Method for preparing fcc-Al reinforced amorphous/aluminum laminar composite material on basis of accumulative roll bonding

A layered composite material, fcc-al technology, applied in the direction of metal rolling, can solve the problem of limited size, etc., to achieve the effect of improved mechanical properties and simple preparation process

Inactive Publication Date: 2019-07-23
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Partial crystallization of amorphous is the fastest and most effective m...

Method used

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  • Method for preparing fcc-Al reinforced amorphous/aluminum laminar composite material on basis of accumulative roll bonding
  • Method for preparing fcc-Al reinforced amorphous/aluminum laminar composite material on basis of accumulative roll bonding
  • Method for preparing fcc-Al reinforced amorphous/aluminum laminar composite material on basis of accumulative roll bonding

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Experimental program
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Embodiment 1

[0025] 1. Al, Ni, Y, Co metal according to Al 85 Ni 5 Y 8 co 2 The stoichiometric ratio is weighed, placed in a vacuum electric arc furnace for repeated melting 4 times, the master alloy ingot is smashed, part of it is placed in a quartz porcelain boat, graphite four electrodes are placed at a certain distance, and a tungsten wire is used to lead out and a constant current source As well as the nanovoltmeter connection, the K-type thermocouple is used to calibrate the temperature. The above-mentioned electrodes and thermocouples are separated by porcelain sleeves to prevent the connection short circuit from affecting the current. Then put the bound sample in a vacuum tube resistance furnace, and vacuumize to 8×10 -2 Pa, after filling with argon, raise the furnace temperature to 1573K at a heating rate of 5K / min and keep it for 30min, so that the metal melts and fills the bottom of the porcelain boat, solidifies into a certain shape, and then cools down to room temperature w...

Embodiment 2

[0030] Method is with embodiment 1, and difference is:

[0031] 1. The composition of amorphous alloy is Al 86 Ni 8 Y 6 Alloy, its melt structure transformation range is 1121K-1387K.

[0032] 2. Select the melt temperature to be 1600K to prepare amorphous thin strips.

[0033] 3. The heating temperature selected when rolling with 1060Al plate is 280°C, and the cumulative rolling is accumulated after preheating for 5 minutes. The hardness of the layered material is 48.5HV, the tensile strength is 155MPa, and the elongation is 12.5%.

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Abstract

The invention provides a method for preparing a fcc-Al reinforced amorphous/aluminum laminar composite material on the basis of accumulative roll bonding. The method for preparing the fcc-Al reinforced amorphous/aluminum laminar composite material on the basis of accumulative roll bonding is carried out according to the following steps: (1) taking metals Al, Ni, Y and Co as raw materials, and preparing a mother alloy containing different components by virtue of vacuum electric arc melting; (2) choosing a temperature after melt structure transition and preparing amorphous ribbons; (3) cleaningthe amorphous ribbons and the surface of an aluminum alloy, then arranging the amorphous ribbons between two layers of aluminum plates separately and fully laying the amorphous ribbons, and tightly riveting by virtue of rivets and then rolling; and (4) cutting the rolled-compounded plates into two pieces with an equal size in a direction vertical to a rolling direction, stacking the two pieces again, and continuously repeating the process to obtain the laminar composite material. The method for preparing the fcc-Al reinforced amorphous/aluminum laminar composite material on the basis of accumulative roll bonding is started with the amorphous melt structure transition, the mechanical property of the laminar composite material obtained by preparing the amorphous ribbons with the widest crystallization temperature range at first, and then carrying out accumulative roll bonding with 1060 aluminum is greatly improved, and then an application prospect is provided for the aluminum-based amorphous ribbon material.

Description

technical field [0001] The invention relates to an aluminum alloy composite material, in particular to a method for fcc-Al reinforced amorphous / aluminum-based layered composite material prepared by accumulative stack rolling. Background technique [0002] In recent years, with the rapid development of aviation, spaceflight and transportation vehicles, reducing energy consumption and advocating low-carbon life have become the theme of the times, which makes the research and development of high-strength toughness and low-density materials highly valued, such as Al-based amorphous alloy material. When the Al-based amorphous nanocrystalline composite material is formed through a reasonable preparation process, when an appropriate amount of nanoscale fcc-Al particles are precipitated on the amorphous matrix, not only can the strength of the material be further improved (up to 3200MPa), it can be comparable to ceramic materials. , and can maintain good toughness and high corrosio...

Claims

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Application Information

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IPC IPC(8): B21B1/38C22C45/08
CPCB21B1/38B21B2001/386C22C45/08
Inventor 王知鸷章星宇江鹏吴王平
Owner CHANGZHOU UNIV
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