Influence of aluminum melt nickel alloying on liquid-phase processes at formation of composite materials foam-aluminum-titanium

ABSTRACT

Foam aluminium is a promising material with a unique combination of mechanical and operational properties: low specific gravity, low coefficient of thermal conductivity, ability to absorb acoustic and electromagnetic oscillations, the ability to deform under constant load. To increase the mechanical properties of foams, it has been proposed to use layered composite structures as foam aluminium-titanium, which can be successfully prepared by mould filling with molten aluminium with installed titanium sheets, between which is a layer of water-soluble granules. Increasing the adhesion strength between foam aluminium and titanium is ensured by aluminium alloying with nickel. The process investigation of aluminium wetting and spreading doped with nickel on titanium under the conditions of formation of foam aluminium-titanium composites is carried out. The influence of flux composition, melt temperature and degree of doping on the spreading area of aluminium on titanium, the wetting strength and adhesion strength of aluminium and titanium are established.

KEYWORDS:

• Foam aluminium
• titanium
• composite material
• activating flux
• wetting
• spreading
• adhesion strength
• aluminium melt

Additional information

Funding

The original work was undertaken with the financial support of the Ministry of Education and Science of the Russian Federation in the framework of State Order No. 11.6065.2017/8.9.