Article
Nanoscience & Nanotechnology
Masayoshi Kumagai, Koichi Akita, Masatoshi Kuroda, Stefanus Harjo
Summary: The study found that the dislocation density of austenitic stainless steel increased with the number of plastic deformation cycles, but began to decrease after a certain number of cycles. The changes in different types of dislocations during cyclic loading significantly affected the crystal structure and flow stress.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Jolan Bestautte, Szilvia Kalacska, Denis Bechet, Zacharie Obadia, Frederic Christien
Summary: Slow strain rate tests on hydrogen-containing specimens of PH13-8Mo maraging stainless steel revealed H-assisted subcritical quasi-cleavage cracking, which accelerated material failure. Fractographic analysis showed that quasi-cleavage consisted of flat brittle areas and rougher areas. Electron backscatter diffraction (EBSD) testing on a secondary subcritically grown crack revealed significant crystal lattice rotation and consequential plastic deformation concentrated between the main crack tip and the cracks located ahead of it. Quasi-cleavage consisted of {100} cleavage cracks connected by ductile ridges, suggesting a discontinuous mechanism involving the re-initiation of new cleavage cracks ahead of the main crack tip.
Article
Chemistry, Physical
L. Y. Mao, Z. A. Luo, C. Huang, X. M. Zhang
Summary: In this study, the susceptibility to hydrogen embrittlement in HR183 steel and 316L steel was investigated. It was found that despite the lower nickel content, HR183 steel had stronger austenite stability due to the inhibition of martensitic transformation by the addition of manganese and nitrogen. Furthermore, the diffusion of hydrogen was delayed in HR183 steel due to the interstitial solution of nitrogen atoms and the uniform dislocation slips, resulting in a slower permeation and a thinner brittle fracture layer compared to 316L steel. The hydrogen embrittlement susceptibility of HR183 steel was 3.4 times lower than that of 316L steel, attributed to the multiple directions of slip in HR183 steel suppressing strain localization and delaying the adverse effects caused by hydrogen-enhanced mechanisms.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Masayoshi Kumagai, Masatoshi Kuroda, Takashi Matsuno, Stefanus Harjo, Koichi Akita
Summary: This study investigated the stress response of austenitic stainless steel using neutron diffraction and found that there is stress sharing between austenite and martensite. The actual stress in the martensite is about half of the assumed stress and the phase stress in the austenite, and the martensite contains a large compressive residual stress.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Qian Yan, Luchun Yan, Xiaolu Pang, Kewei Gao
Summary: This study investigated the influence of Cu precipitations on hydrogen trapping capability and hydrogen embrittlement (HE) in aged martensitic stainless steel. The results showed a significant decrease in the hydrogen diffusion coefficient and a substantial increase in the hydrogen content in specimens containing Cu precipitations. The specimens with peak-aged (1 h) Cu precipitations exhibited the highest HE susceptibility, as a result of abundant hydrogen trapped by coherent Cu precipitations with the matrix and escaped during the tensile process.
Article
Materials Science, Multidisciplinary
Yeonggeun Cho, Hyung-Jun Cho, Sung-Joon Kim
Summary: The effects of C and N on hydrogen embrittlement (HE) were investigated. C and N increased tensile strength through solid solution hardening and high-density dislocation accumulation, with C being more effective than N in further strengthening through active TWIP effect. The lattice expansion caused by C and N reduced hydrogen diffusivity and depth of the hydrogen-affected zone, enhancing the resistance to HE. C further enhanced the resistance to HE compared to N due to lower hydrogen diffusivity, lower crack severity, and active cross slip.
Article
Materials Science, Multidisciplinary
Ehsan Norouzi, Reza Miresmaeili, Hamid Reza Shahverdi, Mohsen Askari-Paykani, Laura Maria Vergani
Summary: The study investigated the effect of plastic deformations on the hydrogen embrittlement of TRIP steel. In situ tensile tests revealed that the total elongation loss increased by 36.8% with increasing hydrogen current density. EBSD observation showed that hydrogen charging decreased stacking fault energy, leading to the formation of more a0-martensite. The formation of a0-martensite and increased dislocation density resulted in the reversible trap sites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Jaeyeong Park, Thanh Tuan Nguyen, Hyeong Min Heo, Un Bong Baek
Summary: The effect of internal hydrogen on the mechanical properties and deformation behavior of 316L austenitic stainless steel was investigated at temperatures ranging from 123 to 298 K. It was found that while the tensile strengths of the material were not affected by the internal hydrogen, the relative reduction in area (RRA) decreased with decreasing temperature, reaching a minimum at 223 K. Hydrogen was found to enhance slip planarity, leading to an austenite stabilization effect and mitigating the formation of strain-induced martensite.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Kazuho Okada, Akinobu Shibata, Wu Gong, Nobuhiro Tsuji
Summary: This study characterized the deformation microstructure of hydrogen-charged ferritic-pearlitic steel and discussed the microscopic mechanism of hydrogen-related quasi-cleavage fracture. It was found that hydrogen affected the dislocation behavior, leading to a tangled dislocation morphology and increased dislocation density.
Article
Materials Science, Multidisciplinary
Weijian Chen, Weiyan Zhao, Pengfei Gao, Feng Li, Shuang Kuang, Yu Zou, Zhengzhi Zhao
Summary: This study investigates the interaction between dislocations, precipitates, and hydrogen atoms in high strength hot-stamped steel and its effect on hydrogen embrittlement (HE) resistance. The results show that inhibiting the diffusion and aggregation of hydrogen atoms can effectively improve the resistance to HE. Additionally, dispersed V-rich (Ti, V)C precipitates play a positive role in enhancing the resistance to HE.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Milene Yumi Maeda, Motomichi Koyama, Hayato Nishimura, Osvaldo Mitsuyuki Cintho, Eiji Akiyama
Summary: Hydrogen has significant effects on the ductility loss and fracture behavior of nitrogen-doped duplex stainless steel, resulting in quasi-cleavage and intergranular fractures associated with transgranular austenite cracking and ferrite/austenite interface cracking, respectively. Deformation twinning in austenite and nitrogen-related solution hardening are crucial factors leading to brittle-like cracking.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yunjian Song, Shu Huang, Jie Sheng, Emmanuel Agyenim-Boateng, Yunfeng Jiang, Qiang Liu, Mingliang Zhu
Summary: The hydrogen embrittlement resistance of 2205 duplex stainless steel treated with laser peening was investigated. Laser peening changed the morphology and distribution of the ferrite and austenite phases, altering the path of hydrogen transport and diffusion. The refined grain structure induced by laser peening increased the difficulty of hydrogen atom penetration by providing more tortuous grain boundaries. Furthermore, the beneficial microstructures induced by laser peening, such as dislocation entanglements and mechanical twins, helped trap hydrogen atoms and reduce their mobility. Hydrogen determination tests provided direct evidence of reduced hydrogen penetration. Additionally, the depth of the brittle region in the tensile fracture was inversely proportional to the laser power density, indicating that increasing laser power density can decrease the hydrogen embrittlement sensitivity of the 2205 duplex stainless steel.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Weijie Wu, Shenguang Liu, Xuewei Zhang, Weiguo Li, Jinxu Li
Summary: This study investigates the loss of ductility in a hydrogen-charged 2205 duplex stainless steel at different temperatures. The interactions between hydrogen and the dual-phase microstructure are observed by statistically characterizing the initiation and propagation of hydrogen-induced microcracks during tensile straining. The results show that higher temperatures lead to reduced hydrogen embrittlement susceptibility and thickness of the hydrogen-induced brittle layer. It is also found that hydrogen desorption is accelerated at 42 degrees C during straining.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Chuansen Liu, Ji Liu, Changfeng Chen, Haobo Yu
Summary: The crack propagation mechanism of 316L austenitic stainless steel in H2S environment is revealed by dislocation configurations. Slow strain rate tensile test results indicate that fracture elongation decreases and increases with temperature, suggesting stress concentration in different positions due to dislocation configurations. The relationship between crack propagation, hydrogen embrittlement, and stress concentration is analyzed, proposing a mechanism for fracture morphology change with temperature.
Article
Nanoscience & Nanotechnology
X. W. Zhou, R. Skelton, R. B. Sills, C. San Marchi
Summary: Slip blockage at slip band intersections plays a significant role in the mechanical properties of crystalline materials. Molecular dynamics simulations on Fe(70)Ni(10)Cr(20) alloys showed that secondary bands are more likely to transmit into e bands rather than twin bands. The lack of easy crystallographic pathways in twin bands explains this surprising phenomenon. Additionally, it was found that band intersection regions tend to nucleate voids, providing insights into the deformation and damage behavior of FCC metals.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Coatings & Films
Behnam Dashtbozorg, Xiao Tao, Hanshan Dong
Summary: Active-screen plasma (ASP) has shown great potential as a versatile surface engineering solution for enhancing the properties of biopolymers and carbon-based materials. By introducing moieties, modifying chemical bonding, changing morphology, and improving wettability, ASP treatments can improve the biocompatibility of biopolymers and enhance the performance of carbon-based materials.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Polymer Science
Yana Liang, Xiaoying Li, Mauro Giorcelli, Alberto Tagliaferro, Costas Charitidis, Hanshan Dong
Summary: The modification of PAN-derived carbon fibres using ASP technology with gas mixtures resulted in a more than 30% improvement in the interfacial shear strength with epoxy substrate. The enhanced adhesion mechanisms were attributed to increased chemical bonding, improved surface hydrophilicity, and enhanced van der Waals bonding.
Article
Polymer Science
Zhenxue Zhang, Eleni Gkartzou, Simon Jestin, Dionisis Semitekolos, Panagiotis-Nektarios Pappas, Xiaoying Li, Anna Karatza, Panagiotis Zouboulis, Aikaterini-Flora Trompeta, Nikolaos Koutroumanis, Costas Galiotis, Costas Charitidis, Hanshan Dong
Summary: A polyamide (PA) 12-based thermoplastic composite was modified with carbon nanotubes (CNTs), CNTs grafted onto chopped carbon fibers (CFs), and graphene nanoplatelets (GNPs) to enhance its thermal conductivity for application as a heat sink in electronic components. The addition of 15 wt% GNPs and 1 wt% CNTs showed the highest thermal conductivity in the composite material.
Article
Materials Science, Multidisciplinary
Sandra Roche, Gemma Ibarz, Cristina Crespo, Agustin Chiminelli, Andreia Araujo, Raquel Santos, Zhenxue Zhang, Xiaoying Li, Hanshan Dong
Summary: This study developed self-sensing materials that can indicate material damage through an evident optical signal. Fluorescent core-shell microcapsules were synthesized in an oil-water emulsion by in situ polymerization and embedded in a black epoxy resin, releasing a revealing substance during damage processes to detect microcracks in the material. The morphology, chemical structure, size distribution, thermal stability, and mechanical properties of the microcapsules were characterized, and the mechanical and optical characterizations of the composite were performed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
X. Z. Liang, P. E. J. Rivera-Diaz-del-Castillo
Summary: This study investigates the influence of hydrogen on microstructural alterations in components subjected to rolling contact fatigue (RCF). A dislocation-assisted carbon migration model is developed to describe the formation of hydrogen-influenced microstructural alterations. The experimental results confirm the effectiveness of the model.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Chemistry, Physical
Zhenxue Zhang, Yuejiao Zhang, Xiao Tao, Ke Liu, Andrew Burns, Peize Li, Tatiana Mukinay, Xiaoying Li, Hanshan Dong
Summary: This study discovered that pre-deposited silver on the surface of Ti6Al4V alloy can significantly accelerate oxidation and generate a larger surface area of compact oxide layer. However, silver has a less profound effect on the oxidation of other titanium alloys that don't contain vanadium. The presence of vanadium and silver plays a critical role in activating oxygen and promoting its diffusion in the oxide layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
L. Tang, F. Q. Jiang, J. S. Wrobel, B. Liu, S. Kabra, R. X. Duan, J. H. Luan, Z. B. Jiao, M. M. Attallah, D. Nguyen-Manh, B. Cai
Summary: In this study, the mechanical and microstructural responses of a high-strength medium entropy FeCrNi alloy at different temperatures were investigated using in situ neutron diffraction testing. The results showed that lattice distortion and dislocations played a significant role in enhancing the mechanical properties of the alloy. This research provides insights into the design of new alloys with superior mechanical performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Bin Zhu, Nathanael Leung, Winfried Kockelmann, Saurabh Kabra, Andrew J. London, Michael Gorley, Mark J. Whiting, Yiqiang Wang, Tan Sui
Summary: This study investigates the distribution of residual stress in Eurofer97 steel welds before and after heat treatment. Neutron diffraction and neutron Bragg edge imaging techniques are used to analyze the residual stress and strain. The relationship between microstructure, material properties, and residual stress is also studied. The findings provide insight into predicting the structural integrity of critical components in fusion reactors.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Pankaj Kumar, Saurabh Kabra, Jacqueline M. Cole
Summary: This study utilized the ChemDataExtractor text-mining toolkit to automatically generate databases of yield strength and grain size values. The extracted data showed a precision of 83.0% for yield strength and 78.8% for grain size. The databases were further validated through experiments, and the results matched well with the literature, demonstrating the usefulness of these automatically-extracted datasets.
Article
Nanoscience & Nanotechnology
Zhiyuan Jing, Weiling Guo, Helong Yu, Shaojun Qi, Xiao Tao, Yulin Qiao, Wei Zhang, Xiaoying Li, Hanshan Dong
Summary: In this study, a simultaneous approach to reducing, nitrogen doping and noble metals coating of graphene oxide (GO) using an active-screen plasma (ASP) technique is reported. By doping noble metals and a small amount of iron and chromium, reduction, nitrogen doping and noble metals coating can be achieved on graphene oxide, resulting in a significant improvement in its electrical properties.
Article
Nanoscience & Nanotechnology
Lei Tang, Oxana Magdysyuk, Fuqing Jiang, Yiqiang Wang, Alexander Evans, Saurabh Kabra, Biao Cai
Summary: This study reveals the mechanical and microstructural responses of a 316L ASS at low temperatures using in situ neutron diffraction tensile tests. The results show a linear decrease in stacking fault energy with temperature, leading to a transition in deformation mechanism.
SCRIPTA MATERIALIA
(2022)
Article
Multidisciplinary Sciences
Dong Liu, Qin Yu, Saurabh Kabra, Ming Jiang, Paul Forna-Kreutzer, Ruopeng Zhang, Madelyn Payne, Flynn Walsh, Bernd Gludovatz, Mark Asta, Andrew M. Minor, Easo P. George, Robert O. Ritchie
Summary: This study found that CrCoNi alloy displays exceptional crack growth toughness at 20 Kelvin, with high crack-initiation fracture toughness values and crack growth toughness values. The crack-tip deformation structures at 20 K involve nucleation and restricted growth of stacking faults, fine nanotwins, and transformed epsilon martensite, with coherent interfaces.
Article
Chemistry, Multidisciplinary
Zhenxue Zhang, Mikdat Gurtaran, Xiaoying Li, Hio-Ieng Un, Yi Qin, Hanshan Dong
Summary: In this study, N-type and P-type BiTe-based thin films were deposited on silicon, glass, and Kapton HN polyimide foil using magnetron sputtering technique. The morphology, microstructure, and phase constituents of the thin films were characterized by SEM/EDX, XRD, and TEM. The electrical conductivity, thermal conductivity, and Seebeck coefficient were measured by an advanced in-plane test system. The power output (open-circuit voltage and electric current) of the thin films was measured at different temperature gradients using a custom-built apparatus. The impact of deposition parameters and the dimensions of the thin films on the power output were investigated to optimize the thin-film flexible TE device for thermal energy harvesting.
Article
Materials Science, Multidisciplinary
Xiaoan Yang, G. M. A. M. El-Fallah, Qing Tao, Jun Fu, Chenlei Leng, Jenny Shepherd, Hongbiao Dong
Summary: Steel manufacturing is a complex process with numerous process parameters affecting the mechanical properties of final products. Machine learning models have been used to predict these properties, but interpretability is a challenge. This study uses iGATE to reduce input dimensions and successfully predict mechanical properties of hot-rolled steel plates.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Jian Wang, G. M. A. M. El-Fallah, Zhenqian Wang, Hui Li, Hongbiao Dong, Qing Tao
Summary: This study focuses on enhancing the strength of low-carbon martensitic steel through the refinement of the prior austenite grain size. The results showed that ultra-rapid heating and heavy cold deformation resulted in an impressive tensile strength exceeding 2 GPa, along with a higher hardness. The study also investigated the effect of high-temperature holding time on the austenite phase.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(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)
