F2009/043B22F2003/1054B22F2007/042B21B2001/386B23K20/04B23P17/00B21B2001/383B23K2101/18B23K2103/18B23K2103/10B23K20/2336B23K20/24B22F2003/185B22F2998/10B22F2999/00B22F2201/11B22F3/14B22F3/24
Inventor 王宏明任文祥李桂荣
Owner JIANGSU UNIV
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