Article
Nanoscience & Nanotechnology
Hyogeon Kim, Hyesu Ha, Jungsub Lee, Sujung Son, Hyoung Seop Kim, Hyokyung Sung, Jae Bok Seol, Jung Gi Kim
Summary: High-pressure torsion processing induces significant mechanical property enhancement and complex microstructural changes in aluminum 7075 alloys, including grain refinement, solute migration, and strength enhancement through precipitation hardening and dissolution of brittle phases.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Juhee Oh, Sangeun Park, Hyo Ju Bae, Sujung Son, Hyoung Seop Kim, Jae Bok Seol, Hyokyung Sung, Jung Gi Kim
Summary: Elevated temperature high-pressure torsion processing can alter the microstructure of aluminum alloys and enhance their mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Construction & Building Technology
Irina Volokitina, Bayan Sapargaliyeva, Aktolkyn Agabekova, Samal Syrlybekkyzy, Andrey Volokitin, Lazzat Nurshakhanova, Farida Nurbaeva, Alexandr Kolesnikov, Gulzhan Sabyrbayeva, Aizhan Izbassar, Olga Kolesnikova, Yury Liseitsev, Svetlana Vavrenyuk
Summary: This study investigates the evolution of microstructure and mechanical properties of bimetallic aluminum-copper rods during Equal channel angular pressing-drawing (ECAP-drawing). The results show the formation of an ultrafine-grained copper-aluminum composite with a gradient structure through ECAP-drawing. The microhardness of the copper shell increased from 57 to 165, and the hardness of the aluminum rod increased from 25 to 75 HV. Tensile test analysis reveals a 2-fold increase in strength properties while a nearly 2-fold decrease in plastic properties, which still remain suitable for further applications.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xiang Chen, Weizhang Wang, Hong Yang, Guangsheng Huang, Dabiao Xia, Aitao Tang, Bin Jiang, Heung Nam Han, Fusheng Pan
Summary: This paper fabricates ultrafine-grained pure aluminum through heavy extrusion. Different annealing times are applied to tailor heterostructures, aiming to achieve a balance between strength and ductility. The microstructure analysis reveals the formation of heterostructures with recrystallized coarse grains, retained ultrafine grains, and coarsening banded structure. Tensile tests show that the 5-8 min annealed samples have a reasonable strength-ductility balance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Koji Hagihara, Toko Tokunaga, Katsuaki Nishiura, Shohei Uemichi, Shuhei Ohsawa
Summary: Controlling the morphology of kink bands can effectively improve the strength and ductility of aluminum alloys. The microstructure plays a significant role in the formation of kink bands and the mechanical properties of the material. By varying the microstructural control, the role of the deformation kink band can be changed from a fracture mode to a deformation mode, leading to a large increase in yield stress while maintaining ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Jinming Li, Yuhua Huang, Yuqi Zhou, Fulong Zhu
Summary: Molecular dynamics simulations were used to investigate the repeated nanoindentation on aluminum substrate with varying thicknesses of boron nitride nanosheet coating. The study reveals that the hardness of the substrate increases with coating thickness. The pressure area of the aluminum substrate also increases with coating thickness. The coating force causes more atoms to move along the loading direction, leading to substrate slip and severe atomic strain. However, some aluminum atoms are able to elastically recover after unloading, despite being severely deformed. After multiple loadings, elastic deformations transition into plastic deformations, possibly accompanied by lattice structure destruction and the presence of amorphous atoms.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Omar Alejandro Velazquez-Carrillo, Francisco Alfredo Garcia-Pastor
Summary: Accumulative roll bonding (ARB) is an SPD technique widely used to enhance mechanical properties in metals, especially precipitation hardened alloys like aluminum 7075. Materials processed by ARB, such as Al-7075, show significant improvements in yield and ultimate strength, with thermal stability of the microstructure being a key consideration for high-strength applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Mechanics
Robert S. Hansen, David W. Kamerman, Philip G. Petersen, Fabiola Cappia
Summary: The ring tension test (RTT) is a complex and sensitive experimental method for testing anisotropic materials, which has been lacking in understanding the impact of experimental uncertainties. In this study, a finite element-based investigation of the RTT is conducted, comparing different configurations and studying the sensitivity of measured strengths to non-ideal conditions and experimental uncertainties. A mechanics-based approach to correcting raw data is proposed, resulting in highly accurate material strength measurements.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Editorial Material
Chemistry, Physical
Roland E. Loge
Summary: Dynamic recrystallization is a technique that refines grain structures in metals and adjusts their properties. Confining recrystallization within prior nanoscale twinning allows for achieving exceptional grain refinement.
Article
Engineering, Marine
FeiHong Yun, HongWei Chai, Gang Wang, XiangYu Wang, Peng Jia, LiQuan Wang, Ming Ju, Yang Jiang, MingXuan Zhang
Summary: This paper innovatively describes the calculation method of overall stress of the pipe after reel-laying and clarifies the influence of plastic deformation on the performance strengthening. The accuracy of the theoretical results is verified through comparative tests. The results show that plastic deformation improves the performance of the pipe material, enhancing its tensile, compression, bending, and torsion resistance. The maximum potential increase is theoretically 45.16%, and experimental measurements have shown conformity with theoretical values.
Article
Metallurgy & Metallurgical Engineering
Oleg Sitdikov, Elena Avtokratova, Oksana Latypova, Michael Markushev
Summary: This study compared the structure and mechanical behavior of an Al-5Mg-0.18Mn-0.25c-0.08Zr-0.01Fe-0.01Si alloy under different deformation processes, showing that MIF resulted in ultrafine-grained structure and significantly enhanced strength and ductility after WR and CR. ECAP achieved more profound grain refinement but equal properties with MIF after WR, while CR following ECAP exhibited higher strengthening and slightly better superplastic behavior compared to MIF.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Materials Science, Multidisciplinary
Maryam Mehdizade, Ali Reza Eivani, Mansour Soltanieh
Summary: This study investigated the effects of severe plastic deformation and thermal treatment on the nanostructure and properties of the anodic oxide layer of AA6063. The results showed that increasing deformation improved the order and uniformity of the Al2O3 layer, leading to increased micro hardness and brightness of coatings and decreased roughness and porosity. The application of aging treatment, however, resulted in reduced ordering, uniformity, and brightness of the anodic layer.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Construction & Building Technology
Irina Volokitina, Bayan Sapargaliyeva, Aktolkyn Agabekova, Andrey Volokitin, Samal Syrlybekkyzy, Alexandr Kolesnikov, Gulnara Ulyeva, Almas Yerzhanov, Pavel Kozlov
Summary: This study investigates the impact of a novel processing technology on the microstructure and mechanical properties of bimetallic aluminum-copper wire. This technology enables the production of a new generation of wire for both new overhead lines and the reconstruction of existing ones. The study utilized various techniques such as transmission electron microscope, EBSD analysis, tensile tests, microhardness, and electrical conductivity measurements. The findings reveal the formation of an ultrafine-grained copper-aluminum composite with a gradient structure during the ECAP-drawing process. Annealing after straining at 200 degrees Celsius enhances the interfacial connection strength between copper and aluminum, resulting in improved strength characteristics of the bimetallic wire. The utilization of such wire in overhead transmission lines allows for reduced cross-section and wind loads, while maintaining or increasing strength without adding extra weight.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Dong Sun, Shuyong Jiang, Xiaodong Xing, Bingyao Yan, Junbo Yu, Yanqiu Zhang
Summary: Local canning compression is applied to equiatomic NiTi shape memory alloy with complete B19' martensite, leading to different grain sizes after annealing at 300, 450 and 600 degrees C. The highest elastic limit is achieved under annealing at 300 degrees C, while the highest yield stress and good plasticity are observed under annealing at 450 degrees C. Annealing at 600 degrees C results in a relatively low yield stress but still higher than the as-received NiTi SMA, with high plasticity as well.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Grzegorz Stradomski, Dariusz Rydz, Tomasz Garstka, Michal Palega, Tomasz Dyl, Arkadiusz Szarek, Justyna Lukomska Szarek, Tomasz Dembiczak
Summary: This paper presents the results of research on the influence of kinetic asymmetry of work rolls on structural changes in hot-rolled bimetallic sheet metals. The research conducted showed that introducing asymmetric conditions to the rolling process results in finer grain fragmentation in the hard layer and does not negatively affect microstructural changes in the soft layer.
Article
Chemistry, Multidisciplinary
Hao Tian, Yanling He, Qinglong Zhao, Jiaxin Li, Xiji Shao, Zhe Zhang, Xiang Huang, Chao Lu, Kedong Wang, Qichuan Jiang, A. M. C. Ng, Hu Xu, S. Y. Tong
Summary: The new strategy avoids conflicting tasks and enhances the efficiency of bifunctional catalysts by directly obtaining OH from water to facilitate CO conversion on a weakly reactive substrate.
Article
Nanoscience & Nanotechnology
Xiao Liu, Zhenwei Ji, Yegang Song, Bao Wang, Yunlong Zhu, Feng Qiu, Qinglong Zhao, Qichuan Jiang
Summary: This study investigated the synergistic effects of TiC nanoparticles and cold rolling on the microstructure and mechanical properties of Al-Cu strips fabricated by twin-roll casting (TRC). The addition of NPs effectively promoted the transition of columnar-to-equiaxed structure and refined the grain structure, while the cold rolling further refined the grains and accelerated the dissolution of second phases. The precipitation kinetics was greatly promoted during the aging treatment, resulting in improved yield strength, ultimate tensile strength, and uniform elongation of the TRC strips.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Industrial
Xiao Liu, Qinglong Zhao, Zhenwei Ji, Bao Wang, Yunlong Zhu, Qichuan Jiang
Summary: The addition of TiC nanoparticles in Al-Cu strips was found to refine grain structure, increase Cu concentration, and effectively mitigate center macro-segregation, resulting in improved mechanical properties and formability of the alloy strips.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Xiao Liu, Zhenglu Liu, Litao Zhang, Qinglong Zhao, Qichuan Jiang
Summary: The addition of trace TiC nanoparticles in Ni-Fe based cast superalloy has been found to effectively refine the microstructure, improve the tensile properties, and enhance the mechanical performance at room and elevated temperatures. This study offers a new strategy for enhancing the mechanical properties of cast superalloys fabricated by conventional casting processes.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Multidisciplinary
T. Manik, H. M. Asadkandi, B. Holmedal
Summary: A new stable return-mapping algorithm is proposed for crystal-plasticity solutions, which uses a regularized yield surface with very large exponents. The algorithm achieves good numerical stability and is implemented as a fast and stable implicit method in finite element software for simulations of both single crystals and polycrystalline materials.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Jiaming Cao, Bao Wang, Xiao Liu, Ting Chang, Qinglong Zhao
Summary: This study investigates the Al-5Cu-0.8Mn-0.1Zr strips produced by a twin-roll-casting process. It was found that the central segregation in the alloy strip, which is a mixture of Al2Cu and Al20Cu2Mn3 eutectic phases, can be eliminated by introducing nano-sized TiC/TiB2 particles. The addition of nanoparticles also improves the tensile strength of the T6-treated alloy.
Article
Materials Science, Multidisciplinary
Hua Zhiting, Shan Tongtong, Geng Run, Zhao Qinglong
Summary: The hot-plate rolling process can achieve optimal strength-ductility for in-situ nano-TiCP/Al-Mg-Si composites. The mechanical properties of the composites were significantly improved by hot-plate rolling and T6 heat treatment.
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
(2022)
Article
Materials Science, Multidisciplinary
Sohail Shah, Akash Gopal, Elisabeth Thronsen, Constantinos Hatzoglou, Bjorn Holmedal
Summary: Comparison between natural and artificial ageing treatments with cyclic deformation ageing at room temperature revealed different fracture behaviors and mechanical responses for Al-Zn-Mg alloys. Cyclic ageing resulted in early slant shear fracture, while natural ageing improved mechanical properties.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Bao Wang, Xiao Liu, Yunlong Zhu, Chunfeng Ma, Feng Qiu, Qinglong Zhao, Qichuan Jiang
Summary: Two types of Al-Mg-Si strips with different Mg/Si ratios were fabricated by vertical-type twin-roll casting (TRC), and the effect on microstructure and tensile properties was investigated. A low Mg/Si ratio promoted precipitation during aging, resulting in increased yield strength but decreased uniform elongation. The TRC strips exhibited heterogeneous structure with different solidification paths for different Mg/Si ratios.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Shengwei Sun, Litao Zhang, Xiao Liu, Wei Jin, Qichuan Jiang, Qinglong Zhao
Summary: This work investigated the influence of TiC nanoparticles on the microstructure and corrosion performance of cast superalloy K4169. The results showed that the addition of 0.02 wt.% TiC can reduce the eutectic Laves phase and refine the as-cast grain size, as well as suppress the formation of delta phases (Ni3Nb) during heat treatments. Therefore, the K4169 superalloy with TiC nanoparticles exhibits better corrosion resistance in sulfuric acid solution.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
Jianbin Xu, Lei Liu, Odd Sture Hopperstad, Bjorn Holmedal, Tomas Manik, Knut Marthinsen
Summary: In this study, a novel method is proposed to quantitatively analyze localized deformation bands exhibiting the Portevin-Le Chatelier effect. The method introduces a multi-strain-jump function to capture the experimentally obtained strain profile. The approach allows for automatic extraction of band strain and enables the linking of band characteristics with local material properties.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Christoph M. Hell, Bjorn Holmedal, Ruben Bjorge, Calin D. Marioara, Randi Holmestad
Summary: In this study, the origin of a double-peak during artificial aging of an EN-AW 6082 is analyzed using (S)TEM. The TEM data is used in a strength model to explore the origin and broader strength plateau of the double-peak. It is concluded that the first peak is caused by wide and high-density p-type precipitates, while the second peak is due to a broader size distribution of precipitates of the same type. The second peak is maintained by long precipitates of a hybrid type with overaged phases, counteracting the strength loss from Ostwald ripening.
Article
Chemistry, Physical
Bao Wang, Zhenwei Ji, Feng Qiu, Qinglong Zhao, Qichuan Jiang
Summary: In this study, Al-Mn-Si and TiC-TiB2/Al-Mn-Si strips were produced using vertical-type twin-roll casting and their microstructure and mechanical properties were investigated. The introduction of TiC-TiB2 nanoparticles resulted in uniform and fine grain structures, with a greater effect on the surface grains compared to the central grains. The TiC-TiB2 particles eliminated the central segregation of the strips and improved their mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
E. Thronsen, S. Shah, C. Hatzoglou, C. D. Marioara, S. Wenner, S. J. Andersen, B. Holmedal, R. Holmestad
Summary: The evolution of early-stage precipitates in a 7003 aluminium alloy was investigated through artificial ageing. It was found that after 10 minutes of artificial ageing, the hardness of the precipitates decreased and their size increased, indicating the dissolution of the Guinier-Preston (GP) zones. Subsequently, as the ageing time increased, the hardness gradually increased and new precipitate phases appeared. Atomically resolved scanning transmission electron microscopy images of the disputed T' phase were also presented.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Bao Wang, Qinglong Zhao, Feng Qiu, Qichuan Jiang
Summary: In this study, the effect of Mg and Si contents on central segregation susceptibility was investigated by fabricating Al-Mg-Si alloys with different compositions using a vertical-type twin-roll caster. The enrichment of eutectic Si in the central region, leading to severe central segregation, was observed in alloys that undergo a eutectic reaction to form Si due to the low reaction temperature of eutectic Si. Alloys with higher ⠁⠁⠁dT/dof1/2s thorn values showed agglomeration of eutectic phases, and the width of central segregation increased with the increase in Mg and Si contents due to the increase in the proportion of nearequiaxed grains in the central region. The introduction of TiC nanoparticles mitigated the central segregation band by controlling solute diffusion through a fine nearequiaxed grain structure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(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)
