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Severe plastic deformation (SPD) is a very attractive research field for metallic materials because it provides new possibilities for manufacturing nanostructured materials in large quantities and allows microstructural design on different hierarchical levels. The papers included in this issue address the following topics: novel SPD processes as well as recent advancements in established processing methods, microstructure evolution and grain refinement in single- and multi-phase alloys as well as composites, strategies to enhance the microstructure stability at elevated temperatures, mechanically driven phase transformations, surface nanostructuring, gradient and multilayered materials, and mechanical and physical properties of SPD-processed materials.

History of engineering & technology --- Mg-3.7Al-1.8Ca-0.4Mn alloy --- Al2Ca phase --- equal channel angular pressing --- refinement --- mechanical properties --- aluminium copper-clad rod --- hardness --- effective electrical conductivity --- severe plastic deformation --- Mg-9Li duplex alloy --- ECAP --- rolling --- high strength --- microstructure --- high pressure torsion extrusion --- gradient structure --- hardness distribution --- tensile properties --- copper --- high pressure torsion --- microstructural characterization --- magnetic properties --- hysteresis --- magneto-resistance --- β titanium alloys --- α phase precipitation --- phase composition --- high energy synchrotron X-ray diffraction --- metastable β-Ti alloys --- powder metallurgy --- cryogenic milling --- spark plasma sintering --- surface mechanical attrition treatment (SMAT) --- ultrasonic shot peening (USP) --- functionally graded materials (FGM) --- titanium niobium alloys --- titanium molybdenum alloys --- human mesenchymal stem cells culture --- cell adhesion --- cell proliferation --- magnesium --- equal-channel angular pressing --- deformation tests --- texture --- schmid factor --- cryogenic temperature --- 304L austenitic stainless steel --- rotating-bending fatigue --- tension-compression fatigue --- TiNi alloy --- thermal cycling --- ultrafine-grained structure --- microstructural and mechanical stability --- Ti-Fe --- high-pressure torsion --- high-temperature XRD --- differential scanning calorimetry --- phase diagram --- CalPhaD --- Mg alloy --- severe plastic deformation (SPD) --- intermetallic precipitates --- vacancy agglomerates --- corrosion --- Mg-3.7Al-1.8Ca-0.4Mn alloy --- Al2Ca phase --- equal channel angular pressing --- refinement --- mechanical properties --- aluminium copper-clad rod --- hardness --- effective electrical conductivity --- severe plastic deformation --- Mg-9Li duplex alloy --- ECAP --- rolling --- high strength --- microstructure --- high pressure torsion extrusion --- gradient structure --- hardness distribution --- tensile properties --- copper --- high pressure torsion --- microstructural characterization --- magnetic properties --- hysteresis --- magneto-resistance --- β titanium alloys --- α phase precipitation --- phase composition --- high energy synchrotron X-ray diffraction --- metastable β-Ti alloys --- powder metallurgy --- cryogenic milling --- spark plasma sintering --- surface mechanical attrition treatment (SMAT) --- ultrasonic shot peening (USP) --- functionally graded materials (FGM) --- titanium niobium alloys --- titanium molybdenum alloys --- human mesenchymal stem cells culture --- cell adhesion --- cell proliferation --- magnesium --- equal-channel angular pressing --- deformation tests --- texture --- schmid factor --- cryogenic temperature --- 304L austenitic stainless steel --- rotating-bending fatigue --- tension-compression fatigue --- TiNi alloy --- thermal cycling --- ultrafine-grained structure --- microstructural and mechanical stability --- Ti-Fe --- high-pressure torsion --- high-temperature XRD --- differential scanning calorimetry --- phase diagram --- CalPhaD --- Mg alloy --- severe plastic deformation (SPD) --- intermetallic precipitates --- vacancy agglomerates --- corrosion

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Severe plastic deformation (SPD) is a very attractive research field for metallic materials because it provides new possibilities for manufacturing nanostructured materials in large quantities and allows microstructural design on different hierarchical levels. The papers included in this issue address the following topics: novel SPD processes as well as recent advancements in established processing methods, microstructure evolution and grain refinement in single- and multi-phase alloys as well as composites, strategies to enhance the microstructure stability at elevated temperatures, mechanically driven phase transformations, surface nanostructuring, gradient and multilayered materials, and mechanical and physical properties of SPD-processed materials.

History of engineering & technology --- Mg-3.7Al-1.8Ca-0.4Mn alloy --- Al2Ca phase --- equal channel angular pressing --- refinement --- mechanical properties --- aluminium copper-clad rod --- hardness --- effective electrical conductivity --- severe plastic deformation --- Mg-9Li duplex alloy --- ECAP --- rolling --- high strength --- microstructure --- high pressure torsion extrusion --- gradient structure --- hardness distribution --- tensile properties --- copper --- high pressure torsion --- microstructural characterization --- magnetic properties --- hysteresis --- magneto-resistance --- β titanium alloys --- α phase precipitation --- phase composition --- high energy synchrotron X-ray diffraction --- metastable β-Ti alloys --- powder metallurgy --- cryogenic milling --- spark plasma sintering --- surface mechanical attrition treatment (SMAT) --- ultrasonic shot peening (USP) --- functionally graded materials (FGM) --- titanium niobium alloys --- titanium molybdenum alloys --- human mesenchymal stem cells culture --- cell adhesion --- cell proliferation --- magnesium --- equal-channel angular pressing --- deformation tests --- texture --- schmid factor --- cryogenic temperature --- 304L austenitic stainless steel --- rotating–bending fatigue --- tension–compression fatigue --- TiNi alloy --- thermal cycling --- ultrafine-grained structure --- microstructural and mechanical stability --- Ti–Fe --- high-pressure torsion --- high-temperature XRD --- differential scanning calorimetry --- phase diagram --- CalPhaD --- Mg alloy --- severe plastic deformation (SPD) --- intermetallic precipitates --- vacancy agglomerates --- corrosion --- n/a --- rotating-bending fatigue --- tension-compression fatigue --- Ti-Fe

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The use of lightweight structures across several industries has become inevitable in today’s world given the ever-rising demand for improved fuel economy and resource efficiency. In the automotive industry, composites, reinforced plastics, and lightweight materials, such as aluminum and magnesium are being adopted by many OEMs at increasing rates to reduce vehicle mass and develop efficient new lightweight designs. Automotive weight reduction with high-strength steel is also witnessing major ongoing efforts to design novel damage-controlled forming processes for a new generation of efficient, lightweight steel components. Although great progress has been made over the past decades in understanding the thermomechanical behavior of these materials, their extensive use as lightweight solutions is still limited due to numerous challenges that play a key role in cost competitiveness. Hence, significant research efforts are still required to fully understand the anisotropic material behavior, failure mechanisms, and, most importantly, the interplay between industrial processing, microstructure development, and the resulting properties. This Special Issue reprint book features concise reports on the current status in the field. The topics discussed herein include areas of manufacturing and processing technologies of materials for lightweight applications, innovative microstructure and process design concepts, and advanced characterization techniques combined with modeling of material’s behavior.

n/a --- microstructure --- Mg-Al-Ba-Ca alloy --- strength --- severe plastic deformation --- hot working --- surface roughness --- high pressure torsion extrusion --- optimization --- fatigue fracture behavior --- magnesium alloys --- de-coring --- formability --- multilayered sheets --- HPDC --- spring-back --- contact heat transfer --- mechanical properties --- bending --- in-die quenching --- equivalent strain --- light metals --- processing --- heat transfer --- damage --- creep aging --- thin-walled profile --- rolling --- aluminum alloy --- transmission line fittings --- ceramic core --- processing map --- automated void recognition --- FEA --- multi-output porthole extrusion --- density --- kinetic analysis --- texture --- non-ferrous alloys --- material characterization --- stress superposition --- hot stamping --- metal flow --- hybrid composite material --- V-bending test --- finite element model --- aluminium alloy --- shear lap test --- Al-Cu-Mg alloy --- characterization

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The Special Issue “Recent Advancements in Metallic Glasses” presents ten original papers, considering both scientific and application issues related to metallic glasses. The papers are devoted to general consideration of the formation and defects of the glassy structure, defect evolution due to heat treatment, deformation behavior upon compression and high-pressure torsion, amorphous-crystalline transformation, hydrogenation behavior, and biomedical applications.

metallic glasses --- defects --- structural relaxation --- heat effects --- shear elasticity --- interstitialcy theory --- mechanical spectroscopy --- mixing enthalpy --- Kohlrausch–Williams–Watts equation --- structural heterogeneity --- metallic glass --- twin roll casting --- GFA --- MicroCT --- hydrogen --- indentation --- pop-in --- plasticity --- nanoglasses --- structure evolution --- properties --- bulk metallic glass --- shear band --- dislocation theory --- scanning white light interferometry --- high-pressure torsion --- severe plastic deformation --- transmitting electron microscopy --- X-ray diffraction --- differential scanning calorimetry --- free volume --- shear modulus --- composite --- amorphous alloy --- nanolaminate --- hardness --- crack resistance --- nanostructure --- HPT deformation --- metastable phases --- n/a --- Kohlrausch-Williams-Watts equation

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This book is a collection of several unique articles on the current state of research on complex concentrated alloys, as well as their compelling future opportunities in wide ranging applications. Complex concentrated alloys consist of multiple principal elements and represent a new paradigm in structural alloy design. They show a range of exceptional properties that are unachievable in conventional alloys, including high strength–ductility combination, resistance to oxidation, corrosion/wear resistance, and excellent high-temperature properties. The research articles, reviews, and perspectives are intended to provide a wholistic view of this multidisciplinary subject of interest to scientists and engineers.

History of engineering & technology --- high-entropy alloy --- laser cladding --- microstructure --- slurry erosion --- Nb/SiC composite material --- hot pressing sintering --- mechanical property --- corrosion --- surface degradation --- wear --- high entropy alloys --- complex concentrated alloys --- potentiodynamic polarization --- erosion-corrosion --- slurry-erosion --- oxidation wear --- highly wear resistant coatings --- multi-principal element alloys --- computational models --- first-principles calculations --- molecular dynamics --- phases --- properties --- dislocation nucleation --- activation volume --- activation energy --- nano-indentation --- high/medium entropy alloys --- spark plasma sintering --- pressure --- mechanical properties --- high-entropy --- high pressure --- high pressure torsion --- diamond anvil cells --- CoCrFeMnNi high entropy alloys --- additive manufacturing --- corrosion behavior --- non-equilibrium microstructure --- micro-pores --- high-entropy alloys --- corrosion resistance --- wear resistance --- serrated flow --- thermal coarsening --- actuators --- phase transformation --- nanoporous metals and alloys --- AlCoCrFeNi2.1 --- CCA --- HEA --- aging --- precipitates --- tribology --- creep --- stress exponent --- data analysis --- high-entropy alloy --- laser cladding --- microstructure --- slurry erosion --- Nb/SiC composite material --- hot pressing sintering --- mechanical property --- corrosion --- surface degradation --- wear --- high entropy alloys --- complex concentrated alloys --- potentiodynamic polarization --- erosion-corrosion --- slurry-erosion --- oxidation wear --- highly wear resistant coatings --- multi-principal element alloys --- computational models --- first-principles calculations --- molecular dynamics --- phases --- properties --- dislocation nucleation --- activation volume --- activation energy --- nano-indentation --- high/medium entropy alloys --- spark plasma sintering --- pressure --- mechanical properties --- high-entropy --- high pressure --- high pressure torsion --- diamond anvil cells --- CoCrFeMnNi high entropy alloys --- additive manufacturing --- corrosion behavior --- non-equilibrium microstructure --- micro-pores --- high-entropy alloys --- corrosion resistance --- wear resistance --- serrated flow --- thermal coarsening --- actuators --- phase transformation --- nanoporous metals and alloys --- AlCoCrFeNi2.1 --- CCA --- HEA --- aging --- precipitates --- tribology --- creep --- stress exponent --- data analysis