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In recent years, the industry has started to use parts printed by powder-based laser additive manufacturing (LAM) when precision and good mechanical properties are required. Applications can be found in the aerospace, automotive, and medical sectors. However, the powder materials available are often inadequate for contemporary processing tasks, and often generate process instabilities as well as porosities and defects in the resulting parts. This Special Issue, “New Frontiers in Materials Design for Laser Additive Manufacturing”, focuses on advances in material design and the development of laser additive manufacturing. Of particular interest are original papers dealing with metal and polymer powders for laser powder bed fusion or directed energy deposition. In this Special Issue, we are especially interested in answering the following questions: How can laser process parameters and material properties be adapted to the LAM process via the matrix modification (e.g., alloying, doping, compounding) of powders? How can powder properties like flowability, wetting, porosity, or (heterogeneous) nucleation be adapted to the LAM process via the surface modification of powders? How may calorimetry, high-speed videography, pyrometry, and online spectroscopy, as well as modeling, contribute to understanding dynamics of melting and recrystallization, in addition to the lateral distribution of the thermal process window?

Technology: general issues --- Chemical engineering --- powder bed fusion --- magnesium --- process development --- additive manufacturing --- PBF-LB/M --- tool steel (1.2709) --- nanocomposite --- microstructure --- mechanical properties --- laser powder bed fusion --- selective laser melting --- oxide dispersion strengthened steel --- phase-field model --- finite element simulation --- nanoparticle interaction --- pure copper --- short wavelength laser system --- green laser --- eddy-current method --- electrical conductivity --- polyamide 12 --- nanocomposites --- nanoparticles --- dispersion --- LB-PBF --- additively manufactured parts --- aluminum alloys --- intermetallics --- thermal exposure --- n/a --- aluminium alloys --- hot cracking --- rapid solidification --- differential fast scanning calorimetry --- undercooling --- grain size --- crack density

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Nowadays, 25% of materials used are metals, and this ratio is not expected to decrease, as metals are indispensable for many applications due to their high resistance to temperature. The only handicap of metals is their relatively higher density with respect to composites. Lightening of metallic structures is possible in three ways: (i) employing low density metals, (ii) developing new ones, and (iii) increasing the yield strength of existing high-density metals. The Laboratory of Excellence of the Lorraine University in France, called ‘Design of Alloy Metals for Low-Mass Structures’, is working to lighten metal via metallurgical means. Two leading research laboratories compose this Laboratory of Excellence within the Lorraine University: the Laboratory of Microstructure Studies and Mechanics of Materials (LEM3), based in Metz, and the Jean Lamour Institute (IJL), located in Nancy. In this Special Issue, they report on some of their major progress in the different fields of metallurgy and mechanics of metallic materials. There are articles in the three major fields of metallurgy: physical, chemical, and mechanical metallurgy. All scales are covered, from atomistic studies to real-scale metallic structures.

History of engineering & technology --- Pd–10Au alloy --- shear compression --- texture --- grain boundary sliding --- TiAl alloys --- dislocation --- twinning --- nanoindentation --- ECCI --- disconnection density --- displacement discontinuity --- crack nucleation --- crack opening displacement --- digital image correlation --- Al-Cu-Li alloys --- titanium aluminides --- grain refinement --- solidification --- inoculation --- TWIP steel --- ECAP --- deformation twinning --- VPSC --- simulation --- industrial ingot --- steel --- dendritic grain size --- titanium --- strain hardening --- anisotropy --- strain heterogeneity --- acoustic emission --- statistical analysis --- collective dislocation dynamics --- Q&amp --- P --- transition carbide --- precipitation --- HEXRD --- TEM --- grain size --- crystal plasticity --- elasto-visco-plastic self-consistent (EVPSC) scheme --- hardening --- dislocation density --- ironmaking --- direct reduction --- iron ore --- DRI --- shaft furnace --- mathematical model --- CO2 emissions --- lattice structures --- porous materials --- 3D surface maps --- finite element --- fatigue --- plasticity --- steel ladle --- non-metallic inclusions --- aggregation --- lateral extrusion ratio --- Finite Element (FE) simulation --- analytical modelling --- plastic flow machining --- back pressure --- polycrystalline β-Ti --- elastic anisotropy --- elastic/plastic incompatibilities --- elasto-viscoplastic self-consistent scheme (EVPSC) --- slip activity --- microsegregation --- gas tungsten arc welding --- directional solidification --- FM52 filler metal --- ERNiCrFe-7 --- tip undercooling --- rolling --- asymmetric ratio --- thickness reduction per pass --- magnesium powders --- HPT consolidation --- microstructure --- hardness --- H-activation --- high entropy alloy --- crystallographic texture --- groove rolling --- elastic properties --- non-Schmid effects --- Taylor multiscale scheme --- localized necking --- bifurcation theory --- excess nitrogen --- clusters precipitation --- Fe–Si and Fe–Cr nitrided alloys --- APT and TEM characterization --- metal matrix composite --- in situ X-ray diffraction --- internal stresses --- phase transformation --- nickel-based single crystal superalloy --- lattice mismatch --- in situ experiments --- X-ray diffractometry --- creep --- dislocations --- diffraction --- fast Fourier transform (FFT)-based method --- discrete green operator --- voxelization artifacts --- sub-voxel method --- simulated diffraction peaks --- scattered intensity --- shape memory alloys --- architected cellular material --- numerical homogenization --- multiscale finite element method --- bainite --- martensite --- isothermal treatment --- mechanical properties --- austenite reconstruction --- variant --- magnesium --- self consistent methods --- modeling --- heterogeneous kinetics --- heat and mass transfer --- Pd–10Au alloy --- shear compression --- texture --- grain boundary sliding --- TiAl alloys --- dislocation --- twinning --- nanoindentation --- ECCI --- disconnection density --- displacement discontinuity --- crack nucleation --- crack opening displacement --- digital image correlation --- Al-Cu-Li alloys --- titanium aluminides --- grain refinement --- solidification --- inoculation --- TWIP steel --- ECAP --- deformation twinning --- VPSC --- simulation --- industrial ingot --- steel --- dendritic grain size --- titanium --- strain hardening --- anisotropy --- strain heterogeneity --- acoustic emission --- statistical analysis --- collective dislocation dynamics --- Q&amp --- P --- transition carbide --- precipitation --- HEXRD --- TEM --- grain size --- crystal plasticity --- elasto-visco-plastic self-consistent (EVPSC) scheme --- hardening --- dislocation density --- ironmaking --- direct reduction --- iron ore --- DRI --- shaft furnace --- mathematical model --- CO2 emissions --- lattice structures --- porous materials --- 3D surface maps --- finite element --- fatigue --- plasticity --- steel ladle --- non-metallic inclusions --- aggregation --- lateral extrusion ratio --- Finite Element (FE) simulation --- analytical modelling --- plastic flow machining --- back pressure --- polycrystalline β-Ti --- elastic anisotropy --- elastic/plastic incompatibilities --- elasto-viscoplastic self-consistent scheme (EVPSC) --- slip activity --- microsegregation --- gas tungsten arc welding --- directional solidification --- FM52 filler metal --- ERNiCrFe-7 --- tip undercooling --- rolling --- asymmetric ratio --- thickness reduction per pass --- magnesium powders --- HPT consolidation --- microstructure --- hardness --- H-activation --- high entropy alloy --- crystallographic texture --- groove rolling --- elastic properties --- non-Schmid effects --- Taylor multiscale scheme --- localized necking --- bifurcation theory --- excess nitrogen --- clusters precipitation --- Fe–Si and Fe–Cr nitrided alloys --- APT and TEM characterization --- metal matrix composite --- in situ X-ray diffraction --- internal stresses --- phase transformation --- nickel-based single crystal superalloy --- lattice mismatch --- in situ experiments --- X-ray diffractometry --- creep --- dislocations --- diffraction --- fast Fourier transform (FFT)-based method --- discrete green operator --- voxelization artifacts --- sub-voxel method --- simulated diffraction peaks --- scattered intensity --- shape memory alloys --- architected cellular material --- numerical homogenization --- multiscale finite element method --- bainite --- martensite --- isothermal treatment --- mechanical properties --- austenite reconstruction --- variant --- magnesium --- self consistent methods --- modeling --- heterogeneous kinetics --- heat and mass transfer

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Nowadays, 25% of materials used are metals, and this ratio is not expected to decrease, as metals are indispensable for many applications due to their high resistance to temperature. The only handicap of metals is their relatively higher density with respect to composites. Lightening of metallic structures is possible in three ways: (i) employing low density metals, (ii) developing new ones, and (iii) increasing the yield strength of existing high-density metals. The Laboratory of Excellence of the Lorraine University in France, called ‘Design of Alloy Metals for Low-Mass Structures’, is working to lighten metal via metallurgical means. Two leading research laboratories compose this Laboratory of Excellence within the Lorraine University: the Laboratory of Microstructure Studies and Mechanics of Materials (LEM3), based in Metz, and the Jean Lamour Institute (IJL), located in Nancy. In this Special Issue, they report on some of their major progress in the different fields of metallurgy and mechanics of metallic materials. There are articles in the three major fields of metallurgy: physical, chemical, and mechanical metallurgy. All scales are covered, from atomistic studies to real-scale metallic structures.

Pd–10Au alloy --- shear compression --- texture --- grain boundary sliding --- TiAl alloys --- dislocation --- twinning --- nanoindentation --- ECCI --- disconnection density --- displacement discontinuity --- crack nucleation --- crack opening displacement --- digital image correlation --- Al-Cu-Li alloys --- titanium aluminides --- grain refinement --- solidification --- inoculation --- TWIP steel --- ECAP --- deformation twinning --- VPSC --- simulation --- industrial ingot --- steel --- dendritic grain size --- titanium --- strain hardening --- anisotropy --- strain heterogeneity --- acoustic emission --- statistical analysis --- collective dislocation dynamics --- Q&amp --- P --- transition carbide --- precipitation --- HEXRD --- TEM --- grain size --- crystal plasticity --- elasto-visco-plastic self-consistent (EVPSC) scheme --- hardening --- dislocation density --- ironmaking --- direct reduction --- iron ore --- DRI --- shaft furnace --- mathematical model --- CO2 emissions --- lattice structures --- porous materials --- 3D surface maps --- finite element --- fatigue --- plasticity --- steel ladle --- non-metallic inclusions --- aggregation --- lateral extrusion ratio --- Finite Element (FE) simulation --- analytical modelling --- plastic flow machining --- back pressure --- polycrystalline β-Ti --- elastic anisotropy --- elastic/plastic incompatibilities --- elasto-viscoplastic self-consistent scheme (EVPSC) --- slip activity --- microsegregation --- gas tungsten arc welding --- directional solidification --- FM52 filler metal --- ERNiCrFe-7 --- tip undercooling --- rolling --- asymmetric ratio --- thickness reduction per pass --- magnesium powders --- HPT consolidation --- microstructure --- hardness --- H-activation --- high entropy alloy --- crystallographic texture --- groove rolling --- elastic properties --- non-Schmid effects --- Taylor multiscale scheme --- localized necking --- bifurcation theory --- excess nitrogen --- clusters precipitation --- Fe–Si and Fe–Cr nitrided alloys --- APT and TEM characterization --- metal matrix composite --- in situ X-ray diffraction --- internal stresses --- phase transformation --- nickel-based single crystal superalloy --- lattice mismatch --- in situ experiments --- X-ray diffractometry --- creep --- dislocations --- diffraction --- fast Fourier transform (FFT)-based method --- discrete green operator --- voxelization artifacts --- sub-voxel method --- simulated diffraction peaks --- scattered intensity --- shape memory alloys --- architected cellular material --- numerical homogenization --- multiscale finite element method --- bainite --- martensite --- isothermal treatment --- mechanical properties --- austenite reconstruction --- variant --- magnesium --- self consistent methods --- modeling --- heterogeneous kinetics --- heat and mass transfer