Method for improving performance of Mg/Al jointing interface

A technology for connecting interface and performance, applied in chemical instruments and methods, lamination, layered products, etc., can solve the problems of poor interface bonding strength, complex production process, unstable product quality, etc. Improve the overall performance and improve the effect of casting defects

Active Publication Date: 2019-08-30
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of complex production process, unstable product quality and poor interface bonding strength ...

Method used

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  • Method for improving performance of Mg/Al jointing interface
  • Method for improving performance of Mg/Al jointing interface
  • Method for improving performance of Mg/Al jointing interface

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Experimental program
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specific Embodiment approach 1

[0028] Specific Embodiment 1: This embodiment is a method for introducing a SiCp reinforcement phase to improve the interface of the Mg / Al layer, which is specifically carried out according to the following steps:

[0029] First, the preparation of SiCp / AMCs. The particle size of SiCp is 10 μm, and the particle volume fraction is 10%. Place the measured silicon carbide particles in a drying furnace, rise to 600° C. with the furnace and keep it warm for 2-3 hours. Preheat the die-casting mold to 150°C and brush with graphite oil, then preheat to 400°C and keep it warm for 1-3 hours. Before preparing AMCs, talcum powder and ZnO were evenly coated on the inner surface of the crucible to block the possible reaction between the crucible and the melt. AMCs were prepared by semi-solid stirring casting method. Before the aluminum alloy was completely melted, the Ar+CO2 mixed gas was introduced, and the aluminum alloy was kept at about 100°C (760°C) above the melting point of the alum...

specific Embodiment approach 2

[0035] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the volume fraction of spherical SiCp described in step 1 is 5%, and the others are the same as Embodiment 1.

specific Embodiment approach 3

[0036] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the volume fraction of spherical SiCp described in step 1 is 15%, and the others are the same as Embodiment 1.

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Abstract

The invention provides a high-strength high-conductivity Cu-Ag-Sc alloy and a preparation method thereof, discloses a method for introducing a silicon carbide particle strengthening phase by designinga composite material middle layer to improve a Mg/Al layer interface, and relates to a preparation method of an aluminum/aluminum-based composite material/magnesium/aluminum-based composite material/aluminum layered material for improving the performance of the magnesium/aluminum interface. The method comprises the steps that firstly, a SiCp strengthened aluminum-based composite material of whichparticles are evenly distributed is prepared by adopting a semi-solid-state stirring casting method, then hot rolling is conducted, and an aluminum-based composite material component plate with the excellent matrix grain refinement performance is obtained; and secondly, hot pressing and annealing are conducted on metal laminated plates stacked according to the aluminum/aluminum-based composite material/magnesium/aluminum-based composite material/aluminum order. According to the method, on the one hand, the dispersion strengthening effect and the fine grain strengthening effect are generated on component layer metal; and on the other hand, the toughness of the interface area is improved, and the comprehensive performance of the composite plate can be significantly improved.

Description

technical field [0001] The invention relates to a preparation method of "aluminum / aluminum-based composite material / magnesium / aluminum-based composite material / aluminum" layered material for improving magnesium / aluminum interface performance. Background technique [0002] In engineering applications, magnesium and magnesium alloys have disadvantages such as low strength, low stiffness, poor corrosion resistance, and poor room temperature plasticity, especially poor corrosion resistance, which is one of the main reasons that limit their wide application. Magnesium / aluminum layered composites protect magnesium alloys from corrosion while taking into account the various performance advantages of magnesium alloys and aluminum alloys, and are widely used. At present, most of them are prepared by explosive welding method and rolling compound method. The explosive welding method uses the high pressure and high heat generated by the explosive explosion to realize the firm combinati...

Claims

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Application Information

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IPC IPC(8): B21C37/02B21B1/38B32B37/06B32B37/10C22C1/10C22C21/00C22C32/00B22D17/00
CPCB21C37/02B21B1/38B32B37/06B32B37/10C22C1/1036C22C21/00C22C32/0063B22D17/007B21B2001/386C22C1/1047
Inventor 邓坤坤曹苗王翠菊史权新聂凯波梁伟
Owner TAIYUAN UNIV OF TECH
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