Jan Čapek
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View article: Solidification pathway induced microstructural differences in austenitic stainless steels produced by L-PBF
Solidification pathway induced microstructural differences in austenitic stainless steels produced by L-PBF Open
This study examines the influence of small compositional variations on the microstructure of 304L stainless steel produced by Laser Powder Bed Fusion (L-PBF). Despite identical processing parameters, N-atomized powder forms textured, colum…
View article: Phase formation and texture evolution in 316L-CuCrZr multi-material structures fabricated by laser powder bed fusion
Phase formation and texture evolution in 316L-CuCrZr multi-material structures fabricated by laser powder bed fusion Open
View article: Corrigendum to “Tribological behavior and biocompatibility of novel nickel-free stainless steel manufactured via laser powder bed fusion for biomedical applications” [Mater. Des. 242 (2024) 113013]
Corrigendum to “Tribological behavior and biocompatibility of novel nickel-free stainless steel manufactured via laser powder bed fusion for biomedical applications” [Mater. Des. 242 (2024) 113013] Open
View article: Investigation of the residual stresses and strains, microstructure and mechanical properties of stainless steel multipass welds produced using dual wire-tungsten inert gas process
Investigation of the residual stresses and strains, microstructure and mechanical properties of stainless steel multipass welds produced using dual wire-tungsten inert gas process Open
View article: Texture analysis implementation at the neutron strain diffractometer POLDI
Texture analysis implementation at the neutron strain diffractometer POLDI Open
View article: Exploring grain-resolved strain tensors and non-uniform lattice deformations with Laue 3DNDT
Exploring grain-resolved strain tensors and non-uniform lattice deformations with Laue 3DNDT Open
Oligocrystalline and polycrystalline materials often display intricate grain-resolved deformation behaviours due to grain interactions, size effects, defects, and crystalline anisotropy. Gaining a deep understanding of grain deformation me…
View article: Strain and texture characterization of steel-copper multi-material obtained by laser powder-bed fusion using neutron imaging
Strain and texture characterization of steel-copper multi-material obtained by laser powder-bed fusion using neutron imaging Open
View article: Effect of precipitates on martensite formation and shape memory effect of FeMnSi-based shape memory alloys fabricated by laser powder bed fusion
Effect of precipitates on martensite formation and shape memory effect of FeMnSi-based shape memory alloys fabricated by laser powder bed fusion Open
The initial and evolving microstructure during the tensile test of two Fe-17Mn-5Si-10Cr-4Ni shape memory alloys, with and without V, C and fabricated by laser powder bed fusion are investigated and compared via electron backscattered diffr…
View article: Strain-induced martensitic transformations in tailored microstructures by L-PBF: In situ characterization via advanced neutron imaging
Strain-induced martensitic transformations in tailored microstructures by L-PBF: In situ characterization via advanced neutron imaging Open
The possibility of controlling the microstructure in laser powder bed fusion (L-PBF) by locally changing the processing parameters, opens the possibility of building complex structures with tailored microstructures, leading to the developm…
View article: Achieving high strength and ductility in Inconel 718: tailoring grain structure through micron-sized carbide additives in PBF-LB/M additive manufacturing
Achieving high strength and ductility in Inconel 718: tailoring grain structure through micron-sized carbide additives in PBF-LB/M additive manufacturing Open
Few attempts have been made so far to develop modifiers for in situ use in Inconel 718 PBF-LB/M fabrication. Reports show an increase in tensile strength compared to unmodified counterparts. However, significant ductility reduction is obse…
View article: Corrosion behavior of laser powder bed fusion manufactured nickel-free stainless steels in high-temperature water
Corrosion behavior of laser powder bed fusion manufactured nickel-free stainless steels in high-temperature water Open
The paper presents a comprehensive investigation of electrochemical behavior of laser powder bed fusion (PBF-LB/M) nickel-free stainless steels in high-temperature water. The PBF-LB/M nickel-free steels processed with various laser paramet…
View article: Exploring crystallographic texture manipulation in stainless steels via laser powder bed fusion: insights from neutron diffraction and machine learning
Exploring crystallographic texture manipulation in stainless steels via laser powder bed fusion: insights from neutron diffraction and machine learning Open
Laser powder bed fusion of metals (PBF-LB/M) is a pivotal additive manufacturing technique that enables the production of intricate components. In addition to enabling the production of complex shapes, it allows for a high degree of freedo…
View article: Tribological behavior and biocompatibility of novel Nickel-Free stainless steel manufactured via laser powder bed fusion for biomedical applications
Tribological behavior and biocompatibility of novel Nickel-Free stainless steel manufactured via laser powder bed fusion for biomedical applications Open
Due to the risk of releasing carcinogenic nickel ions from conventional 316L stainless steel under a corrosive human body environment, a new variant of steel termed nickel-free stainless steel (NiFSS) has been investigated. The present stu…
View article: Exploring Grain-Resolved Strain Tensors and Non-Uniform Lattice Deformations with Laue 3DNDT
Exploring Grain-Resolved Strain Tensors and Non-Uniform Lattice Deformations with Laue 3DNDT Open
View article: Texture Analysis Implementation at the Neutron Strain Diffractometer Poldi
Texture Analysis Implementation at the Neutron Strain Diffractometer Poldi Open
View article: Strain-Induced Martensitic Transformations in Tailored Microstructures by L-Pbf: In Situ Characterization Via Advanced Neutron Imaging
Strain-Induced Martensitic Transformations in Tailored Microstructures by L-Pbf: In Situ Characterization Via Advanced Neutron Imaging Open
View article: Tribological Behavior and Biocompatibility of Novel Nickel-Free Stainless Steel Manufactured Via Laser Powder Bed Fusion for Biomedical Applications
Tribological Behavior and Biocompatibility of Novel Nickel-Free Stainless Steel Manufactured Via Laser Powder Bed Fusion for Biomedical Applications Open
View article: Effect of Precipitates on Martensite Formation and Shape Memory Effect of Femnsi-Based Shape Memory Alloys Fabricated by Laser Powder Bed Fusion
Effect of Precipitates on Martensite Formation and Shape Memory Effect of Femnsi-Based Shape Memory Alloys Fabricated by Laser Powder Bed Fusion Open
View article: Strain-Induced Martensitic Transformations in Tailored Microstructures by L-Pbf: In Situ Characterization Via Advanced Neutron Imaging
Strain-Induced Martensitic Transformations in Tailored Microstructures by L-Pbf: In Situ Characterization Via Advanced Neutron Imaging Open
View article: Site-specifically tailored microstructures with enhanced strength and hardening through laser powder bed fusion
Site-specifically tailored microstructures with enhanced strength and hardening through laser powder bed fusion Open
View article: The FALCON double-detector Laue diffractometer add-on for grain mapping at POLDI
The FALCON double-detector Laue diffractometer add-on for grain mapping at POLDI Open
Laue 3D neutron diffraction tomography (Laue 3DNDT) is a novel tomographic approach that enables non-destructive resolution of the 3D microstructure of polycrystalline materials, utilizing a high-intensity white beam of neutrons, resulting…
View article: Multi-directional neutron dark-field imaging with single absorption grating
Multi-directional neutron dark-field imaging with single absorption grating Open
Neutron dark-field imaging is a powerful technique for investigating the microstructural properties of materials through high-resolution full-field mapping of small-angle scattering. However, conventional neutron dark-field imaging utilizi…
View article: Bragg edge imaging characterization of multi-material laser powder-bed fusion specimens
Bragg edge imaging characterization of multi-material laser powder-bed fusion specimens Open
Multi-material laser powder-bed fusion (M2LPBF) is a novel additive manufacturing approach that makes it possible to print different materials along the built direction and within a single layer of a component. At the interface between the…
View article: Texture-based residual stress analysis of laser powder bed fused Inconel 718 parts
Texture-based residual stress analysis of laser powder bed fused Inconel 718 parts Open
Although layer-based additive manufacturing methods such as laser powder bed fusion (PBF-LB) offer an immense geometrical freedom in design, they are typically subject to a build-up of internal stress ( i.e. thermal stress) during manufact…
View article: Shape memory and mechanical properties of a Fe-Mn-Si-based shape memory alloy: Effect of crystallographic texture generated during additive manufacturing
Shape memory and mechanical properties of a Fe-Mn-Si-based shape memory alloy: Effect of crystallographic texture generated during additive manufacturing Open
The fcc-γ → hcp-ε → bcc-α' martensitic transformation of a Fe-Mn-Si-based shape memory alloy fabricated by laser powder bed fusion (LPBF) is studied for the first time by in-situ neutron diffraction, in-situ high-resolution electron backsc…
View article: Validating texture and lattice strain evolution models via in-situ neutron diffraction and shear tests
Validating texture and lattice strain evolution models via in-situ neutron diffraction and shear tests Open
Validating micromechanical models under different loadings is challenging due to limited availability of experimental setups that can probe complex stress states. In this work, we perform in situ neutron diffraction experiments du…
View article: Shape Memory and Mechanical Properties of a Fe-Mn-Si-Based Shape Memory Alloy: Effect of Crystallographic Texture Inherited by Additive Manufacturing
Shape Memory and Mechanical Properties of a Fe-Mn-Si-Based Shape Memory Alloy: Effect of Crystallographic Texture Inherited by Additive Manufacturing Open
View article: Wire and arc additive manufacturing of 316L stainless steel/Inconel 625 functionally graded material: development and characterization
Wire and arc additive manufacturing of 316L stainless steel/Inconel 625 functionally graded material: development and characterization Open
Funding Information: TAR, AM, FF, TGS, and JPO acknowledge Fundação para a Ciência e a Tecnologia (FCT–MCTES) for its financial support via the project UID/00667/2020 (UNIDEMI). JPO acknowledges the funding of CENIMAT/i3N by national funds…
View article: Understanding the impact of texture on the micromechanical anisotropy of laser powder bed fused Inconel 718
Understanding the impact of texture on the micromechanical anisotropy of laser powder bed fused Inconel 718 Open
View article: Influence of laser powder bed fusion scanning pattern on residual stress and microstructure of alloy 718
Influence of laser powder bed fusion scanning pattern on residual stress and microstructure of alloy 718 Open
A comprehensive investigation is undertaken on the effect of laser scanning pattern on the microstructure of cylindrical samples made of Alloy 718 processed by Laser Powder Bed Fusion. It is observed that the common alternate direction sca…