Open Access Conference Proceedings

Abstract: In engineering practice, there are cases where it is necessary to design a suitable technology for the production of a small number of pieces of parts to achieve a minimum price of one piece of a manufactured part. The paper describes the development of a low-cost drawing tool for the production of a small number of pieces of cover stampings from 2 mm thick sheet metal from DC04 steel. [..] Read more

Abstract: Forging tools are exposed to cyclically changing thermo-mechanical stress conditions leading to its failure. Damage phenomena on the tool engraving cannot be entirely avoided by hardening the surface, as this leads to a more brittle behaviour and thus to lower ductility of the material, which can intensify the occurring damage effects. [..] Read more

Abstract: Mechanical properties and the deformation behavior of the equal channel angular pressing processed material were investigated by the tensile tests using miniaturized specimens, hardness and by so called penetration tests. The significant increase in yield stress and hardness after equal channel angular pressing was discussed by two strengthening mechanisms. [..] Read more

Abstract: Presented paper reports the effect of the processing route on the microstructure and microhardness in the cold rolled low-carbon sheets processed by dual rolls equal channel extrusion (DRECE). The DRECE process was repeated up to four passes in two processing routes, called routes A and C. [..] Read more

Abstract: Using finite element modelling and mathematical processing, the universal equation is obtained which establishes the dependence of the resistance of a metal to deformation on the conditions of thermoplastic processing of alloyed low pearlite steels. The finite element method is implemented in various software packages, such as Deform-2D / 3D, etc. [..] Read more

Abstract: The paper deals with numerical simulation when optimizing the production of gutter corner for rainwater systems. The deep drawing process has been numerically simulated using Pam Stamp software by ESI Group. [..] Read more

Abstract: Main aim of this paper is to describe the plastic deformation executed by ECAP during low cycle fatigue of steel AISI 316. Among others, main attention was fixed on mechanical properties after this treatment. [..] Read more

Abstract: The purpose of this work is to investigate the structure formation in intermetallic γ-TiAl alloys by using a complex plastic deformation technology under non-stationary temperature conditions with niobium doping. Also in given work, the using of Hall-Patch model, the interrelation of the nanostructured quantities with strength characteristics is considered. [..] Read more

Abstract: The purpose of this work is to examine the structure of the transition zone of multilayer composites of dissimilar metallic materials obtained by the pulse method of metal processing and to establish the mechanism for the material bonding. In this work, a composite material obtained by explosion welding was used as an initial sample. [..] Read more

Abstract: The study is aimed to identify the causes of piston incompatibilities in the friction welding area, as well as to reduce or eliminate the occurrence of non-compliance using quality management tools (Pareto-Lorenz diagram, 5W2H and 5Why method). Diagnostic tests were carried out with visual tests and quality control results were analyzed. [..] Read more

Abstract: The paper deals with the effect of different loading cycle asymmetry and long-term thermal exposure on fatigue crack growth rate in P91 and P92 steels used primarily for components in USC powerplants. Testing was performed using C(T) specimens. [..] Read more

Abstract: The article deals with the production and evaluation of thermal spraying layers using duplex technologies, namely a combination of electric arc spraying (EA) and High-Velocity-Oxy-Fuel (HVOF) flame spraying. The coatings are realized in this way can make a layer thickness of up to several mm. [..] Read more

Abstract: High carbon steel wires are largely used in structural applications such as reinforcement, bridge cables, steel ropes, etc. These applications require safety, reliability and durability, which implies in a constant effort to optimize and control the microstructure. [..] Read more

Abstract: The objective of the present paper is to investigate if the presence and the nature of austenite in 9Ni steel, together with the modification of the matrix induced by heat treatment, change the low cycle fatigue response. The steel was therefore heat-treated so that either a quenched martensitic matrix or a mixture of tempered martensitic with bainitic matrix containing retained or reversed austenite would be obtained, respectively. [..] Read more

Abstract: A quantitative model has been developed to predict the temperature dependence of impact toughness (KCV) for hot rolled plane carbon and HSLA steels with a wide range of chemical composition (wt%): С(0.04-0.21), Mn(0.16-1.96), Si(0.01-0.93), Cr(0.01-0.97), Ni(0.01-0.51), Cu(0.02-0.45), Mo(0.001-0.50), Nb(0.001-0.056), V(0.002-0.09), Ti(0.001-0.08), N(0.003-0.009), S(0.001-0.032), P(0.005-0.025). The transition temperature at 50 % of fibrous fracture (FATT50) is determined in terms of chemical composition and calculated final microstructure parameters. [..] Read more

Abstract: Laser cladding (LC) technology allows produce metal-matrix composites from discrete powder materials. Data analysis shows that use of such technology to obtain composite materials with enhanced functional properties is of heightened economical interest. [..] Read more

Abstract: Nowadays the use of laminated composites in various industries is becoming popular. Unlike single layer materials, laminated materials are characterized as more durable, corrosion resistant, technological materials for the production of parts for various purposes. [..] Read more

Abstract: The resistance spot welding of the Nimonic alloys is a critical technology by manufacturing of components used for nuclear and aeronautical industry, as well as for the chemical and the petro-chemical domain. The mechanical properties and the corrosion resistance can be affected by the heat - mechanical shock caused by the welding cycle. [..] Read more

Abstract: The CORODUR 65 alloy delivered in the form of flux-cored wire electrode was deposited by TIG welding process on the surface of a duplex stainless steel in order to improve the cavitation erosion resistance of the technical components which are working in aggressive environments. Cavitation tests were performed using ultrasonic vibrating equipment that meets the requirements of the ASTM G32 - 2010 standard. [..] Read more

Abstract: Cavity erosion is a complex and localized phenomenon involving mechanical, chemical and metallurgical parameters. The development of new materials depends on understanding the relationship between microstructure and cavity erosion. [..] Read more