Article
Chemistry, Physical
Abdulaziz Kurdi, Thamer Tabbakh, Animesh Kumar Basak
Summary: Additive manufacturing (AM) of stainless steel is challenging due to the oxidation of alloying elements during fabrication. In this study, stainless steel 316L specimens were produced using powder laser bed fusion (P-LBF) AM process. Electron microscopy and micro-/nano-indentation techniques were used to examine the microstructure and mechanical properties. The P-LBF-processed alloy exhibited slightly smaller grain size compared to the wrought counterpart. Despite the small size refinement, the L-PBF alloy showed significantly increased shear stress and hardness.
Article
Engineering, Manufacturing
Cole Britt, Colt J. Montgomery, Michael J. Brand, Zi-Kui Liu, John S. Carpenter, Allison M. Beese
Summary: This study investigates the effects of input processing parameters and strut thickness on the microstructure and properties of laser powder bed fusion additively manufactured stainless steel 316L lattice-emulating structures. The results show that grain size and morphology are influenced by epitaxial growth and weld pool morphology, with different strut thicknesses leading to significant differences in hardness values.
ADDITIVE MANUFACTURING
(2021)
Article
Nanoscience & Nanotechnology
Shahriar Afkhami, Vahid Javaheri, Kalle Lipiainen, Mohsen Amraei, Edris Dabiri, Timo Bjork
Summary: This study investigates the fatigue performance of additively manufactured steel CX under uniaxial high cycle loading. The results show that surface quality is the most influential parameter that affects the fatigue behavior of the material, while heat treatment has little influence on the fatigue performance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
V. B. Vukkum, Furkan Ozdemir, Steven Storck, R. K. Gupta
Summary: This study investigates the influence of additives on the microstructure and corrosion performance of 316 L stainless steel using modified feedstock and laser-powder bed fusion technique.
Article
Nanoscience & Nanotechnology
Yuan Tian, Kanwal Chadha, Clodualdo Aranas
Summary: The study fabricated AISI 420 stainless steel samples using the laser powder bed fusion process, and evaluated the microstructure, texture, and mechanical properties in both as-printed and heat-treated conditions. The results showed that heat treatment resulted in improved tensile and yield strength, although there was a decrease in elongation. Additionally, the toughness was significantly higher after heat treatment.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Haitao Zhu, Allan Rennie, Ruifeng Li, Yingtao Tian
Summary: This study investigates the influence of high current densities on the electrochemical polishing of 316L stainless steel. The results indicate that polishing in a non-aqueous electrolyte at the transpassive region is feasible, and a two-step electrochemical process is proposed to enhance the polishing effect.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Manufacturing
Jaime Berez, Christopher Saldana
Summary: This study investigated how stainless steel powder feedstocks are affected by prior LPBF processes and how these effects impact subsequent builds. It was found that powder characteristics evolve with exposure to LPBF processes, particularly in terms of powder size distribution and bulk flow, but have no significant effects on tensile properties. The reliability modeling methods proved to be effective tools for modeling fatigue variability in LPBF manufactured components, showing that fatigue life remains invariant with changes in powder condition.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Nanoscience & Nanotechnology
Feipeng Yang, Jianying Wang, Tao Wen, Lei Zhang, Xixi Dong, Dong Qiu, Hailin Yang, Shouxun Ji
Summary: The AM aluminium alloy Al5Mg3Zn2Si developed in this work exhibits high strength, ductility, and excellent mechanical properties without the addition of costly alloying elements. With an optimized relative density and refined microstructure, it has great potential for automotive and aerospace applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Optics
M. J. Javidi, S. M. Hosseini, F. Khodabakhshi, M. Mohammadi, L. Orovcik, V. Nagy Trembosova, S. Nagy, M. Nosko
Summary: This study investigates the mechanical properties and microstructure of additively manufactured 316L stainless steels reinforced with Al2O3 nanoparticles. Optimal laser power, scan speed, hatch space, and layer thickness were determined using Taguchi analysis. The energy density was found to be critical in controlling the integrity and cracking behavior of the structures. Characterization of the microstructure and mechanical properties revealed refined grain structure and improved hardness due to the incorporation and uniform distribution of alumina nanoparticles. These nanoparticles directly strengthened the stainless steel matrix and influenced the solidification mechanisms and microstructural features.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Spencer Jeffs, Rory Douglas, Will Beard, Mark Coleman, Jack Adams, Thomas Jones, Dave Poole, Robert Lancaster
Summary: Duplex stainless steels (DSS) are superior alloys that design engineers are exploring for industrial components. This research focuses on the mechanical and microstructural characterization of DSS manufactured by additive manufacturing processes, and evaluates its performance under different temperature conditions.
MATERIALS CHARACTERIZATION
(2022)
Article
Engineering, Manufacturing
Hahn Choo, Logan P. White, Xianghui Xiao, Clifton C. Sluss, Derek Morin, Elena Garlea
Summary: The study investigated the tensile plastic deformation and fracture behavior of a laser powder bed fusion processed 316L stainless steel alloy using high-resolution synchrotron x-ray computed microtomography. Different cases were studied to analyze the effects of type, density, and orientation of defects in printed samples on plastic deformation and failure modes. The results revealed different failure modes in specimens with different defect orientations, indicating the importance of defect characteristics in determining material behavior.
ADDITIVE MANUFACTURING
(2021)
Article
Automation & Control Systems
Chung-Wei Cheng, Teoh Boon How, Yi-Hsien Liu, Ching-Hua Hung
Summary: It was found that UAC was more likely to refine the molten pools compared to CC. The number of sub-grain boundaries near the compressive surface was significantly increased by UAC. The UAC-processed specimens showed an increased hardness of 7% compared with the CC sample.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Mahyar Khorasani, Amir Hossein Ghasemi, Umar Shafique Awan, Sarat Singamneni, Guy Littlefair, Ehsan Farabi, Martin Leary, Ian Gibson, Jithin Kozhuthala Veetil, Bernard Rolfe
Summary: This research focuses on how process parameters in Laser-Based Powder Bed Fusion (LB-PBF) affect meltpool temperature and subsequently microstructure and tensile properties. The study demonstrates that meltpool temperature plays a key role in the evolution of crystallographic features and microstructural characteristics in 316L stainless steel, both during manufacturing and post-manufacturing heat treatment.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Kazuhisa Sato, Shunya Takagi, Satoshi Ichikawa, Takuya Ishimoto, Takayoshi Nakano
Summary: Using transmission electron microscopy and energy-dispersive x-ray spectroscopy, we investigated the microstructure and solute segregation in the melt pool boundary of orientation-controlled 316L austenitic stainless steel produced by laser powder bed fusion. The solidification cellular microstructures were visualized by solute segregation, and Mn-Si-O inclusions were observed along the lamellar boundaries and dislocation cell walls. The widening of cellular spacing at the bottom of the melt pool boundary was attributed to the decrease in cooling rate.
Article
Engineering, Manufacturing
Amir Hadadzadeh, Babak Shalchi Amirkhiz, Brian Langelier, Jian Li, Mohsen Mohammadi
Summary: The study investigates the microstructural consistency in a laser powder bed fusion (L-PBF) AlSi10Mg material, finding that repeated thermal cycles affect the characteristics of precipitates and the chemistry of the matrix, while not significantly impacting the grain and cell structures.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Le Zhou, Frank Kellogg, Clara Hofmeister, Anit Giri, Kyu Cho, Yongho Sohn
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2015)
Article
Materials Science, Multidisciplinary
Brandon McWilliams, Jian Yu, Frank Kellogg, Steven Kilczewski
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2017)
Article
Materials Science, Multidisciplinary
Frank Kellogg, Brandon McWilliams, Kyu Cho
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2016)
Article
Materials Science, Multidisciplinary
Frank Kellogg, Brandon McWilliams, Jennifer Sietins, Anit Giri, Kyu Cho
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2017)
Article
Materials Science, Multidisciplinary
Brandon McWilliams, Jian Yu, Frank Kellogg
JOURNAL OF MATERIALS SCIENCE
(2018)
Article
Materials Science, Ceramics
Frank Kellogg, Michael Kornecki, Selva Vennila Raju, Brandon McWilliams, Raymond Brennan
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2019)
Article
Nanoscience & Nanotechnology
Mohammad Jahedi, Brandon A. McWilliams, Franklin R. Kellogg, Irene J. Beyerlein, Marko Knezevic
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Materials Science, Multidisciplinary
Clara Hofmeister, Le Zhou, Frank Kellogg, Anit Giri, Kyu Cho, Yongho Sohn
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Sebastian Osswald, Adrian Gurga, Franklyn Kellogg, Kyu Cho, Gleb Yushin, Yury Gogotsi
DIAMOND AND RELATED MATERIALS
(2007)