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Publications (22)
In the manufacture of three-layer corrugated structures made of titanium alloys by diffusion bonding followed by superplastic forming, stop-off materials are used. The use of stop-off material makes it possible to selectively connect sheet blanks with each other and, as a result, get a hollow structure with an internal set of stiffeners in the form...
The paper presents the results of studies on the mechanical behavior under impact and tensile loading of a Ti-6Al-4V three-layer material obtained by diffusion bonding at 800°C. Diffusion bonding is the process that integrates one material with another by pressure at a temperature below the melting points of materials. Diffusion bonding of Ti-6Al-4...
The results of studies on the mechanical behavior of a Ti-6Al-4V laminated material obtained by diffusion welding are analyzed. It is shown that the impact behavior of the layered material depends on many factors including the interface defects, the orientation of the notch tip relative to interface, the number and microstructural state of the laye...
The main point of successful manufacture of metallic composites by direct bonding of dissimilar materials is achieving a homogeneous interface bonding. Two different types of deformation techniques for fabrication of metal composites were investigated. The first one was developed on the basis of high pressure torsion associated with a high energy i...
Structural methods for controlling the properties of a layered material (LM) based on Ti-6Al-4V alloy are presented in this
work. The layered materials were manufactured by diffusion bonding. They consist of seven and thirteen sheets of the thickness
about 1.5 and 0.8 mm, respectively. Two methods of assembling the sheets were used: in one case, th...
The paper studies the phase composition, microstructure, and mechanisms of plastic deformation and fracture under impact load in a laminate obtained by pressure welding of VT6 titanium alloy sheets. Under impact loading at 20 and -196°C, the material is delaminated into sheet piles with attendant changes in their fracture rate. At fracture surfaces...
In the work, we investigate in detail the mechanisms of plastic deformation, structure transformations and fracture in layered VT6-based material under shock loading.
Two multilayer materials based on Ti-6Al-4V alloy have been processed by diffusion bonding at two different temperatures [1023 K and 1173 K (750 °C and 900 °C)]. The influence of the processing temperature on microstructure, texture, and mechanical properties of the two multilayer materials has been analyzed. Scanning electron microscopy, X-ray dif...
Microstructure and mechanical properties, with emphasis in impact toughness behaviour, of two multilayer composites have been investigated. The multilayer materials are constituted by thirteen layers of high strength Ti–6 Al–4 V alloy. Stacked layers have been successfully joined by diffusion bonding considering two processing temperatures, 750 and...
We compare the mechanical behavior of samples under shock
loading made of VT6 titanium alloy with different structures:
coarse-crystalline (CC) structure with lamellar morphology
of phases, microcrystalline (MC) structure with globular
morphology of phases, and nanostructure (NS). The test results
show that the alloys with CC and MC structures have...
The mechanical behavior of pressure-welded VT6 titanium alloy sheets under shock loading was studied. It is shown that the impact strength of its layered material depends on both the location of its joint surfaces relative to a propagating crack and the relative extent of pores in the zone of solid-phase joints. If pores are present in the material...
Layered semiproducts produced by pressure welding of sheet workpieces of a VT6 titanium alloy are studied. Possible methods
of achieving isotropic mechanical properties of the semiproducts are discussed. The pores that are present in solid-phase
joint zones are found not to influence the impact toughness of the samples in which layers lie perpendic...
Titanium alloy Ti-6AI-4V is used to manufacture the layered material by means of diffusion bonding techniques. The layered material consists of sheets with nano-and microcrystalline structures. The layered material is investigated by conducting the mechanical tests and metallographic studies. The possibility to achieve isotropy in mechanical proper...
