Abstract Invar, also known as FeNi36, is a material of great interest due to its unique properties, which makes it an excellent alternative for sectors such tooling in aeronautics and aerospace. Its manufacture by means wire arc additive manufacturing (WAAM) technology could extend use. This paper aims evaluate the comparison two most widespread WAAM technologies: plasma welding (PAW) gas metal...

Due to the optimistic outcomes of research on high-entropy alloys, new designs these alloys are being encouraged. We studied CoCrFeMoNi alloy and doped with Zr. In order choose best electrical equivalent circuit for prediction behavior at various potentials in artificial seawater, electrochemical impedance spectroscopy (EIS) measurements were conducted samples without Zr-doped CoCrFeMoNi. At po...

The nucleation and growth of Cd 1~x Zn x Te crystals in a multi-zone vertical Bridgman growth furnace have been observed and measured using in situ eddy current sensor techniques. A two-coil eddy current sensor measured coil impedance changes for multifrequency which were then interpreted using an electromagnetic "nite element analysis. The sensor was used to characterize the initial melting of...

Asymmetric incremental sheet forming (AISF) could significantly reduce costs incurred by the fabrication of complex industrial components with a minimal environmental impact. The AISF experiments were carried out on commercially pure titanium (Ti-Gr2), Timetal (15-3-3-3) alloy, and Ti-6Al-4V (Ti-Gr5) alloy. A special testing geometry was used to characterize the titanium alloys properties from ...

In this paper, we examine prospects for the manufacture of patient-specific biomedical implants replacing hard tissues (bone), particularly knee and hip stems and large bone (femoral) intramedullary rods, using additive manufacturing (AM) by electron beam melting (EBM). Of particular interest is the fabrication of complex functional (biocompatible) mesh arrays. Mesh elements or unit cells can b...

In this investigation, a laser cladding process with a powder feeding was used to deposit stainless steel 410L (high strength, excellent resistance to abrasion and corrosion, and great laser compatibility) onto railhead (higher strength, heat treated hypereutectoid rail grade manufactured in accordance with the requirements of European standard EN 13674 Part 1 for R400HT grade), to investigate ...

This paper presents the study of a sword found in Talayot del Serral de ses Abelles (Puigpunyent, Mallorca). The remarkable state conservation this and fact that it is only item its kind documented 21st century an archaeological excavation make exceptional find. main purpose research to characterise technological significance. analytical information presented (14C, XRF, ICP-MS, radiography, met...

Residual stresses (RS) in pipes welded by a fully automated friction welding process, called FRIEX, are investigated using the contour method (CM) and X-ray diffraction (XRD). Samples were produced self-developed equipment, which is based on interaction between consumable intermediate rotary ring two stationary pipe sections, varying loading rate applied during of API 5L B with an X65 ring. Mec...

This paper presents the development of welding technology for P460NL2 steel with a thickness 30 mm. The was developed purpose producing housings in which device PIG-Pipeline Inspection/Intervention Gauge intended testing and maintenance pipelines is installed. In this particular case, were cleaning transport acid-aggressive gases. material selected accordance NACE MR0175/ISO 15156 ASME BPVC IKS...

*Member of ASM International arburizing has been a popular method for obtaining a unique balance of properties in steels for many years. Steels with low carbon contents are characterized by good toughness and good ductility, but low strength and low wear resistance. By locally increasing the carbon content at the surface, followed by heat treatment to produce a very high hardness in this layer ...