Article
Materials Science, Multidisciplinary
Yuming Qi, Heming Xu, Tengwu He, Miao Wang, Miaolin Feng
Summary: Molecular dynamics simulations of a typical polycrystalline CoCrFeMnNi high-entropy alloy reveal that FCC -> HCP phase transformation is the dominant plastic deformation behavior in the early stages, while twinning induced plasticity plays a critical role at large strains.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Mechanics
Sandeep Kumar Singh, Avinash Parashar
Summary: This study investigates the crack tip behavior in multi-elemental alloys, finding that medium and high entropy alloys exhibit higher fracture resistance and plasticity, which could enhance their diverse structural applications.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Bin Li, Kefan Chen
Summary: This study used atomistic simulation to investigate the twinning mechanism in titanium. The results revealed that the structure of the parent lattice is transformed during twinning, and the twin boundaries lose mirror symmetry. Atomic shuffling and the formation of multi-layer interface zones play a crucial role in twin growth.
Article
Materials Science, Multidisciplinary
Like Xu, Zhifeng Huang, Qiang Shen, Fei Chen
Summary: This study investigates the plasticity heterogeneity in different gradient nano-grained (GNG) metals through large-scale molecular dynamic simulations. The findings reveal metal-type dependence in terms of dislocation and deformation twinning-based plasticity. In terms of grain boundary activities, GNG Cu, Al, and Ni exhibit similar overall behavior, but GNG Ni shows higher grain boundary-free volume and stress due to the twinning process induced by grain size gradient.
MATERIALS & DESIGN
(2022)
Article
Physics, Applied
Saurabh S. Sharma, Avinash Parashar
Summary: The safety of nuclear reactors is a major concern for designers, with helium embrittlement in nickel-based alloys presenting challenges in the nuclear industry. Studies have shown that helium bubbles have a detrimental effect on the mechanical properties of nickel, but the exact mechanism of helium-induced embrittlement is still not fully understood. Research on the effect of various configurations of helium bubbles on the mechanical properties of nickel crystals reveals that the orientation of the crack plane and direction in the crystal play a significant role in deformation mechanisms. Helium bubbles reduce the strength of nickel crystals with cracks, but increasing the number of helium atoms has a negligible effect on material toughness. Switching the spatial coordinates of helium bubbles near the crack tip can significantly affect the strength of single crystal nickel, suggesting that understanding crystal geometry and helium cluster modulation is important for studying defects in nickel crystals.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Engineering, Mechanical
Xuesong Xu, Hongsheng Ding, Haitao Huang, He Liang, R. V. Ramanujan, Ruirun Chen, Jingjie Guo, Hengzhi Fu
Summary: The deformation mechanism responsible for the high-cycle rotating bending fatigue of a high-Nb TiAl alloy was studied. Superlattice dislocations [0 1 1] and twinning dominated the fatigue deformation in the gamma phase. Dislocations 11 0 in the B2 phase were induced by twins in the adjacent gamma phase due to the low stacking fault energy caused by the high Nb content. Stress transfer between adjacent phases was achieved through atomic rearrangement of the interface by twinning. Local stresses were accommodated by continuous dislocation slip in the B2 phase, deformation twins, and twin intersections in the gamma phase.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Materials Science, Multidisciplinary
Soumya Sourav Sarangi, Anand K. Kanjarla
Summary: This study investigates the effect of introducing carbon atoms into the core of screw dislocations in body centered iron. The results show that the core reconstruction leads to changes in the symmetry of the dislocation core and asymmetry in the twinning-antitwinning critical resolved shear stress (CRSS). Furthermore, the loading conditions also influence the CRSS of the dislocation core.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Qiang Yang, Zixiang Yan, Shuhui Lv, Kai Guan, Xin Qiu
Summary: Abnormal creep stress exponents were reported for heat-resistant magnesium alloys without detailed explanation on underlying creep mechanisms. The study on a Mg-3.76Al-3.52RE-0.23Mn alloy showed varying n-values at different stresses, with microstructural analysis suggesting changes in dominant creep mechanisms. Introducing threshold stress and internal stress helped rationalize the abnormal n-values, providing insights for improving creep resistance in magnesium alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
A. R. Khoei, G. Tolooei Eshlaghi, S. Shahoveisi
Summary: This paper investigates creep deformation mechanisms in nickel-based single crystal superalloys through two-dimensional molecular dynamics simulations, revealing various mechanisms such as gamma' precipitate shearing, micro-twinning, and diffusion-mediated climb.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Mechanical
Chunhui Wang, Chaoyang Sun, Wang Cai, Lingyun Qian, Xiangru Guo, M. W. Fu
Summary: This study developed a discrete dislocation plasticity (DDP) model that incorporates two twin nucleation mechanisms and introduces the effect of stacking fault energy on partial dislocation motion. The evolution of partial dislocation slip-mediated deformation twins in micron-sized pillars of twinning-induced plasticity steel was investigated using DDP simulation, showing agreement with experimental results. The research advances the understanding of partial dislocation slip-mediated twinning mechanisms by considering the competition between new twin activation and near-twin merging in determining the evolution of twin thickness.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Multidisciplinary Sciences
Xiang Wang, Sixue Zheng, Shuhei Shinzato, Zhengwu Fang, Yang He, Li Zhong, Chongmin Wang, Shigenobu Ogata, Scott X. Mao
Summary: As the sample size decreases to the nanoscale, surface-related mechanisms become crucial in the deformation of nanoscale crystals, including diffusion-induced nucleation behaviors and the potential for mass transport facilitated by the ultrahigh surface-to-volume ratio.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Mingao Li, Shulong Xiao, Lijuan Xu, Jing Tian, Yuyong Chen
Summary: The study shows that dispersive perovskite-Ti3AlC can strengthen TiAl alloys and contribute to better plastic deformation and elongation in high niobium containing TiAl alloys. Transmission electron microscopy and high-resolution transmission electron microscopy reveal the dislocation gliding and twinning mechanism during plastic deformation, as well as the relationship between perovskite-Ti3AlC and the neighboring matrix phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Jinhui Wang, Lei Zhang, Peipeng Jin, Lijia Chen, Xiaoguang Yuan, Hongbin Ma
Summary: The dynamic mechanical behaviors of the as-extruded Mg-1Al-6Y alloy were investigated using split Hopkinson pressure bar (SHPB). The results revealed that the microstructures and deformation mechanisms of the extruded alloy are sensitive to the strain rates and temperatures. The yield strength and compressive strength of the alloy are improved with increasing strain rate and weakened with increasing temperature. Temperatures have a significant influence on the dynamic mechanical behaviors of Mg-1Al-6Y.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Cong Dai, Nana Ofori-Opoku
Summary: Deformation-induced dislocations have a significant impact on the mechanical properties of polycrystalline HCP metals. Grain orientation and loading directions affect the nucleation and interactions of dislocations. Alloying improves the deformation resistance of materials.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Shuo Zhou, Peng Chen, Min Zha, Yongfu Zhu, Bin Li, Hui-Yuan Wang
Summary: Atomistic simulations were conducted to investigate the interaction between prismatic dislocations and {1122} twin boundary in hexagonal close-packed titanium. Unusual and interesting dislocation transmutation was observed, where a (1010) 13 [1210] dislocation first transformed into a (0112) 3[2110] dislocation within the twin, which is not a common slip plane, and then further transformed into a prismatic dislocation (0110) 13 [2110] with lower line energy. This behavior, along with other prismatic dislocation transmutations, can be explained from the perspective of lattice correspondence in deformation twinning.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Bingqiang Wei, Wenqian Wu, Mingyu Gong, Shuwei Yu, Song Ni, Min Song, Jian Wang
Summary: Deformation twinning is crucial in determining the mechanical behavior of hexagonal metals. Lowering the energy of basal stacking faults can promote the formation of basal stacking faults and face centred cubic phase, which affects the propagation and growth of deformation twins. This study provides insights into the influence of lowering basal stacking faults energy on twinning behaviors in hexagonal metals.
Article
Engineering, Multidisciplinary
Yiming Wu, Chang Zhou, Rui Wu, Lixin Sun, Chenyang Lu, Yunzhen Xiao, Zhengxiong Su, Mingyu Gong, Kaisheng Ming, Kai Liu, Chao Gu, Wenshu Yang, Jian Wang, Gaohui Wu
Summary: Aluminum alloys have low yielding and flow strengths, but a super-strong Al-30vol%SiC composite with a flow strength of 1.18 GPa and a uniform strain of 16.0% was reported. The alloy exhibited strengthening from nano-spaced SiC nanowires and high-density stacking faults (SFs) rarely stabilized in Al. SFs showed excellent thermal stability up to 320 degrees C and could be regained by thermal cooling even after elimination during annealing at 600 degrees C.
COMPOSITES PART B-ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Jian Wang, Amit Misra
Summary: Heterostructured materials composed of nanoscale phases can enhance both yield strength and strain hardening, leading to uniform distribution of plastic flow. Deformation mechanisms in nanoscale eutectic binary systems enable slip transmission and interface-enabled plasticity, explaining the strength-ductility relationship and distributed plastic flow in multi-component eutectics.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
N. A. Richter, Y. F. Zhang, M. Gong, T. Niu, B. Yang, S. Xue, J. Wang, H. Wang, X. Zhang
Summary: This study presents a solute synergy strategy to stabilize the microstructures and improve thermal stability in high strength nanotwinned (NT) Al-Co-Zr alloys. Zr solute additions promote microstructural and mechanical stability up to 400 degrees C. In-situ microcompression tests demonstrate high strengths and deformability in these ternary NT alloys. Density functional theory calculations provide insight into the interplay between Co and Zr solute and their role in stabilizing incoherent twin boundaries. This work offers a strategy for enhancing both strength and thermal stability of nanocrystalline materials through synergistic solute pairs.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Bingqiang Wei, Wenqian Wu, Jian Wang
Summary: Ni-SiOC nanocomposites maintain crystal-amorphous dual-phase nanostructures after high-temperature annealing at different temperatures. Both crystal Ni and amorphous SiOC maintain stability under He irradiation. The amorphous SiOC ceramic is immune to He irradiation damage, contributing to the He irradiation resistance of Ni alloy.
Article
Chemistry, Multidisciplinary
Amanda L. L. Coughlin, Zhiliang Pan, Jeonghoon Hong, Tongxie Zhang, Xun Zhan, Wenqian Wu, Dongyue Xie, Tian Tong, Thomas Ruch, Jean J. J. Heremans, Jiming Bao, Herbert A. A. Fertig, Jian Wang, Jeongwoo Kim, Hanyu Zhu, Deyu Li, Shixiong Zhang
Summary: Enhancement of electron correlation in a topological metal, iridium dioxide, is demonstrated through vanadium doping. The increase in electron correlation is supported by Raman intensity decrease and increased electrical resistivity. The doping also leads to a significant reduction in lattice thermal conductivity. Density functional theory calculations suggest that the reduction in thermal conductivity is due to complex phonon dispersion and reduced energy gap between phonon branches.
Article
Engineering, Manufacturing
Haifei Lu, Weiwei Deng, Kaiyu Luo, Yuhua Chen, Jian Wang, Jinzhong Lu
Summary: An innovative hybrid additive manufacturing (HAM) technology combining laser shock peening without coating (LSPwC) and laser powder bed fusion (LPBF) has been proposed to tailor the microstructure of additively manufactured Ti6Al4V titanium alloys. The experimental results demonstrated that the martensitic laths in the LSPwC-treated region changed to equiaxed ultrafine grains under alternating mechanical and thermal effects. Consequently, compared with the LPBF specimen, the HAM specimen indicated a high ultimate tensile strength of -1303 MPa and an excellent elongation of -12.7 %.
ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Quan Li, Mingyu Gong, Jiancheng Jiang, Yiwen Chen, Houyu Ma, Yujuan Wu, Yongxiang Hu, Yue Liu, Guisen Liu, Jian Wang, Xiaoqin Zeng
Summary: We quantitatively measured the twinning shear of three twinning modes at an atomic level, allowing us to determine the character of elementary twinning dislocation. These findings not only clarify the twinning mechanisms but also provide a method to determine other complex shear mechanisms at an atomic level.
Article
Engineering, Mechanical
Mingyu Gong, Dongyue Xie, Tianyi Sun, Xinghang Zhang, Lin Shao, Jian Wang
Summary: A microstructure- and temperature-dependent crystal plasticity model is used to understand the mechanical properties of FeCrAl alloys. The model considers the temperature-dependent frictional resistance and microstructure-dependent irradiation hardening. The results provide insights into the thermo-mechanical behavior of unirradiated/irradiated FeCrAl alloys.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Multidisciplinary Sciences
John P. Hirth, Dongyue Xie, Greg Hirth, Jian Wang
Summary: Type II and IV twins with irrational twin boundaries were studied in plagioclase crystals using high-resolution transmission electron microscopy. It was observed that the twin boundaries relaxed and formed rational facets separated by disconnections, similar to what was seen in NiTi. The topological model (TM) was required for precise theoretical prediction of the orientation of the Type II/IV twin plane, and predictions were also made for other types of twins. The faceting process provided a challenging test for the TM, but the analysis showed excellent agreement with the observations.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Nanoscience & Nanotechnology
Tian Zhang, Jie Tang, Shudong He, Fulin Jiang, Dingfa Fu, Jie Teng, Jian Wang
Summary: We experimentally investigated the microstructure evolution and strengthening behaviors of three cold-worked austenitic steels that deform via dislocations, twinning, and stacking faults. It was found that the development of stacking faults and twins acts as kinematical barriers for dislocation motion, which is influenced by stacking fault energy and accumulated dislocations. These factors accelerate the dislocation storage rate, strengthen the alloys, and develop a high strain hardening rate. Therefore, we proposed a nonadditive strengthening equation by combining the dislocation-based two-internal-variable model coupled with kinematical barriers to rationalize the experimental observations.
SCRIPTA MATERIALIA
(2023)
Review
Chemistry, Physical
Bingqiang Wei, Lin Li, Lin Shao, Jian Wang
Summary: Crystalline metals have good deformability but poor strength and irradiation tolerance, while amorphous materials have poor deformability but high strength and good irradiation tolerance. By refining characteristic size, the flow strength of crystalline metals and the deformability of amorphous materials can be enhanced. This leads to enhanced strength and improved plastic flow stability in crystalline-amorphous nanostructures. The high-density interfaces in these nanostructures can trap radiation-induced defects and accommodate free volume fluctuation. This article reviews various crystalline-amorphous nanocomposites and their synthesis, deformation behaviors, and multiscale materials modelling.
Article
Materials Science, Multidisciplinary
Jian Song, Songsong Yao, Quan Li, Jiamiao Ni, Zhuoxin Yan, Kunming Yang, Guisen Liu, Yue Liu, Jian Wang
Summary: Engineering the surface orientation of fcc metals to the {111} plane can enhance their oxidation resistance. In this study, a reconstructed surface layer with the {111} orientation was observed on high-temperature deposited Gr/{001} Cu surface. A surface melting-solidification mechanism dominated by Gr/Cu interfacial energy and promoted by high-temperature surface melting was proposed to explain the surface reconstruction process. These findings suggest a possible strategy to enhance the surface properties of fcc metals through engineering surface crystallography.
Article
Engineering, Mechanical
Yucong Gu, Jonathan Cappola, Jian Wang, Lin Li
Summary: This study investigates the yielding behavior of heterogeneous metallic glasses (MGs) by varying the spatial correlation and standard deviation of local shear moduli associated with clustering atoms on the nanoscale. Through computations and observations, the study proposes a Hall-Petch-like relationship where the yield stress of MGs scales inversely with the square root of the spatial correlation length. The results provide insights into the structure-property relationship of MGs and have important implications for the design of nanoscale MGs with tunable properties.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Nanoscience & Nanotechnology
Arkajit Ghosh, Wenqian Wu, Bibhu Prasad Sahu, Jian Wang, Amit Misra
Summary: Nano-scale eutectics, such as rapid solidified Al-Si, exhibit enhanced yield strength and strain hardening but limited plasticity. In this study, fully eutectic Al-Si microstructures with heavily twinned Si nano-fibers were synthesized using laser rapid solidification and chemical modification. These microstructures showed high hardness and stable plastic flow, with a mechanism of partial dislocation-mediated plasticity observed in the deformed Si(Sr) fibers. The findings provide insights into the plasticity mechanisms of nano-eutectic materials.
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)
