Abstract Carbon fibre-reinforced polymers (CFRPs) are commonly used in aviation, automotive and renewable energy markets, which constantly growing. Increasing the production of composite parts leads to increased waste a future increase end-of-life components. To improve recyclability CFRPs, new materials that fit with idea circular economy should be as matrix. One such material is commercially available thermoplastic liquid resin, Elium® (Arkema, France). In this work, authors investigated...

The aim of this research was to improve the electrical and mechanical properties carbon-fibre-reinforced polymers (CFRP) based on thermoplastic acrylic resin ELIUM®, by introducing single-walled carbon nanotubes (SWCNTs) into their structure. laminates were fabricated using infusion technique infiltrating fabric with mixture SWCNTs. addition SWCNTs improved conductivity through thickness laminate several times compared without modification. No defects or voids observed in structure...

Ultrafine-grained (UFG) commercially pure (Ti Grade 2) and high-purity 99.99%) titanium can be a good alternative to less biocompatible Ti alloys in many biomedical applications. Their severe plastic deformation may lead substantial increase of strength, but their highly refined microstructure show lower thermal stability which limit range The purpose this study was investigate the effect interstitial elements on UFG 2 99.99% processed by multi-pass cold rolling total thickness reduction...

The paper discusses the formability and ductility, under various strain rates temperatures, of ultrafine grained plates commercial 5754 aluminium alloy processed by a hybrid process combining multi-turn Equal Channel Angular Pressing upset forging. proposed offers simple way to produce UFG sheets that are characterized high at elevated temperatures. It was proven proper selection temperature rate makes it possible obtain elongations in tensile tests exceeding 80%, as well two-fold increase...

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...

Abstract In this study, the effect of rhenium addition (2, 4, and 6 wt pct) building orientation (0 90 deg) on microstructure corrosion resistance Inconel 718 (IN718) alloy processed by selective laser melting (SLM) was investigated. Microstructure characterization showed that as-built IN718-Re alloys consist columnar grains growing parallel to direction ( Z -axis). Each grain characterized a fine columnar/cellular dendritic substructure with Nb- Mo-rich Laves phases MC-type carbides...

In this paper, the corrosion resistance and mechanical properties of 7075 aluminum alloy are studied. The was deformed by hydrostatic extrusion then aged both naturally artificially. Results compared with those coarse-grained material subjected to T6 heat treatment. aim research is find optimal correlation between alloy. To end, static tensile tests subsequent fractography, open circuit potential, potentiodynamic polarization in 0.05 M NaCl were conducted. Obtained results show that a...

This work offers the approach to exploit simple and cost-effective low-temperature annealing treatment simultaneously enhance of hardness, corrosion biological response ultra-fine grained commercially pure titanium (UFG CP-Ti) fabricated by multiple-pass cold rolling technique. Performed investigations revealed that improvement all these characteristics was possible subjecting UFG CP-Ti heat with parameters 250 °C/15 min. Hardening (for about 4.2 %) governed both partial recovery process...

Abstract This paper describes the development and characterisation of bainitic steel for rail applications based on carbide-free, low-alloy steel. The results show that after rolling subsequently cooling, designed carbide-free exhibits better mechanical performance than standard pearlitic is because its fine, microstructure, which consists ferrite retained austenite laths. Microstructural property analysis was carried out using scanning transmission electron microscopy, X-ray diffraction,...

Abstract Two approaches can be taken when designing properties of the native oxide layers formed on Ti-based biomedical materials: (i) changing chemical composition substrate by adding biocompatible, valve alloying elements, and (ii) microstructure substrate—especially its level defectiveness—through large plastic deformation. However, especially in aggressive fluoridated oral environment, it is still unknown what factor more effective terms enhancing layer protectiveness against...

Selective laser melting (SLM) is an additive manufacturing process that enables novel alloy production by combining metals with significantly different physical properties. In this paper, the hot corrosion behavior of Ti–Re alloys fabricated SLM was studied in a mixture Na2SO4 and NaCl salts at 600 °C. The morphology composition products were characterized scanning electron microscopy energy-dispersive X-ray spectroscopy diffraction to understand degradation mechanisms. It has been shown...

Abstract This paper presents the microstructural changes and mechanical properties of carbide-free bainitic steel subjected to various heat treatment processes compares these results with similarly treated ferritic–pearlitic steel. A key feature investigated steel, which is common among others described in literature, that Si content developed was >1 wt.% avoid carbide precipitation retained austenite during transformation. The phase identification before after conditions carried out...

The effect of shear deformation introduced by differential speed rolling (DSR) on the microstructure, texture and mechanical properties Mg-6Sn alloy was investigated. sheets were obtained DSR at ratio between upper lower rolls R = 1, 1.25, 2 3 (R 1 refers to symmetric rolling). microstructural textural changes investigated electron backscattered diffraction (EBSD) XRD, while performance evaluated based tensile tests calculated Lankford parameters. resulted in pronounced grain refinement...

Anodization of titanium alloys allows us to obtain nanotube oxide structures consisting a mixture oxides alloying additives which might extend their scope application and improve surface properties. However, the complex microstructure two-phase α + β Ti presents much greater influence on homogeneity nanotubular layers as compared single α-phase pure titanium. In this work, we analyzed how changes at microstructural level (the amount, size or shape precipitates individual phases) affect...

The aim of this study was to show the effect manufacturing defects in a commercially pure Ti Grade 2 produced by laser beam powder bed fusion (PBF-LB) process on its high-cycle fatigue life. For purpose, performance PBF-LB compared ultrafine-grained (UFG) counterpart processed hydrostatic extrusion exhibiting similar mechanical properties under static tensile. yield strength and UFG 740 783 MPa, respectively. consisted typical columnar prior β grains with an acicular martensite α’...

Abstract The present study is the first attempt to join ultrafine-grained materials by electron beam welding. aim of was check feasibility and effectiveness this type welding for thermally unstable materials. results obtained are high interest, while did cause a decline in mechanical properties, were comparable those using solid-state welding, but with significant advantage narrower fusion- heat-affected zones.

In this work, the comparison of microstructure, texture, and mechanical properties newly developed TZ61 (Mg-6Sn-1Zn) alloy with commercially available AZ61 (Mg-6Al-1Zn) has been presented. Both analyzed Mg alloys were processed by conventional symmetric asymmetric rolling (i.e., Differential Speed Rolling-DSR). The microstructure texture examined EBSD XRD, whereas behavior was investigated uniaxial tensile tests. DSR processing led to more effective grain refinement both sheets. However, a...

Abstract The aim of the current study was to determine fracture toughness different zones in carburized Pyrowear 53 steel using small punch test (SPT) method. Firstly, quenched and tempered processing parameters obtain core materials with varied microstructures toughness. results obtained for material standard tests were then compared SPT results, which allowed determination a formula correlating energy integral, J , from Q integrals standardized compact tension specimens. In next stage, at...