Abstract The formation of shear bands (SBs) at high strain rates directly precedes the fracture metals. Their appearance in microstructure signals a reduction or complete loss load-bearing properties metallic parts. This paper analyses crystallographic aspects mechanism responsible for occurrence this form unstable metal flow under model conditions. study examined Cu single crystals with orientations close to C{112}<111> and S{123}<634>, which were deformed logarithmic strains...

Abstract In this study, single-crystal samples of pure copper with stable orientations – Br (110)[112] and G(110)[001] were impact-loaded in a channel die, the punch driven by explosive energy, to achieve strain rate 4 × 10 5 s −1 . Microstructural characterization was conducted on deformed up 60%, using optical microscopy SEM across wide range scales. Texture evolution analysed through X-ray diffraction SEM/EBSD. Both exhibited highly unstable behaviour due deformation twinning development...

This article assesses the tribological performance of new composite tool sets for stamping dies. Four countersamples were tested. These consisted polyurethane resin with mineral filler (base variant) and modified aluminium powder (10wt%) roving fabric (5wt%). Strip samples strip drawing tests cut from AMS5599 (Inconel 625) corrosion-resistant nickel alloy, AMS5510 (321) corrosion heat-resistant steel AMS6061-T4 heat treatable alloy sheet metals. The influence type sample material on...

The article presents the results of research on influence plastic deformation microstructure and tensile strength Haynes 282 nickel superalloy produced by direct metal laser sintering (DMLS) a conventional technique (casting). Samples were tested for dimensional accuracy using 3D scanner. Then, samples subjected to rolling. microstructures DMLS as-cast analysed scanning electron microscope. properties determined in static test. Microhardness measurements also performed. Based analysis...

Crystal lattice rotations developed in copper single crystals with (110)[1-1-2](Br), (110)[001](G), (112)[11-1](C), and S (346)[63-5](S) orientations have been examined to assess the role of an impact loading on twinning, deformation banding shear banding. The single-crystalline specimens were channel-die compressed logarithmic strains 0.9 a strain rate 4.7 × 105 s−1. microstructures characterised using scanning (SEM) transmission (TEM) electron microscope, whereas backscattered diffraction...

In the realm of modern architecture, demand for materials that combine strength, durability, and aesthetic flexibility is ever-growing. Addressing this need, paper presents a study on innovative use aluminum extrudates in construction. Focusing AA6005 alloy, which known its excellent balance corrosion resistance, weldability, research delves into development an extrusion process yields thin-walled, lightweight, yet high-strength structural components. Using FEM simulations, new extrudate...

The extrusion of hollow profiles from hard-deformable AlZnMg alloys by using porthole dies encounters great technological difficulties in practice. High force accompanies the process, which is caused high deformation resistance and friction conditions. As a result thermo-mechanical loads affecting die, significant loss dimensional accuracy extruded can be observed. different projects for Ø50 × 2 mm tubes 7021 alloy were numerically calculated then tested industrial conditions press 25 MN...

The paper is devoted to highlighting the potential application of quantitative imaging technique through results associated with work hardening, strain rate and heat generated during elastic plastic deformation. aim research presented in this article determine relationship between deformation uniaxial tensile test samples made 1-mm-thick nickel-based superalloys their change temperature yield stress Taylor–Quinney coefficient were determined. material was sheets three grades Inconel alloys:...

Single Point Incremental Forming (SPIF) is an unconventional forming process that suitable for prototype production and small lot due to the economical tooling cost, short lead time, ability create symmetrical asymmetrical complex geometries without use of expensive dies. This article presents effect step size Δz a tool made 145Cr6 steel on formability maximum angle, mechanical properties, hardness, surface roughness, microstructure texture bimetallic Al/Cu sheets. Experiments were conducted...

The paper presents the numerical and experimental results of research aimed at determining influence hardness in range 50-90 Shore A layered tools made elastomeric materials on possibility forming Inconel 625 nickel-based alloy sheets. stamping die 90MnCrV8 steel (hardness 60HRC) was designed for embosses drawpieces, ensuring various stress states cross-section formed element. principle operating based Guerin method. Finite element-based modelling process configurations polyurethane inserts...

Abstract This work presents a study of recent advances in the understanding mechanism controlling chemical composition and microstructure reaction regions Ta/304L steel composite with without Cu interlayers fabricated by explosive welding, both during formation post-processing annealing. The solidified melt (SMR) were characterized using scanning transmission electron microscopy while phase X-ray synchrotron radiation. It was found that SMR plates are composed ultra-fine-grained varied...

Nickel superalloys as Inconel ® are materials widely used in the aerospace industry among others for diffusers, combustion chamber, shells of gas generators and other. In most cases, manufacturing process those parts metal strips, produced by conventional plastic processing techniques, thus hot or cold rolling. An alternative technology allowing components jet engines is technique 3D printing (additive manufacturing), all Direct Metal Laser Sintering, which one latest achievement field...

The paper presents the research results of mechanical properties and microstructure material in initial state parts made from nickel superalloy Inconel ® 718 rotary forming process with laser heating. In first step was carried out basic chemical composition, properties, hardness sheet state. Then metal sheet, industrial conditions, axisymmetric flow shear Parts were subjected to detailed studies focused on analysis changes relation based tests strength plastic hardness, microstructural...

Abstract The paper presents the results of corrosion resistance heat treated aluminized steel strips. Products coated by Al-10Si alloy are used among others in a manufacturing process welded pipes as elements car exhaust systems, working high temperatures and different environments (eg. wet, salty). strips tubes performance requirements applied to stability, thickness roughness Al-Si coating, adhesion resistance. Tubes systems wide range exposed effects many aggressive factors, such salty...

This article presents a study on the effect of strain rate, specimen orientation, and plastic value distribution temperature dog-bone 1 mm-thick specimens during their deformation in uniaxial tensile tests. Full-field image correlation infrared thermography techniques were used. A titanium-stabilised austenitic 321 stainless steel was used as test materials. The for tests cut along sheet metal rolling direction three rates considered: 4 × 10−3 s−1, 8 s−1 16 s−1. It found that increasing rate...

The paper presents the numerical and experimental results of research aimed at determining influence hardness in range 50–90 Shore A layered tools composed elastomeric materials on possibility forming Inconel 625 nickel-based alloy sheets. stamping die 90MnCrV8 steel (hardness 60HRC) was designed for embosses drawpieces, ensuring various stress states cross-section formed element. principle operating based Guerin method. finite-element-based modelling process configurations polyurethane...

This work proposes a research method that is scheme can be universally applied in problems based on the selection of optimal parameters for metal forming processes. For this purpose, statistical data optimisation methods were used. The was analysis shear spinning tests performed industrial conditions. process conducted components made Inconel 625 nickel superalloy. It necessary to select appropriate experimental plan, which, by minimising number trials, allowed one draw conclusions influence...

Abstract The evolution of the microstructure reaction regions in as-welded and annealed states was thoroughly investigated by SEM TEM eleven-layered AZ31/AA1050 composite plates fabricated via a single-shot explosive welding process. With detonation velocities used, only first second interface is wavy, while others are flat. Near all interfaces, local melting rapid solidification processes lead to formation composed phases different chemical compositions structures. Even though 2 equilibrium...

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This article presents the results of research on use modern nondestructive methods such as 3D scanning, thermography and computed tomography (CT) to assess quality multilayer ceramic molds. Tests were performed spherical samples molds in raw state. Samples made molding sands composed quartz molochite powders, alcoholic binder hydrolyzed ethyl silicate (ZKE) an aqueous based colloidal silica. Thickness measurements forms using a scanner. Porosity CT. Additionally, observations mold cooling...

Inconel 625 is a nickel superalloy, characterized by high fatigue strength. The alloy resistant to wide range of corrosive environments, including high-temperature oxidation. For this reason, it an attractive material for the chemical, shipbuilding and aviation industries. designed plastic working. However, significant difficulty appropriate process design, due deformation resistance. In order improve properties alloy, processing at elevated temperatures practiced. work, attempts were made...

The aim of this study is to evaluate the influence roll bonding (RB) process on mechanical properties Al/Cu bimetallic strip specimens. A specially designed test instrument for cyclic bending specimens produced by RB has been proposed. consists repeated pulling a sheet metal through system cylindrical countersamples. Samples cut along and across rolling direction were tested. subjected preliminary microstructural tests using an optical microscope with Nomarski contrast scanning electron...

Abstract The influence of deformation texture on the initial stages recrystallization deformed pure Al single crystals and commercial AA1050 alloy were characterized. To precisely quantify orientation relationship between nuclei simple structures, crystalline samples stable Br(110) [1-1-2] semi-stable S’(234) [20-28 11] orientations, plane strain compressed (PSC) to 40% develop a dominant homogeneous microstructure composed two sets microbands. then lightly annealed reach stage primary...