Article
Materials Science, Ceramics
Xuerui Wei, Bin Xu, Pengfei Guan
Summary: We found a direct link between the mechanical heterogeneity and local structural response of metallic glasses, revealing that the mechanical heterogeneity is not only related to static atomic packing but also to the dynamic evolution of the amorphous structure.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Shuo Li, Ping Huang, Fei Wang
Summary: This study demonstrates that pronounced beta-relaxation can be achieved in Cu50Zr50 MG, effectively improving the plasticity of CuZr alloys. Simulation results and analysis suggest that higher degree of heterogeneity generated in severely deformed regions is responsible for the unusual pronounced beta-relaxation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Hezhi Zhang, Honggang Sun, Shaopeng Pan, Daniel Sopu, Chuanxiao Peng, Kang Zhao, Kaikai Song, Shengzhong Yuan, Jichao Qiao, Li Wang, Juergen Eckert
Summary: This study investigated the origin of structural heterogeneity in metallic glasses by simulating liquid structures upon cooling of Zr-Co-Al alloys. The findings suggest that chemical structural heterogeneity plays a crucial role in the formation of Zr65Co30Al5 MG, which displays increased ductility with more pronounced chemical structural heterogeneity. Bond pair analysis revealed the prominence of five-fold symmetric bond pairs in both MGs, with Zr65Co30Al5 MG exhibiting noticeable six-fold symmetric stability.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Physical
A. Samiri, A. Khmich, A. Hassani, A. Hasnaoui
Summary: Molecular dynamics simulations were used to investigate the annealing effect on binary Mg25Al75 metallic glasses with different cooling rates, showing changes in local atomic structures with decreasing cooling rates. Annealing led to variations in elastic constants and moduli, indicating improved elastic behavior and resistance to compression.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
W. Porter Weeks, Katharine M. Flores
Summary: Researchers have used geometric alignment and density-based clustering algorithms to quantitatively describe the short-range atomic structure in the liquid state of five metallic glass-forming systems. They found that each liquid is composed of geometrically-similar atomic clusters, and the distribution of these clusters is inversely correlated to the glass-forming ability observed experimentally.
Article
Multidisciplinary Sciences
Zhen Zhang, Jun Ding, Evan Ma
Summary: Plastic flow in metallic glasses is not caused by identifiable local defect regions. Through a realistic model, we found that shear transformations involve only a small percentage of atoms and their locations and distribution vary under different mechanical loading conditions.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Materials Science, Multidisciplinary
Hong Li, Qing-Xiang Pei, Zhen-Dong Sha, Paulo S. Branicio
Summary: The study investigates the fracture toughness of metallic glasses, finding that cooling rate and strain rate play a crucial role in increasing toughness. Additionally, the fracture toughness decreases as temperature increases.
MECHANICS OF MATERIALS
(2021)
Article
Materials Science, Ceramics
Wenfei Lu, Jo-Chi Tseng, Aihan Feng, Jun Shen
Summary: The study aimed to clarify the structural origin of the enhancement in glass-forming ability of binary NiNb metallic glasses. Ni62.5Nb37.5 alloy exhibited the best glass-forming ability and the densest atomic-packing structure among the four components, with a larger fraction of full icosahedral clusters. The glass structure in Ni62.5Nb37.5 MG was a heterogeneous mixture of interpenetrating icosahedral clusters, forming a chain-like network structure in the matrix. These Ni-centered icosahedra polyhedra played an essential role in controlling GFA.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Engineering, Mechanical
Yao Tang, Haofei Zhou
Summary: This study investigates the effect of high pressure heat treatment (HPHT) on cavitation performance of a brittle Fe80P20 metallic glass (MG) through molecular dynamics simulations. The results show that HPHT can improve the cavitation resistance of MG and induce a more uniform distribution of P atoms. It is found that HPHT can change the local atomic structure from a liquid-like state to a solid-like state, resulting in an increased stress threshold for initiating cavitation.
ACTA MECHANICA SINICA
(2023)
Article
Materials Science, Multidisciplinary
Qijing Sun, David M. Miskovic, Michael Ferry
Summary: This study investigates the structure of metallic glasses and reveals the influence of deposition rate on their stability. Structural heterogeneity and the geometric shape and distribution of loosely packed phases play significant roles in achieving ultrastability. The findings open up new possibilities for the design of ultrastable metallic glasses.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
J. Q. Wu, H. P. Zhang, M. Z. Li
Summary: The relationship between structure and relaxation dynamics in metallic glass-forming liquids was studied through classical molecular dynamics simulations. It was found that the Debye-Waller factor decreases with increasing five-fold local symmetry and a new equation describing this relationship was derived. These findings suggest a common structural basis for both short-time beta-relaxation and long-time alpha-relaxation dynamics.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Yicheng Wu, Bin Xu, Xuefeng Zhang, Pengfei Guan
Summary: Significant progress has been made in predicting the local structural instability of various disordered systems through supervised machine learning (ML) models. However, the generalization and interpretability of these models need to be addressed. By analyzing the weighting function of the ML prediction models and the radial distribution function (RDF) of the predicted system, a density-fluctuation model with good generalization ability is proposed based on static structure information. This model provides a more reliable prediction of structural instability for different systems.
Article
Materials Science, Ceramics
J. L. Ma, H. Y. Song, M. R. An, W. W. Li, R. Q. Han
Summary: Researchers found that adjusting the Cu composition can significantly improve the strength of dual-phase nanoglass while maintaining plasticity; The mechanical properties of DPNGs are related to the strength of BR and GR, as well as the GGI structure; An optimal matching relationship between GR and BR can be obtained for high-performance DPNG development.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Yanming Zhang, Liping Huang, Yunfeng Shi
Summary: Consolidating glassy nanoparticles with different compositions can prepare Al2O3-SiO2 binary glasses with structural and chemical heterogeneities, exhibiting excellent ductility and enhanced flow strength, offering a novel method for synthesizing strong and transparent oxide glasses.
Article
Materials Science, Multidisciplinary
Xiaodi Liu, Quanfeng He, Wenfei Lu, Ziqing Zhou, Jinsen Tian, Dandan Liang, Jiang Ma, Yong Yang, Jun Shen
Summary: Metallic glasses have a non-uniform structure and dynamics at the nanoscale, with static and dynamic heterogeneities being crucial for their deformation mechanism. Machine learning can be used to learn defects in MGs from atomic trajectories and identify which atoms behave like liquids under stress.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Physical
Rui Li, Yimo Ma, Xingshuo Liu, Ye Lu, Yifei Zhang, Pengfei Yu, Gong Li
Summary: In this study, the effect of defects on phase transition in high-entropy alloys was investigated by comparing the structure evolutions of ball-milled and as-cast samples. The ball-milled alloy exhibited a lower phase-transition-pressure and a higher fraction of hcp phase due to a higher density of defects and a lower nucleation energy barrier compared to the as-cast alloy. The findings suggest a potential approach for customizing the percentage of different phases in high-entropy alloys to improve their structure and characteristics as a novel engineering material.
Article
Materials Science, Multidisciplinary
Wei Zhao, Jiacheng Yu, Mindong Hu, Honglei Hu, Junting Luo, Gong Li
Summary: The crystallization toughening effect of Fe-based amorphous alloys under strain-heat coupling was investigated. The results showed that the alloys subjected to strain-heat coupling had a greater toughening effect due to changes in the morphology of the precipitated crystal phase and the introduction of free volume through plastic deformation, promoting the proliferation of shear bands. Excessive plastic deformation, however, resulted in direct fracture of the materials.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
X. S. Liu, R. Lia, X. F. Fan, Q. Q. Liu, X. Tong, A. X. Lia, S. Xu, H. Yang, S. B. Yu, M. H. Jiang, C. Huo, P. F. Yu, M. T. Dove, G. Li
Summary: In this study, dual-morphology B2 precipitates were obtained by thermo-mechanical processing in Co36Cr15Fe18Ni18Al8Ti4Mo1 MPEA. The dual-morphology B2 precipitates were found to enhance the yield strength and ultimate tensile strength significantly, suggesting the potential for optimizing the mechanical properties of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
A. X. Li, P. F. Yu, Y. P. Gao, M. T. Dove, Gong Li
Summary: We describe the development of a non-equiatomic CoCrFeNi2Al0.3Ti0.25 high entropy alloy (HEA) with high-density nano-lamellar precipitates and ultrafine grain structure. The HEA annealing at 700 degrees C (CR-700) exhibits ultra-high yield strength, ultimate tensile stress, and excellent total elongation, overcoming the strength-ductility trade-off. The ultra-high strength is mainly attributed to the synergistic strengthening effects of both nano-lamellar precipitates and ultrafine grains.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Huan Zhang, Yaqi Zhang, Chen Chen, Pengfei Yu, Li-Min Wang, Gong Li
Summary: A novel high-conductivity Agx[(Ga2Te3)34(SnTe)66]100-x tellurium-based glassy system was fabricated and showed potential for thermoelectric applications. The fabricated Ag10[(Ga2Te3)34(SnTe)66]90 glass exhibited higher room-temperature conductivity, larger glass transition temperature, and ultralower thermal conductivity compared to previously reported glassy systems. This distinctive Ag-Ga2Te3-SnTe system can be further investigated in similar glassy semiconductors and also has potential applications in other fields.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Shu Xu, Xingshuo Liu, Rui Li, Xiaofeng Fan, Qingqi Liu, Aoxiang Li, Pengfei Yu, Yongyong Wang, Gong Li
Summary: Fe3Cr2CoNiAlx (x = 0.6, 0.7, 0.8, 1.0, 1.1, 1.2) high entropy alloys (HEAs) with dual-scales B2 precipitated were prepared. The microstructure changed from face-centered-cubic (FCC) and body-centered-cubic (BCC) to a single BCC structure with the increasing of Al content. By controlling the concentration of Al element in the BCC-based HEAs, the structure can be tuned to two coherent BCC phases: medium B2 (m-B2) precipitates with an average length of 200-300 nm and smaller size B2 (s-B2) precipitates with an average diameter of 10-50 nm. The Fe3Cr2CoNiAl1.2 HEA exhibited excellent compression properties, with yield strength and fracture strain of 1464 MPa and 20%, respectively. The main strengthening mechanism was determined to be precipitation strengthening. This work provides a useful mean by tailoring multi-scale phase to achieve excellent properties in BCC-based high entropy alloys.
Article
Materials Science, Multidisciplinary
Xueming Wei, Lijun Zhang, Chunzhi Zhang, Gong Li
Summary: Although most BCC-based high-entropy alloys have high strength and excellent high temperature mechanical properties, their low plasticity greatly limits their application. In this study, a new BCC/B2 AlCrFeMnNi2 high-entropy alloy with a unique sunflower-like eutectic microstructure was prepared. This alloy exhibited high yield strength, fracture strength, and compressive plastic strain, surpassing many other BCC/B2 high-entropy alloys. The excellent mechanical properties are attributed to its unique microstructure consisting of coherent interface and bimodal distribution of precipitates. Our results provide a meaningful reference for improving the plasticity of BCC-based high-entropy alloys.
Article
Materials Science, Multidisciplinary
Huan Zhang, Yaqi Zhang, Gong Li
Summary: In this study, new tellurium-based amorphous alloys [(Ga2Te3)(34)(SnTe)(66)](100-x)-Sn-x were prepared and the glass-forming region was determined to be x = 0 to 10 mol%. The increasing Sn content led to a decrease in the glass transition temperature T-g and crystallization onset temperature T-c, resulting in a decrease in the stability criterion Delta T. The crystallization kinetics were investigated using DSC, and the activation energies of the amorphous sample were determined. The crystalline products were identified and showed potential for high-performance thermoelectric glass-ceramic materials.
Article
Materials Science, Multidisciplinary
Huan Zhang, Yaqi Zhang, Pengfei Yu, Li-Min Wang, Gong Li
Summary: This paper comprehensively investigates the microstructure evolutions and crystallization kinetics of Agx-[(Ga2Te3)(34)(SnTe)(66)](100-x) (x = 6, 8 and 10%) telluride glasses under non-isothermal conditions. The XRD, TEM, and SAED techniques were used to analyze the microscopic structure. The crystalline products were identified as the SnTe phase and Ga6SnTe10 phase. The crystallization process consisted of two overlapped peaks, corresponding to the precipitation of SnTe and Ga6SnTe10. The activation energy for crystallization events decreased with increasing Ag content.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Physics, Applied
R. Li, P. F. Yu, H. Yang, M. H. Jiang, S. B. Yu, C. Huo, X. S. Liu, G. Li
Summary: Pressure-driven phase transition in metals is an effective means to induce fresh phase and tune material properties, and the CoNiFe, CoNiCr, and CoNiV multi-principal element alloys were investigated in this study. The pressure-induced phase transition from face-centered cubic to hexagonal close-packed phase was observed at different pressures for each alloy. The increase in lattice distortion degree was found to decrease the initial phase-transition-pressure, and the probability of stacking fault formation increased in the order of CoNiFe, CoNiCr, and CoNiV alloys.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Hao Yang, Xingshuo Liu, Aoxiang Li, Rui Li, Shu Xu, Mengdi Zhang, Pengfei Yu, Subo Yu, Minghui Jiang, Chao Huo, Gong Li
Summary: The effect of Si content on the microstructure evolution and corrosion properties of Al0.2CoCrFe1.5NiSix (x = 0, 0.1, 0.2, 0.3) high entropy alloys (HEAs) was systematically investigated. The addition of Si element led to a change in microstructure from single face-centered cubic (FCC) phase to a dual-phase structure composed of FCC and body-centered cubic (BCC) phases. The corrosion resistance of the alloys was affected by the Si content, with the Al0.2CoCrFe1.5NiSi0.1 HEA exhibiting the best corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Xinliang Shi, Gong Li, Mengdi Zhang, Hanqing Xu, Ziyang Li
Summary: A novel Co-free non-equiatomic Cr-Fe-Ni-Nb eutectic high entropy alloys (EHEAs) with lamellar microstructure showed superior corrosion resistance in 3.5 wt% NaCl solution. The increase of Nb content resulted in higher volume fraction of Laves phase and smaller interlayer distance, leading to improved corrosion resistance. The Co-free EHEAs displayed a wide passive region, low corrosion current density, and excellent repassivation ability compared to established anticorrosion alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
R. Li, X. S. Liu, A. X. Li, P. F. Yu, C. S. Feng, S. Nan, M. Xiao, Z. Guan, C. Huo, S. B. Yu, M. H. Jiang, F. X. Zhang, G. Li
Summary: This study systematically compared the microstructural and mechanical properties of samples aged under high-pressure and ambient-pressure conditions. The results showed that the high-pressure samples had a higher volume fraction of discontinuous precipitates and achieved grain refinement through high-pressure treatment. The study provides important guidance for optimizing nano-precipitates through pressure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
G. J. Zhang, Q. G. Zhang, X. G. Wang, M. Sun, J. F. Yang, T. Hao, G. Li, H. Wang, J. G. Liu, Q. F. Fang, X. P. Wang
Summary: In this study, a newly developed equal channel angular pressing (ECAP) route BC-UD2 was used to extrude Fe9Cr1.5W0.7Si ferrite/martensitic steel, and the effect of microstructural evolution on the internal friction (IF) behavior was systematically investigated. The microstructural characterization revealed a transformation from an initial ferrite/martensitic structure to a fine laminar structure with a roughly 45 degree inclination to the extrusion direction (ED), accompanied by the evolution of texture. The dissolution of M23C6 and MX phases after extrusion led to a decrease in the Zener-Smith dragging force. The correlation between microstructure characterization results and IF behavior demonstrated the accuracy and reliability of the IF technique for studying the recrystallization behavior of structural materials in nuclear reactors.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Astronomy & Astrophysics
MingHui Jiang, SuBo Yu, BenCong Lai, FuXiang Zhang, Dong Ma, T. Martin Dove, Gong Li
Summary: Crystallography only provides information about the average atomic structure of a crystal, while the combined scattering method and Reverse Monte Carlo (RMC) simulation have the unique advantage of providing multiple information about a crystal, including the average atomic structure, atomic spacing, bond angles, orientation, and deformation of the structural polyhedron at the local scale. Recently, the RMC method has seen rapid experimental and theoretical development with the help of third-generation synchrotron and spallation neutron sources. Additionally, the RMC method is widely used to study the local fluctuations and fine structure of disordered materials.
SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA
(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)
