Article
Materials Science, Multidisciplinary
Katarzyna Stan-Glowinska, Amelia Zieba, Lukasz Rogal
Summary: This study investigates the microstructures and mechanical properties of two conventionally cast Al-Mg-Zn base alloys during aging process. The results show that the Ga-bearing alloy exhibits higher hardness and tensile strength, which can be attributed to its higher precipitate number density. In addition, the structure of formed precipitates differs between the two alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Yunhe Zheng, Laure Bourgeois, Jian-Feng Nie
Summary: This study investigated the structure of precipitates in Mg-Zn-Al alloys, revealing new structural features and proposing that the rod-shaped precipitates can be described by tiling of different shapes.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Daniel Irmer, Charbel Moussa, Lisa T. Belkacemi, Mohamed Sennour, Alan Vaissiere, Vladimir A. Esin
Summary: The effect of cold rolling on the precipitation kinetics of the hardening phase was investigated in AA2024. Cold rolling induced faster coarsening kinetics and nucleation/growth of the S-phase, resulting in lower hardness of pre-deformed AA2024-T8 compared to the undeformed state. Cold rolling also led to a fine and homogeneous distribution of hardening precipitates and a different aspect ratio of S-phase precipitates. These findings may be applicable to other precipitation-hardened alloys as well.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
J. Wang, X. L. Lu, Y. Tian, Q. Y. Huang, H. B. Xie, B. Z. Sun, L. R. Liu
Summary: In addition in Mg-Sm alloy results in the replacement of traditional β' precipitates with a new type of α prismatic platelets. The platelets have a Mg2InSm composition and a coherent relationship with the α-Mg matrix. Due to the similarities between In and Mg atoms, the prismatic platelets can be classified as a generalized β'' precipitate. These findings are significant for optimizing the microstructure of Mg-based alloys and strengthening precipitation phases.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Y. J. Wan, Y. Zeng, Q. Zeng, B. Song, X. F. Huang, X. Y. Qian, B. Jiang
Summary: By intentionally transforming the habit planes of lath-shaped Mg2Sn precipitates in Mg-Sn alloy from basal plane to prismatic plane, the strength and toughness of the alloy were significantly enhanced, with the compressive yield strength (CYS) and compression to failure (CF) increasing by 137% and 75% respectively. This was attributed to the significant obstacle effect of the abundant prismatic laths on basal slip and twinning.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Diego de Araujo Santana, Claudio Shyinti Kiminami, Francisco Gil Coury
Summary: This study focuses on the prediction of yield strength of a newly developed alloy through experimental and modeling approaches. The results demonstrate that different strengthening mechanisms can be modeled independently with satisfactory accuracy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yuping Ren, Boshu Liu, Hongbo Xie, Hongxiao Li, Min Jiang, Gaowu Qin
Summary: The precipitation phases in age-hardenable Mg alloys were found to significantly impact the alloy's properties, with the Mg-4 wt%Zn alloy reaching peak hardness at 150 degrees C after 200 h of aging, mainly composed of beta(1)' with small amounts of beta(2)' and beta, showing a hexagonal close-packed (HCP) MgZn2 structure. The thin and long beta(1)' rods were found to dominate the strengthening effect of the Mg-Zn alloy.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Z. H. Li, D. Cheng, K. Wang, E. R. Hoglund, J. M. Howe, B. C. Zhouc, T. T. Sasaki, T. Ohkubo, K. Hono
Summary: This study investigated the precipitation process of a Mg-0.3Ca-0.6Zn alloy during isothermal aging at 200 degrees C using advanced microscopy techniques and first-principles calculations. The results revealed the formation of monolayer G.P. zones, which transformed into tri-atomic layer η'' and η' plates. The η' plates then formed pairs and stacks with pure magnesium layers. The unique structure of coarse η1 plates led to a different precipitate microstructure evolution from other Mg-RE-Zn alloys. First-principles calculations confirmed the crystal structure and stability of the precipitates, supporting a new precipitation sequence.
Article
Metallurgy & Metallurgical Engineering
Jing Tang, Wentao Jiang, Qingyuan Wang, Xiaobao Tian, Dean Wei, Haidong Fan
Summary: The interaction between a plate-like precipitate and twin boundaries in magnesium alloys was studied using molecular dynamics simulations. It was found that the precipitate was not sheared by one twin boundary but was sheared by another twin boundary. The predominant deformation mode in the sheared precipitate was shearing on the (110) plane. The blocking effects of precipitates with different sizes on twinning were also investigated, and it was observed that the blocking effect increased with increasing precipitate length and thickness, but weakly changed with precipitate width. Based on the revealed interaction mechanisms, a critical twin shear was calculated using the Eshelby solutions, and an analytical hardening model of sheared precipitates was proposed.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Kaixuan Li, Yuanlin Zhuang, Ligong Zhao, Dongshan Zhao, He Zheng, Shuangfeng Jia, Ying Zhang, Peili Zhao, Jianian Gui, Jianbo Wang
Summary: The study investigated the interaction between deformation twinning and long period stacking ordered (LPSO) structures in an Mg-based alloy, showing the hindrance of LPSO structures and stacking faults to twinning. The in-situ experiments revealed that thick LPSO plates effectively retard the twinning propagation, and the closer spacing between LPSO structures further suppresses twin propagation. Additionally, the study discussed the resistance of stacking faults to twinning at the atomic scale, and the strengthening effect of LPSO structures on suppressing twinning growth.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Alok Singh, Takanobu Hiroto, Machiko Ode, Hiroyuki Takakura, Karel Tesar, Hidetoshi Somekawa, Toru Hara
Summary: The precipitation of a stable quasicrystalline i-phase has been observed in a Mg-6Zn-3Al magnesium alloy, which may be the first discovery of a stable i-phase in this alloy. The dissolution of i-phase at grain boundaries leads to precipitation in the Mg-matrix during cooling. Nucleation characteristics, phase transformation, and interface morphology were investigated.
Article
Nanoscience & Nanotechnology
A. E. Davis, J. R. Kennedy, D. Lunt, J. Guo, D. Strong, J. D. Robson
Summary: Preageing technique can significantly increase the hardness of magnesium alloys, reduce total ageing times, and provide a certain degree of customization of mechanical properties through control of precipitate habit plane and morphology. However, the effectiveness of this technique depends on the alloy system, with the focus on the fundamental processes of precipitate nucleation and phase evolution.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Feiya Liu, Renlong Xin, Qing Liu
Summary: It was revealed for the first time that the Mg17Al12 precipitates formed on {1011} twin boundaries in a Mg-Al alloy hold an identical orientation relationship, driven by the minimization of the total energy between the matrix-precipitate interface and the twin-precipitate interface.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Mingjun Yang, Kai Li, Haonan Chen, Jicheng Wang, Zhuo Zhang, Ning Yan, Qiang Lu, Xinyue Lan, Tong Yang, Ying Zhang, Gunan Li, Shuyan Zhang, Yong Du
Summary: This study investigated the corrosion process of MgSi nano-precipitates in an Al-Mg-Si alloy using transmission electron microscopy. It was found that coarsened beta' precipitates in the over-aged state were corroded through dissolution of Mg and oxidation of Si, transforming into amorphous SiO2 precipitates. This newly discovered crystalline-to-amorphous phase transformation plays a role in intragranular corrosion behavior, explaining the reduced susceptibility of over-aged Al-Mg-Si alloys to pitting and intergranular corrosion.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Yu Tian, Hao Yu, Tao Zhou, Kun Wang, Zimeng Zhu
Summary: This study reveals the precipitation behavior and morphological characteristics of MX precipitates in deformed Ti-V-Nb multi-microalloyed steels, introducing the L parameter model for evaluating the shape of precipitates. The evolution rules of precipitate morphology provide insights for developing high-performance microalloyed steels.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Jiawei Lai, A. Bolyachkin, N. Terada, S. Dieb, Xin Tang, T. Ohkubo, H. Sepehri-Amin, K. Hono
Summary: Fe2P-type compounds exhibit a giant magnetocaloric effect and are studied for room temperature applications. In this study, rare-earth-free compounds with cryogenic magnetocaloric effect were optimized using data mining and machine learning, demonstrating promising magnetocaloric performance.
Article
Materials Science, Multidisciplinary
P. Tozman, T. Fukazawa, D. Ogawa, H. Sepehri-Amin, A. Bolyachkin, T. Miyake, S. Hirosawa, K. Hono, Y. K. Takahashi
Summary: The effect of V on the phase stability and intrinsic magnetic properties of SmFe12-xVx (0 <= x <= 1.9) thin films and bulk samples is investigated. V can stabilize the ThMn12-type phase and decrease lattice parameters. Above a certain limit, the formation of a Sm-rich phase is observed. Moreover, the introduction of V can enhance the Curie temperature and anisotropy field while decreasing the magnetization. V-substituted compounds exhibit higher anisotropy field than other compounds in a certain temperature range.
Article
Physics, Applied
Pelin Tozman, Hossein Sepehri-Amin, Xin Tang, Tadakatsu Ohkubo, Kazuhiro Hono
Summary: Substitution of Co for Fe in SmFe12-based compounds realizes large saturation magnetization. This study successfully reduces the concentration of Co while maintaining a large magnetic moment in the compound. Additionally, (Sm0.8Y0.2)Fe12-based compounds exhibit superior magnetic properties compared to Nd2Fe14B.
APPLIED PHYSICS EXPRESS
(2022)
Article
Physics, Condensed Matter
Akira Uedono, Hideki Sakurai, Jun Uzuhashi, Tetsuo Narita, Kacper Sierakowski, Shoji Ishibashi, Shigefusa F. Chichibu, Michal Bockowski, Jun Suda, Tadakatsu Ohkubo, Nobuyuki Ikarashi, Kazuhiro Hono, Tetsu Kachi
Summary: In this study, the annealing behaviors of defects and the diffusion characteristics of Mg in ion-implanted GaN were investigated. It was found that high concentration of Mg doping caused Mg diffusion into the bulk and reaction with vacancies, while nitrogen implantation suppressed the Mg diffusion and enhanced the donor-acceptor pair emission, which is of great significance for improving the performance of GaN materials.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
G. Lambard, T. T. Sasaki, K. Sodeyama, T. Ohkubo, K. Hono
Summary: The paper presents an active learning pipeline assisted by machine learning and Bayesian optimization for optimizing the process of permanent magnet to achieve high coercivity and remanence.
SCRIPTA MATERIALIA
(2022)
Article
Multidisciplinary Sciences
Xin Tang, H. Sepehri-Amin, N. Terada, A. Martin-Cid, I Kurniawan, S. Kobayashi, Y. Kotani, H. Takeya, J. Lai, Y. Matsushita, T. Ohkubo, Y. Miura, T. Nakamura, K. Hono
Summary: The authors demonstrate a series of materials with a large and reversible magnetocaloric effect, suitable for the full temperature range required for hydrogen liquefaction. By eliminating the magneto-structural phase transition, the giant magnetocaloric effect becomes reversible.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yudai Yamaguchi, Yuya Kanitani, Yoshihiro Kudo, Jun Uzuhashi, Tadakatsu Ohkubo, Kazuhiro Hono, Shigetaka Tomiya
Summary: In this study, the compositional and structural investigations of threading dislocations (TDs) in InGaN/GaN multiple quantum wells were conducted using correlative transmission electron microscopy (TEM) and atom probe tomography (APT). The results showed that indium atoms diffuse along the TD and their concentration decreases with distance from the InGaN layer. It was directly observed that the indium atoms originating from the InGaN layer diffuse toward the epitaxial GaN surface through the TD, possibly via the pipe diffusion mechanism induced by strain energy relaxation.
Article
Nanoscience & Nanotechnology
E. Dengina, A. Bolyachkin, H. Sepehri-Amin, K. Hono
Summary: This paper presents a machine learning method to evaluate the demagnetization curves of FePt granular films. The predicted parameters of magnetic anisotropy and defect volume fractions were in good agreement with experimental results. This study provides a new approach for characterizing and optimizing the structure of FePt granular media.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
Kazuho Okada, Akinobu Shibata, Taisuke Sasaki, Hisashi Matsumiya, Kazuhiro Hono, Nobuhiro Tsuji
Summary: This study aimed to improve the resistance against hydrogen embrittlement by increasing the concentration of carbon segregated at prior austenite grain boundary (PAGB), XPAGB, in low-carbon martensitic steels. The specimens with and without carbon segregation treatment (Non-seg and Seg specimens, respectively) had similar microstructures, except for higher XPAGB in the Seg specimen. The Seg specimen exhibited higher maximum stress and smaller fraction of intergranular fracture surface under hydrogen-charged conditions, indicating that segregated carbon suppressed hydrogen accumulation and increased cohesive energy of PAGB.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
T. Nakata, Z. H. Li, T. T. Sasaki, K. Hono, S. Kamado
Summary: This study reports the influence of grain boundary segregation on microstructure development during hot-rolling of AZ31 alloy. Annealing at 420 degrees C induces strong grain boundary segregation, promoting dynamic recrystallization and strong basal texture. Annealing at 500 degrees C reduces grain boundary segregation, hindering dynamic recrystallization and resulting in a weak rolling-direction-split texture, improving the stretch formability of the alloy sheet.
SCRIPTA MATERIALIA
(2022)
Article
Microscopy
Sujin Lee, Atsuko Sato, Takehiro Tamaoka, Kunio Yubuta, Mitsunari Auchi, Taisuke Sasaki, Tadakatsu Ohkubo, Kazuhiro Hono, Yasukazu Murakami
Summary: This paper proposes a method using electron holography to provide a phase image of the demagnetization field (H-d) within a thin-foil permanent magnet. The observation of H-d remains challenging because electron holography can only image the magnetic flux density (B), which is a combination of contributions from magnetization (M), stray magnetic field (H-s) outside the specimen, and H-d inside the specimen. The phase map approximating H-d, determined from electron holography observation of a Nd2Fe14B single-crystalline specimen, shows good agreement with micromagnetic theory's prediction. This method can be applied to study the coercivity mechanism of permanent magnets, which is sensitive to the demagnetization field.
Article
Materials Science, Multidisciplinary
Z. Wang, T. T. Sasaki, Y. Une, T. Ohkubo, K. Hono
Summary: Record-breaking high coercivity is achieved in Dy-free sintered magnets by separately diffusing Dy70Cu30 and Pr68Cu32 eutectic alloys. The low Dy content sample exhibits a high coercivity of 2.8 T and an excellent temperature coefficient of coercivity. The unique presence of a uniform Dy-rich shell and enriched Pr near the surface of Nd2Fe14B grains strengthens the anisotropy field, resulting in the high coercivity without alloying Dy to the initial magnet.
Article
Chemistry, Physical
Z. H. Kautsar, H. Sepehri-Amin, Xin Tang, R. Iguchi, K. Uchida, T. Ohkubo, K. Hono
Summary: The resistivities of anisotropic Nd-Fe-B-based magnets were increased in parallel and perpendicular directions to the c-axis by hot-deforming Nd-Fe-B melt-spun flakes coated with DyF3 through electrophoretic deposition. As a result, the operating temperature under high-frequency AC magnetic field decreased by 20°C due to the reduction of eddy current loss. The formation of a resistive layer composed of NdF3 at the interface of original ribbons in the hot-deformed magnet was observed. The excess Dy diffused into the original ribbon flakes and formed a Dy-rich shell in Nd2Fe14B grains, resulting in a high coercivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Microscopy
Jun Uzuhashi, Tadakatsu Ohkubo, Kazuhiro Hono
Summary: Atom probe tomography (APT) is a widely used technique for analyzing the microstructure of alloys and devices. In this study, a method for automatically fabricating the desired tip shape using a script-controlled FIB-SEM system was developed. The effect of intentionally changing the tip shape on APT data was also discussed.
Article
Engineering, Electrical & Electronic
Ruma Mandal, Yuta Sasaki, Ivan Kurniawan, Jiwon Jung, Yoshio Miura, Yuya Sakuraba, Kazuhiro Hono, Yukiko K. Takahashi
Summary: In this work, a high-temperature time-resolved magneto-optical Kerr effect microscopy is developed to measure the magnetization dynamics at elevated temperatures, providing a crucial understanding of the damping mechanism for highly anisotropic ferromagnetic materials and its dependence on temperature.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
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)
