Article
Metallurgy & Metallurgical Engineering
Ri-Ming Wu, Yi Xu, Kui-Cen Li, Wei Li
Summary: A series of experiments were conducted to study the role of frozen concentration gradient of manganese (Mn) element in stability of retained austenite (RA) with multiple-stage martensite transformation, by performing intercritical annealing (IA) temperatures before quenching and partitioning (Q & P) treatment. The morphology and distribution of RA were observed, and it was found that the volume fraction and stability of metastable RA were significantly affected by IA temperature. Thermodynamic and kinetic analysis were conducted to explain the evolution of RA during the IAQP treatment, and the predicted levels of RA matched well with the measurements. The inhomogeneous partitioning of Mn during IA and the incomplete partitioning of carbon during Q & P were found to regulate the Q & P microstructure.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Jiyun Kang, Narayan S. Pottore, Hong Zhu, C. Cem Tasan
Summary: Understanding the micromechanical consequences of TRIP-assisted steels is challenging due to the presence of multiple phase constituents and difficulties in resolving the transformation of sub-micron scale retained austenite. This study investigates the neighborhood effects on the micromechanical behaviors of multi-phase TRIP steel, revealing that retained austenite, bainite, and tempered martensite clusters behave similarly and undergo early transformation. Additionally, a neighborhood-induced effect is observed in ferrite grains, where lateral contraction is inhibited when neighbored by hard martensite, leading to local plane strain tension.
Article
Materials Science, Multidisciplinary
Sachin Kumar, Shiv Brat Singh
Summary: A low-carbon low-alloy steel with multiphase microstructures was studied after two-step quenching and partitioning (Q&P) treatments. The tensile properties of Q&P samples were investigated, with a focus on the influence of bainitic-ferrite. The yield strength of the Q&P steel was calculated by considering various strengthening mechanisms, and the contribution of different microstructural components was analyzed.
MATERIALS CHARACTERIZATION
(2023)
Article
Environmental Sciences
Bryan R. Bandli, Brittani D. McNamee
Summary: Mineral specimens are mixtures of various mineral species, and each species has a range of quantifiable values and qualitative characteristics. Incompletely characterized specimens may introduce significant variables in experiments. Mineral characterization should include bulk properties as well as microanalytical and crystallographic characterization. Understanding the composition and interactions of minerals is critical for evaluating experimental results.
ENVIRONMENTAL RESEARCH
(2023)
Article
Optics
Wei Zhang, Wu Tao, Shanglu Yang
Summary: Quenching and partitioning (Q&P) steel is a critical material in the automotive industry due to its excellent mechanical properties and potential for weight reduction. However, poor weldability has been a bottleneck for its application. This study successfully welded Q&P steel using a newly-developed remote laser spot welding (R-LSW) process, revealing key stages and failure mechanisms during the welding process.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Kyu-Sik Kim, Young-Kyun Kim, Kee-Ahn Lee
Summary: Carbon-bearing martensitic steels are of great interest in aerospace and defense applications due to their ultra-high strength and reasonable ductility. This study investigates the microstructure evolution during laser powder bed fusion (LPBF) and identifies the effects of rapid solidification, solid-state transformation, and in-situ heat treatments.
ADDITIVE MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Man Liu, Jun Wang, Qi Zhang, Haijiang Hu, Guang Xu
Summary: The study reveals that the optimal mechanical properties of Q&P steels do not necessarily correspond to the highest volume fraction of retained austenite. Quenching at the fine martensite start temperature can achieve a Q&P steel with better elongation at the expense of slightly lower yield strength and tensile strength.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Markus Kuehbach, Priyanshu Bajaj, Huan Zhao, Murat H. Celik, Eric A. Jaegle, Baptiste Gault
Summary: The development of strong-scaling computational tools for high-throughput methods with open-source code has transformed computational materials science communities, but there are still gaps in supporting experimental techniques such as Atom Probe Tomography (APT). Data science tools are necessary for extracting chemo-structural spatial correlations, as post-processing for high-end analysis techniques like APT still relies on proprietary software with limited performance and transparency.
NPJ COMPUTATIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Xuyang Zhou, Ankit Gupta, Garritt J. Tucker, Gregory B. Thompson
Summary: By controlling the annealing temperature and chemical composition, two distinct nanocrystalline stability mechanisms can be activated in the same Ni(P) alloy, including thermodynamic stabilization and Zener pinning. Each mechanism has its own advantages and disadvantages, with the thermodynamic mechanism yielding a more refined and stable grain size, while the Zener pinning mechanism provides higher pinning strength.
Article
Nanoscience & Nanotechnology
Lixin Meng, Wenqi Li, Quanxin Shi, Hongkui Guo, Wei Liang, Huihu Lu
Summary: The study showed that the Q&P process and intercritical annealing treatment had different effects on the microstructure and properties of AISI 430 stainless steel samples. Q&P treatment improved the strength of samples and optimized ductility by adjusting parameters. The diffusion rate of carbon atoms and the proportion of retained austenite were influenced by the partitioning temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ramadan N. Elshaer, Mohamed K. El-Fawakhry, Ahmed I. Z. Farahat
Summary: The effects of quenching after martensitic finish (QAM(f)) and quenching & partitioning (Q&P) on microstructure evolution and mechanical properties of low and medium carbon hot rolled steels were investigated. While QAM(f) process increased uniform elongation and ultimate tensile strength (UTS) in low carbon steel, Q&P process reduced uniform elongation but significantly increased UTS in medium carbon steel. Both processes showed changes in strain hardening instability zones compared to the hot-rolled process, with Q&P process greatly decreasing the instability zone in medium carbon steel.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Kewen Dong, Congying Lu, Wentao Zhou, Derek O. Northwood, Cheng Liu
Summary: The study developed a new quenching and partitioning process for unalloyed ductile iron, revealing the significant influence of multiphase microstructure on material properties. The content and stability of retained austenite were found to play a crucial role in both strength and elongation.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Metallurgy & Metallurgical Engineering
Xiaohong Chu, Weijian Chen, Jinhai Liu, Yinkui Pan, Hang Sun, Zhengzhi Zhao
Summary: This study investigates the microstructures and mechanical properties of low-carbon microalloyed quenching and partitioning (Q-P) steels. The results show that increasing the quenching temperature leads to an increase in the volume fraction of fresh martensite and a decrease in the volume fraction of tempered martensite. The size of the precipitates tends to increase, while the fraction of the precipitates initially decreases and then increases. Additionally, the yield strength decreases, the tensile strength increases, and the elongation first increases and then decreases with the increase in quenching temperature. The main strengthening mechanism of the Q-P steel is attributed to martensite, while retained austenite greatly influences the plasticity but contributes less to the yield strength. The precipitation strengthening values first decrease and then increase with the increase in quenching temperature.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Omkar Tikhe, Pravin Doiphode, Unissa Nichul, Rajkumar Singh, Vijay Hiwarkar
Summary: This study aims to achieve ultra-high strengths in AISI 4340 steel through quench and partitioning (QP) heat treatment processes. The microstructure and mechanical properties of the advanced QP process are compared with conventional processes like quenching and tempering (QT) and austempering. Microstructural investigations were conducted using optical microscopy, scanning electron microscopy, and electron backscattered diffraction, while tensile testing and hardness measurement were also performed. The QP process demonstrated superior mechanical properties, including exceptional ultimate tensile strength (1802 MPa) and elongation of 12.67%, with higher hardness compared to other processes. The microstructure in the QP process was reformed to fine-grained austenite within the inter-lath positions of martensite, which played an important role in achieving these properties.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Microbiology
Adam Kawalek, Krzysztof Glabski, Aneta Agnieszka Bartosik, Dominika Wozniak, Magdalena Kusiak, Jan Gawor, Karolina Zuchniewicz, Grazyna Jagura-Burdzy
Summary: This study investigated the interactions of Pseudomonas aeruginosa ParB with other proteins and found that the interaction between ParB and ParA is crucial for chromosome segregation. It also revealed the interactions between ParB and other DNA-binding proteins, metabolic enzymes, and NTPases. These findings suggest an important regulatory role of ParB in the chromosome partitioning system of P. aeruginosa.
MICROBIOLOGY SPECTRUM
(2023)
Review
Materials Science, Multidisciplinary
Matthias Militzer, Christopher Hutchinson, Hatem Zurob, Goro Miyamoto
Summary: This review critically analyzes the different approaches to model the austenite-ferrite transformation at different length scales, and reviews both semi-empirical and fundamental models, with a focus on polygonal ferrite formation in low and medium carbon steels, as well as the formation of ferrite with more complex morphologies.
INTERNATIONAL MATERIALS REVIEWS
(2023)
Article
Nanoscience & Nanotechnology
A. Sierra-Soraluce, G. Li, M. J. Santofimia, J. M. Molina-Aldareguia, A. Smith, M. Muratori, I. Sabirov
Summary: This article investigates the effect of chemistry and heat treatment parameters on the microstructure and properties of Q&P treated martensitic stainless steels. It is demonstrated that these steels show a good combination of enhanced strength and sufficient tensile ductility, with the ability of the martensitic matrix to accumulate plastic deformation playing an important role. The relationship between the Q&P process, microstructure, and properties is discussed.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Yong-Jie Zhang, Shao-Wen Young, Katherine P. Rice, Mitsutaka Sato, Goro Miyamoto, Tadashi Furuhara, Tadakatsu Ohkubo, Kazuhiro Hono
Summary: The clustering behaviors of solutes in Fe-1.0mass%Cr-0.3mass%N tempered martensite were compared using three atom probe instruments, LEAP 4000 HR, 5000 XR, and 5000 XS. The microstructural features of nanoclusters were measured under the same conditions, and statistical analysis on the Cr atoms' distribution and cluster size was performed on the reconstructed datasets. The results showed that LEAP 5000 XR had a superior capability in detecting Cr nanoclusters in tempered martensite, while the high level of background in the spectrum measured by LEAP 5000 XS limited its application in solute nanocluster detection.
MICROSCOPY AND MICROANALYSIS
(2023)
Article
Nanoscience & Nanotechnology
Haokai Dong, Yongjie Zhang, Goro Miyamoto, Masahiro Inomoto, Weiwen Zhang, Lehua Liu, Hao Chen, Tadashi Furuhara
Summary: This study investigates the segregation behaviors of niobium at the migrating ferrite/austenite interface with ledge structure. It is found that, for the incoherent interface, niobium atoms segregate at the less mobile terrace. The experimental measurements are well explained by theoretical calculations based on solute drag theory.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Tadashi Furuhara, Yongjie Zhang, Mitsutaka Sato, Goro Miyamoto, Masanori Enoki, Hiroshi Ohtani, Tokuteru Uesugi, Hiroshi Numakura
Summary: This research reveals the method of controlling nanoscale dispersion of alloy carbides/nitrides in high-strength steels and emphasizes the importance of interstitial sublattice engineering for the strengthening of alloyed steels.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Amke Lescur, Erich Stergar, Jun Lim, Stijn Hertele, Roumen H. Petrov
Summary: Austenitic stainless steels, such as AISI 316L, are widely used in nuclear reactors and their development and characterization is crucial for ensuring structural integrity. The 3D-DIC technique was successfully used to characterize the behavior of multi-pass welds and base materials, providing accurate local strain calculations. The difference in dynamic strain aging effect between the base and weld materials was identified, with the weld materials showing discontinuous type A PLC bands. This technique allows for a better understanding of the local and global behavior of materials.
Article
Materials Science, Multidisciplinary
H. J. Breukelman, M. J. M. Hermans, M. J. Santofimia, J. Hidalgo
Summary: Localized laser treatments can create complex austenite/martensite mesostructures in Fe-Ni-C steel, leading to enhanced mechanical performance. Controlling the phase topology is crucial for modifying the properties of these structures, requiring a deep understanding of the effect of laser processing parameters. This study thoroughly investigates the microstructure evolution under exceptional temperature gradients and heating rates. The findings suggest that the formation of austenite and its recrystallization were influenced by the laser parameters, allowing for a smooth strength transition from austenite to martensite and potentially improving material mechanical properties.
MATERIALS & DESIGN
(2023)
Article
Nanoscience & Nanotechnology
Alexandros Banis, Andrea Gomez, Vitaliy Bliznuk, Aniruddha Dutta, Ilchat Sabirov, Roumen H. Petrov
Summary: This study investigates the microstructure evolution of a high-strength low-density steel under different aging conditions. The formation and growth of an ordered face-centered cubic L12 phase called x-carbide are characterized qualitatively and quantitatively. The optimal aging condition is determined to achieve a good combination of strength and ductility. Increasing the aging temperature and time leads to the formation of intergranular x-carbides that compromise the hardness and strength of the steel.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Adam Skowronek, Adam Grajcar, Carlos Garcia-Mateo, Jose A. Jimenez, Roumen H. Petrov
Summary: The present study explores the possibility of using continuous annealing approach in Al-alloyed 5Mn steel to optimize the superior mechanical properties in medium-Mn. The microstructural changes as a function of time were followed by dilatometric studies at 680 oC with different soaking times, and thoroughly characterized using various techniques. It was observed that with increasing soaking times, the volume fraction of retained austenite gradually increases, but at the cost of its stability. Mechanical tests results showed a decrease in yield stress, tensile strength and hardness with increasing intercritical annealing soaking time.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ksenija Nikolic, Jelle De Wispelaere, Gopalakrishnan Ravi, Stijn Hertele, Tom Depover, Kim Verbeken, Roumen H. Petrov
Summary: Damage in bearings is closely related to microstructural alterations, known as white etching areas (WEAs) and white etching cracks (WECs). Non-metallic inclusions, such as manganese sulfides and aluminum oxides, are common in bearing steels. This study classifies 280 non-metallic inclusions according to various criteria and finds that the chemical composition is of secondary importance in damage initiation. The observations suggest that the state of non-metallic inclusion plays a crucial role in initiating rolling contact fatigue damage.
Article
Multidisciplinary Sciences
H. J. Breukelman, M. J. Santofimia, J. Hidalgo
Summary: This work presents a thermal model that uses constitutive equations and a dataset to predict temperature fields and heating rates during localized laser treatments on a Fe-C-Ni alloy. The model takes into account transient material properties and the coupling between temperature and microstructure, with a focus on the phase dependence of thermal parameters and phase change hysteresis. The model accurately predicts temperature fields that match the experimental microstructures of the laser-affected zones. This model can be applied to other materials with solid-state transformations caused by laser treatments.
Article
Materials Science, Multidisciplinary
Yulin Xie, Goro Miyamoto, Tadashi Furuhara
Summary: This study investigates the dependence of Cr-N cluster formation in the austenite phase on Cr concentration in the Fe-35Ni and Fe-35Ni-30Cr alloys. The nanostructures of gamma N were characterized using transmission electron microscopy and three-dimensional atom probe, revealing variations in nanosized Cr-N clustering. Computational thermodynamics of chemical driving force, strain energy, and modulation wavelength for coherent spinodal were performed, and the results were consistent with observed nanostructure evolution. Furthermore, increasing Ni content in the alloys promotes spinodal decomposition.
Article
Materials Science, Multidisciplinary
J. Abraham Mathews, H. Farahani, J. Sietsmaa, R. H. Petrov, M. G. Mecozzi, M. J. Santofimia
Summary: The influence of carbon concentration variations on pearlite formation in a case-carburized steel is studied. The microstructure consists of carburized case, transition region, and core. Different types of pearlite are observed in the carburized case region, while only M23C6 carbide is observed in the transition region. Pearlite is absent in the core region which is dominated by martensite and pro-eutectoid ferrite. Various factors such as carbon concentration and solute drag effect are considered to explain these observations.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Fei Sun, Toshio Ogawa, Yoshitaka Adachi, Kazuhisa Sato, Shunya Takagi, Goro Miyamoto, Asuka Suzuki, Akinori Yamanaka, Nobuo Nakada, Takuya Ishimoto, Takayoshi Nakano, Yuichiro Koizumi
Summary: Metal additive manufacturing allows for the production of complex geometric structures with high accuracy, overcoming the limitations of traditional manufacturing methods. Laser powder bed fusion, a common additive manufacturing process, poses challenges in understanding the nano-scale microstructure-process relationship. In this study, advanced scanning transmission electron microscopy was used to reveal novel nanoscale structural features in 316L stainless steel produced by laser powder bed fusion. The findings demonstrate the confinement of slender columnar grains to the centerline of the melt pool, and the growth of columnar cell structures along orthogonal directions at the side branching of the melt pool. Novel nano-scaled modulated structures were observed in dislocation cells parallel to the laser scan direction, resulting from elastic and effective strain fields. This study provides important insights for fabricating high-performance materials through controlled additive manufacturing.
MATERIALS TRANSACTIONS
(2023)
Article
Metallurgy & Metallurgical Engineering
Kaneharu Okuda, Kazuhiro Yamamitsu, Xiao Xu, Goro Miyamoto
Summary: The change in precipitates during cold rolling of Nb-added interstitial-free (IF) steel was studied. The dissolved Nb and C increased with the rolling reduction ratio. Cold rolling changed the size distribution of NbC, reducing the amount of coarse and fine precipitates. The collapse of structure near precipitate surface and heavier deformation of finer precipitates resulted in the solid solution content, as determined by electrochemical analysis.
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN
(2023)
Article
Nanoscience & Nanotechnology
Jie Zhang, Xiaoyang Chen, MingJian Ding, Jiaqiang Chen, Ping Yu
Summary: This study enhances the compositional inhomogeneity of relaxor ferroelectric thin films to improve their dielectric temperature stability. The prepared films exhibit a relatively high dielectric constant and a very low variation ratio of dielectric constant over a wide temperature range.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xiaoyu Chen, Ranran Zhang, Hao Zou, Ling Li, Qiancheng Zhu, Wenming Zhang
Summary: Polyaniline-manganese dioxide composites exhibit high conductivity, long discharge platform, and stable circulation, and the specific capacity is increased by providing additional H+ ions to participate in the reaction.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xutao Huang, Yinping Chen, Jianjun Wang, Gang Lu, Wenxin Wang, Zan Yao, Sixin Zhao, Yujie Liu, Qian Li
Summary: This study aims to establish a novel approach to better understand and predict the behavior of materials with multi-scale lamellar microstructures. High-resolution reconstruction and collaborative characterization methods are used to accurately represent the microstructure. The mechanical properties of pearlite are investigated using crystal plasticity simulation and in-situ scanning electron microscopy tensile testing. The results validate the reliability of the novel strategy.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Cheng Chen, Fanchao Meng, Jun Song
Summary: This study systematically investigated the unfaulting mechanism of single-layer interstitial dislocation loops in irradiated L12-Ni3Al. The unfaulting routes of the loops were uncovered and the symmetry breaking during the unfaulting processes was further elucidated. A continuum model was formulated to analyze the energetics of the loops and predict the unfaulting threshold.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Darshan Bamney, Laurent Capolungo
Summary: This work investigates the formation of adjoining twin pairs (ATPs) at grain boundaries (GBs) in hexagonal close-packed (hcp) metals, focusing on the co-nucleation (CN) of pairs of deformation twins. A continuum defect mechanics model is proposed to study the energetic feasibility of CN of ATPs resulting from GB dislocation dissociation. The model reveals that CN is preferred over the nucleation of a single twin variant for low misorientation angle GBs. Further analysis considering GB character and twin system alignment suggests that CN events could be responsible for ATP formation even at low m' values.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Bing Han, Zhengqian Fu, Guoxiang Zhao, Xuefeng Chen, Genshui Wang, Fangfang Xu
Summary: This study investigates the behavior of electric-field induced antiferroelectric to ferroelectric (AFE-FE) phase transition and reveals the evolution of atomic displacement ordering as the cause for the transition behavior changing from sharp to diffuse. The novel semi-ordered configuration results from the competing interaction between long-range displacement modulation and compositional inhomogeneity, which leads to a diffuse AFE-FE transition while maintaining the switching field.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Akib Jabed, Golden Kumar
Summary: This study demonstrates that cryogenic rejuvenation promotes homogeneous-like flow and increases ductility in metallic glass samples. Conversely, annealing has the opposite effect, resulting in a smoother fracture surface.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xin Ji, Yan Chong, Satoshi Emura, Koichi Tsuchiya
Summary: A heterogeneous microstructure in Ti-15Mo-3Al alloy with heterogeneous distributions of Mo element and omega(iso) precipitates has achieved a four-fold increase in tensile ductility without a loss of tensile strength, by blocking the propagation of dislocation channels and preventing the formation of micro-cracks.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Amit Samanta, Prasanna Balaprakash, Sylvie Aubry, Brian K. Lin
Summary: This study proposes a combined large-scale first principles approach with machine learning and materials informatics to quickly explore the chemistry-composition space of advanced high strength steels (AHSS). The distribution of aluminum and manganese atoms in iron is systematically explored using first principles calculations to investigate low stacking fault energy configurations. The use of an automated machine learning tool, DeepHyper, speeds up the computational process. The study provides insights into the distribution of aluminum and manganese atoms in systems containing stacking faults and their effects on the equilibrium distribution.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Guowei Zhou, Yuanzhe Hu, Zizheng Cao, Myoung Gyu Lee, Dayong Li
Summary: In this work, a physics-constrained neural network is used to predict grain-level responses in FCC material by incorporating crystal plasticity theory. The key feature, shear strain rate of slip system, is identified based on crystal plasticity and incorporated into the loss function as physical constitutive equations. The introduction of physics constraints accelerates the convergence of the neural network model and improves prediction accuracy, especially for small-scale datasets. Transfer learning is performed to capture complex in-plane deformation of crystals with any initial orientations, including cyclic loading and arbitrary non-monotonic loading.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Pengfei Yang, Qichang Li, Zhongying Wang, Yuxiao Gao, Wei Jin, Weiping Xiao, Lei Wang, Fusheng Liu, Zexing Wu
Summary: In this study, the HER performance of Ru-based catalysts is significantly improved through the dual-doping strategy. The obtained catalyst exhibits excellent performance in alkaline freshwater and alkaline seawater, and can be stably operated in a self-assembled overall water splitting electrolyzer.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ilias Bikmukhametov, Garritt J. Tucker, Gregory B. Thompson
Summary: Depositing a Ni-1at. % P film can facilitate the formation of multiple quintuple twin junctions, resulting in a five-fold twin structure and a pentagonal pyramid surface topology. The ability to control material structures offers opportunities for creating novel surface topologies, which can be used as arrays of field emitters or textured surfaces.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Zening Yang, Weiwei Sun, Zhengyu Sun, Mutian Zhang, Jin Yu, Yubin Wen
Summary: Multicomponent oxides (MCOs) have wide applications and accurately predicting their thermal expansion remains challenging. This study introduces an innovative attention-based deep learning model, which achieves improved performance by using two self-attention modules and demonstrates adaptability and interpretability.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ze Liu, Cai Chen, Yuanxun Zhou, Lanting Zhang, Hong Wang
Summary: This study attempts to address the gap in cooling rates between thin film deposition and bulk metallic glass (BMG) casting by correlating the glass-forming range (GFR) determined from combinatorial materials chips (CMCs) with the glass-forming ability (GFA) of BMG. The results show that the full-width at half maximum (FWHM) of the first sharp diffraction peak (FSDP) is a good indicator of BMG GFA, and strong positive correlations between FWHM and the critical casting diameter (Dmax) are observed in various BMG systems. Furthermore, the Pearson correlation coefficients suggest possible similarities in the GFA natures of certain BMG pairs.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Mike Schneider, Jean-Philippe Couzinie, Amin Shalabi, Farhad Ibrahimkhel, Alberto Ferrari, Fritz Koermann, Guillaume Laplanche
Summary: This work aims to predict the microstructure of recrystallized medium and high-entropy alloys, particularly the density and thickness of annealing twins. Through experiments and simulations, a database is provided for twin boundary engineering in alloy development. The results also support existing theories and empirical relationships.
SCRIPTA MATERIALIA
(2024)
