Ji‐Hun Yu
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View article: Linkage between process-induced microstructure and magnetic property of Nd-Fe-B permanent magnets additively manufactured by laser powder bed fusion
Linkage between process-induced microstructure and magnetic property of Nd-Fe-B permanent magnets additively manufactured by laser powder bed fusion Open
View article: Electrostatic Reactivity Control of Polytetrafluoroethylene-Coated Aluminum Powders using Antistatic Agents
Electrostatic Reactivity Control of Polytetrafluoroethylene-Coated Aluminum Powders using Antistatic Agents Open
Aluminum (Al) powders are coated by polytetrafluoroethylene (PTFE), which replaces the naturally formed oxide layer, enhancing thermal oxidation performance via simultaneous exothermic reactions doubling exothermic enthalpy energy compared…
View article: Effect of Support Structure on Residual Stress Distribution in Ti-6Al-4V Alloy Fabricated by Laser Powder Bed Fusion
Effect of Support Structure on Residual Stress Distribution in Ti-6Al-4V Alloy Fabricated by Laser Powder Bed Fusion Open
Ti-6Al-4V alloy is widely utilized in aerospace and medical sectors due to its high specific strength, corrosion resistance, and biocompatibility. However, its low machinability makes it difficult to manufacture complex-shaped products. Ad…
View article: A novel multi-sensor fusion approach for enhanced navigation in autonomous driving
A novel multi-sensor fusion approach for enhanced navigation in autonomous driving Open
View article: Cryogenic tensile behavior of carbon-doped CoCrFeMnNi high-entropy alloys additively manufactured by laser powder bed fusion
Cryogenic tensile behavior of carbon-doped CoCrFeMnNi high-entropy alloys additively manufactured by laser powder bed fusion Open
Cryogenic tensile behaviors of carbon-doped CoCrFeMnNi high-entropy alloy (C-HEA) printed by laser powder bed fusion (LPBF) were systematically explored. The LPBFed C-HEA exhibits excellent cryogenic tensile properties with not only high y…
View article: Cryogenic Tensile Behavior of Ferrous Medium-entropy Alloy Additively Manufactured by Laser Powder Bed Fusion
Cryogenic Tensile Behavior of Ferrous Medium-entropy Alloy Additively Manufactured by Laser Powder Bed Fusion Open
The emergence of ferrous-medium entropy alloys (FeMEAs) with excellent tensile properties represents a potential direction for designing alloys based on metastable engineering. In this study, an FeMEA is successfully fabricated using laser…
View article: Improving Thermoelectric Properties of Cumnsb Alloys Via Strategic Alloying with Magnetic Mnsb and Cu
Improving Thermoelectric Properties of Cumnsb Alloys Via Strategic Alloying with Magnetic Mnsb and Cu Open
View article: Grain Boundaries in Additively Manufactured CoCrFeMnNi High-Entropy Alloys: Interplay of Processing, Structure, Segregation, Phase Decomposition and Diffusion Kinetics
Grain Boundaries in Additively Manufactured CoCrFeMnNi High-Entropy Alloys: Interplay of Processing, Structure, Segregation, Phase Decomposition and Diffusion Kinetics Open
View article: Fine-tuning of mechanical properties of additively manufactured AlSi10Mg alloys by controlling the microstructural heterogeneity
Fine-tuning of mechanical properties of additively manufactured AlSi10Mg alloys by controlling the microstructural heterogeneity Open
Cell structures decorated with Si precipitates are key microstructures that endow AlSi10Mg alloys produced by laser powder bed fusion (LPBF) with excellent mechanical properties. This study investigated the effect of heat treatment on the …
View article: Local composition detouring for defect-free compositionally graded materials in additive manufacturing
Local composition detouring for defect-free compositionally graded materials in additive manufacturing Open
This study investigated cracking phenomena in 316L stainless steel (SS316L) and Inconel 718 (IN718) composition-graded material (CGM) additively manufactured by the direct energy deposition (DED) process. In order to prevent cracking in th…
View article: A Novel Route for Predicting the Cracking of Inoculant-Added Aa7075 Processed Via Laser Powder Bed Fusion
A Novel Route for Predicting the Cracking of Inoculant-Added Aa7075 Processed Via Laser Powder Bed Fusion Open
View article: Mechano-Chemical Coupling, Heterogeneous Segregation and Nano-Precipitation in Additively Manufactured Equatomic COCrFeMnNi High Entropy Alloys
Mechano-Chemical Coupling, Heterogeneous Segregation and Nano-Precipitation in Additively Manufactured Equatomic COCrFeMnNi High Entropy Alloys Open
View article: Laser powder bed fusion for AI assisted digital metal components
Laser powder bed fusion for AI assisted digital metal components Open
This paper proposes a novel method to impart intelligence to metal parts using additive manufacturing. A sensor-embedded metal bracket is prototyped via a metal powder bed fusion process to recognise partial screw loosening or total screw …
View article: Correction to: Selective Laser Melting Process for Sensor Embedding into SUS316L with Heat Dissipative Inner Cavity Design
Correction to: Selective Laser Melting Process for Sensor Embedding into SUS316L with Heat Dissipative Inner Cavity Design Open
View article: Heat Treatment Effect on Physical Properties of Stainless Steel / Inconel Bonded by Directed Energy Deposition
Heat Treatment Effect on Physical Properties of Stainless Steel / Inconel Bonded by Directed Energy Deposition Open
In this study, stainless steel 316L and Inconel 625 alloy powders were additively manufactured by using directed energy deposition process. And heat treatment effect on hardness and microstructures of the bonded stainless steel 316L/Incone…
View article: High-Efficiency Cooling System Using Additive Manufacturing
High-Efficiency Cooling System Using Additive Manufacturing Open
In this study, we propose a cooling structure manufactured using a specialized three-dimensional (3D) printing design method. A cooling performance test system with complex geometry that used a thermoelectric module was manufactured using …
View article: Synergetic enhancement in the reactivity and stability of surface-oxide-free fine Al particles covered with a polytetrafluoroethylene nanolayer
Synergetic enhancement in the reactivity and stability of surface-oxide-free fine Al particles covered with a polytetrafluoroethylene nanolayer Open
Surface oxide (Al 2 O 3 ) of reactive fine aluminum (Al) particles for solid fuels, propellants, and brazing materials often restricted oxidative performance, though the passivation film acts to protect Al particles from exploding. Here, w…
View article: Artificial intelligence for the prediction of tensile properties by using microstructural parameters in high strength steels
Artificial intelligence for the prediction of tensile properties by using microstructural parameters in high strength steels Open
View article: Embedding sensors using selective laser melting for self-cognitive metal parts
Embedding sensors using selective laser melting for self-cognitive metal parts Open
View article: Micro-Texture Analyses of a Cold-Work Tool Steel for Additive Manufacturing
Micro-Texture Analyses of a Cold-Work Tool Steel for Additive Manufacturing Open
Small objects of an alloy tool steel were built by selective laser melting at different scan speeds, and their microstructures were analyzed using electron backscatter diffraction (EBSD). To present an explicit correlation with the local t…
View article: Artificial Intelligence for the Prediction of Tensile Properties by Using Microstructural Parameters in High Strength Steels
Artificial Intelligence for the Prediction of Tensile Properties by Using Microstructural Parameters in High Strength Steels Open
View article: In-situ Deposition of Graphene Oxide Catalyst for Efficient Photoelectrochemical Hydrogen Evolution Reaction Using Atmospheric Plasma
In-situ Deposition of Graphene Oxide Catalyst for Efficient Photoelectrochemical Hydrogen Evolution Reaction Using Atmospheric Plasma Open
The vacuum deposition method requires high energy and temperature. Hydrophobic reduced graphene oxide (rGO) can be obtained by plasma-enhanced chemical vapor deposition under atmospheric pressure, which shows the hydrophobic surface proper…
View article: Superior tensile properties of 1%C-CoCrFeMnNi high-entropy alloy additively manufactured by selective laser melting
Superior tensile properties of 1%C-CoCrFeMnNi high-entropy alloy additively manufactured by selective laser melting Open
CoCrFeMnNi high-entropy alloys containing 1 at% carbon (C-HEAs) were additively manufactured using selective laser melting (SLM). Superior tensile properties of the as-built C-HEA (to previously reported ones) were achieved by utilizing mu…
View article: Dual Speed Laser Re-melting for High Densification in H13 Tool Steel Metal 3D Printing
Dual Speed Laser Re-melting for High Densification in H13 Tool Steel Metal 3D Printing Open
The densification behavior of H13 tool steel powder by dual speed laser scanning strategy have been characterized for selective laser melting process, one of powder bed fusion based metal 3d printing. Under limited given laser power, the l…
View article: Comparison of Nano-Mechanical Behavior between Selective Laser Melted SKD61 and H13 Tool Steels
Comparison of Nano-Mechanical Behavior between Selective Laser Melted SKD61 and H13 Tool Steels Open
Using nanoindentation under various strain rates, the mechanical properties of a laser powder bed fusion (PBF) SKD61 at the 800 mm/s scan speed were investigated and compared to PBF H13. No obvious pile-up due to the ratio of the residual …
View article: Nano-mechanical Behavior of H13 Tool Steel Fabricated by a Selective Laser Melting Method
Nano-mechanical Behavior of H13 Tool Steel Fabricated by a Selective Laser Melting Method Open
Nano-mechanical properties of selective laser melted H13 steel at a scan laser speed of 100 mm/s were investigated using nanoindentation tests. The findings shed light on the interrelationship between the nanoindentation strain rate and ha…
View article: Comparison of Nano-Mechanical Behavior between Selective Laser Melted SKD61 and H13 Tool Steels<strong> </strong>
Comparison of Nano-Mechanical Behavior between Selective Laser Melted SKD61 and H13 Tool Steels<strong> </strong> Open
Using nanoindentation under various strain rates, the mechanical properties of a selective laser melted (SLM) SKD61 at the 800 mm/s scan speed was investigated and compared to SLM H13. No obvious pile-up due to the ratio of the residual de…
View article: Correlation between Microstructure and Mechanical Properties of the Additive Manufactured H13 Tool Steel
Correlation between Microstructure and Mechanical Properties of the Additive Manufactured H13 Tool Steel Open
H13 tool steels are widely used as metallic mold materials due to their high hardness and thermal stability. Recently, many studies are undertaken to satisfy the demands for manufacturing the complex shape of the mold using a 3D printing t…
View article: Evaluation of Strain-Rate Sensitivity of Selective Laser Melted H13 Tool Steel Using Nanoindentation Tests
Evaluation of Strain-Rate Sensitivity of Selective Laser Melted H13 Tool Steel Using Nanoindentation Tests Open
This paper demonstrates the successful printing of H13 tool steel by a selective laser melting (SLM) method at a scan laser speed of 200 mm/s for the best microstructure and mechanical behavior. Specifically, the nanoindentation strain-rat…
View article: Ceramics-bonded Nd-Fe-B-type magnet with high electrical resistivity
Ceramics-bonded Nd-Fe-B-type magnet with high electrical resistivity Open
Ceramics-bonded magnet with remarkably high electrical resistivity was fabricated by hot-pressing the mixture of Nd13.6Fe73.6Co6.6Ga0.6B5.6 alloy melt-spun flakes and dielectric Bi2O3-SiO2-B2O3 ceramics powder with low melting point. Coerc…