Mechanical properties of arc welded in vacuum Ti-6Al-4V alloy
Journal Title: Proceedings of the International Conference on Advanced Materials and Systems (ICAMS) - Year 2018, Vol 1, Issue
Abstract
Titanium alloys are known for their good mechanical properties, low density, excellent corrosion resistance and low thermal conductivity. These properties define titanium and its alloys as highly suitable for medicine, automotive and aerospace industries. Unfortunately, the thermal cycle during welding of alpha-beta alloys (Ti-6Al-4V) can significantly change their strength, toughness and plasticity. The scope of present work is to investigate the possibility for producing Ti-6Al-4V welds by arc discharge in vacuum and to establish the influence of the welding parameters on dimensions and mechanical properties of the welds. The experiments presented here were carried out in an installation for hollow cathode arc treatment in vacuum. Cylindrical and elliptical tantalum cathodes were used. The welding was carried out without filler material and groove. Tensile test and hardness test of specific welds zones were used for mechanical properties determination. The results, presented in this work, describe the dimensions of the fusion zone and heat affected zone of welds, produced by hollow cathode arc welding using different welding parameters. The mechanical properties of the welds were determined.
Authors and Affiliations
Nikolay Vasilev Ferdinandov, Danail Dimitrov Gospodinov, Mariana Dimitrova Ilieva, Rossen Hristov Radev
Deposition of metal – nanoparticles in textile structure by chemical reduction method for UV-shielding
Now mankind is exposed to danger of UV-radiation (UVR) for health and it is very important to create reliable ways for protection against it. For UVR impact reducing, various shielding materials are used. Special place a...
Manufacturing and properties of nonwovens based on waste from elastic fibers
The article proposes and implements the use of highly flexible combined filament yarns (Nylon 6.6/Lycra) as the main raw material for the production of needle-punched nonwoven materials for technical purposes. It has bee...
Studies on structural, surface morphological, optical, luminescence and UV photodetection properties of sol gel oxides thin films
ZnO and ZnCoO thin films have been deposited onto glass substrates by sol–gel spin coating method. Zinc acetate dihydrate, cobalt acetate tetrahydrate, Isopropanol and monoethanolamine (MEA) were used as a precursor, dop...
Novel myco-composite material obtained with Fusarium oxysporum
Modern world environmental challenges dictate the need for obtaining of alternative materials in various industrial sectors. Filamentous fungi strains are complex microorganisms that are able to produce rich enzymes batt...
Antibacterial and UV protective effects of cotton fabrics dyed with Brasi-Color extract
The wood of the Caesalpinia sappan species is the main source of red dyes used for dyeing textiles and paper, stain biological samples, metals identification, as anti-convulsant, immunosuppressant, anti-inflammatory, ant...