Article
Chemistry, Physical
H. Chang, T. W. Zhang, S. G. Ma, D. Zhao, T. X. Bai, K. Wang, Z. Q. Li, Z. H. Wang
Summary: CrCoNiSiAlx medium entropy alloys exhibited improved strength and strain hardening capacity by minor addition of Si and Al elements, forming a specific precipitation structure. The performance of the alloy surpasses other advanced steels and alloys. The precipitation hardening mechanisms and deformation twins together enhance the strength and ductility of the alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Jijie Yang, Chaojie Liang, Chenglei Wang, Jian Huang, Bing Qiu, Mulin Liang, Weijie Liu, Yingguang Xie, Kexiang Zhang, Shengfeng Zhou
Summary: In this study, the phase structure, microstructure, and mechanical properties of high entropy alloys (HEAs) were investigated. It was found that the addition of refractory elements did not change the phase structure of the alloys but improved their strength. Among them, the alloy with Ta element exhibited the best comprehensive mechanical properties and showed excellent strength-ductility combination.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Tangqing Cao, Qian Zhang, Liang Wang, Lu Wang, Yao Xiao, Jiahao Yao, Huaiyi Liu, Yang Ren, Jun Liang, Yunfei Xue, Xiaoyan Li
Summary: High-entropy alloys (HEAs) possess unique microstructures and chemical compositions, resulting in remarkable mechanical properties. In this study, the mechanical behaviors and deformation mechanisms of CoCrFeNi HEAs under dynamic loading were investigated through experiments and simulations. The results showed significant strain rate sensitivity and strain-hardening capability of CoCrFeNi HEAs at high strain rates. The findings shed light on the design and fabrication of HEAs with excellent dynamic mechanical properties.
Article
Nanoscience & Nanotechnology
M. Wang, Z. L. Ma, Z. Q. Xu, X. W. Cheng
Summary: For refractory high-entropy alloys VxNbMoTa, increasing the V concentration can lead to improved yield strength and ductility at room temperature. The fracture morphologies of VxNbMoTa also change with increasing V content, transitioning from intergranular to transgranular. Additionally, high vanadium alloys show better ductility due to refined grains and reduced impurities and brittle compounds at the grain boundary, as revealed by atom probe tomography.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Danni Yang, Yong Liu, Nan Qu, Tianyi Han, Mingqing Liao, Zhonghong Lai, Jingchuan Zhu
Summary: The effect of fabrication methods on microstructures, mechanical properties, and strengthening mechanisms of high-entropy alloys was systematically studied. Different fabrication methods have little effect on the main phase compositions of Fe0.25CrNiAl MEA, but significant impacts on microstructures, mechanical properties, and strengthening mechanisms were observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Wei Jiang, Shengyun Yuan, Yang Cao, Yong Zhang, Yonghao Zhao
Summary: The Ni2Co1Fe1V0.5Mo0.2 medium-entropy alloy shows remarkable mechanical properties at 800 degrees C with secondary strain hardening during tensile deformation, where the high density of dislocation forests and solute atmospheres lead to increased strain hardening rate. The dominant deformation mechanism shifts from forest dislocation cutting to dislocation cross-slip at 800 degrees C, while dynamic-strain aging poses plastic instability and deteriorates the strain hardening of the alloy.
Article
Chemistry, Physical
Zhongsheng Yang, Zhijun Wang, Bojing Guo, Rongtian Cao, Qingfeng Wu, Dingcong Cui, Kaiwei Zhang, Junjie Li, Jincheng Wang, Feng He
Summary: This study investigated the effects of pre-strain degree on the precipitation behavior of Ni2CoCrFeTi0.18Al0.12 high-entropy alloys. The results revealed a non-monotonous effect of pre-strain on the precipitation behavior, where low pre-strain can accelerate the precipitation while high pre-strain weakens this effect. Additionally, pre-strain can control the precipitation strengthening, dislocation strengthening, and grain boundary strengthening of high-entropy alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Yu Yin, Wangrui Ren, Qiyang Tan, Houwen Chen, Han Huang, Ming-Xing Zhang
Summary: A cost-effective high entropy alloy with a single face-centred cubic matrix is developed to enhance the application potential of cryogenic high entropy alloys. It exhibits temperature-dependent tensile properties, with increased yield strength, tensile strength, and ductility at lower temperatures. The alloy stands out with its relatively low cost, superior strain hardening capacity, and exceptional strength-ductility synergy at 77K, making it a promising material candidate for cryogenic applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Chengbin Wei, Yiping Lu, Tongmin Wang, Peter K. Liaw
Summary: A series of non-equiatomic Co29Cr29Fe29Ni13-xVx (x = 0, 0.5, 3, and 5) high-entropy alloys with fully recrystallized microstructures were prepared by rolling and annealing. The addition of V retards the recrystallization and grain growth behavior. The alloy exhibits ultrahigh yield strengths and considerable tensile ductility at a cryogenic temperature, making it a promising material for industrial applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Xuehui Yan, Peter K. Liaw, Yong Zhang
Summary: Extraordinary strength and good tensile ductility are achieved in (Zr0.5Ti0.35Nb0.15)(100-x)Al-x alloys at room temperature. The relatively low densities exhibited in these alloys make them attractive structural materials. Designing nanoprecipitates and diversifying dislocation motions play key roles in achieving such breakthrough.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Shuang Qin, Muxin Yang, Yanke Liu, Ping Jiang, Jitang Fan, Fuping Yuan, Xiaolei Wu
Summary: The dynamic shear responses of a high entropy alloy with heterogeneous grain structure and dual nanoprecipitates were investigated. The alloy exhibited unprecedented synergy of dynamic shear strength and ductility, outperforming other metals and alloys. The excellent properties were attributed to factors such as grain refinement, dislocations hardening, and precipitation hardening. Furthermore, aged samples with a higher volume fraction of nanoprecipitates displayed even better dynamic shear properties due to triggered planar dislocation slip, increased dislocation density, and enhanced precipitation hardening.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Laura Rosenkranz, Michael Feuerbacher, Christian Gadelmeier, Felix Schleifer, Uwe Glatzel
Summary: In the equiatomic hexagonal close packed high entropy alloy Ho-Dy-Y-Gd-Tb, a discrepancy known as the Gibbs paradox exists between the similarity of the rare earth elements and the calculated configurational entropy. This study investigates equiatomic alloys made from one to five rare earth elements to evaluate this paradox in terms of tensile behavior. The results show that there is no direct correlation between tensile behavior and configurational entropy in this alloy system.
Article
Chemistry, Physical
Puchang Cui, Wei Wang, Zhisheng Nong, Zhonghong Lai, Yong Liu, Jingchuan Zhu
Summary: High-entropy alloys have gained attention as potential materials for future high-temperature structural superalloys. The role of the Cr element in microstructure and properties has been revealed, showing significant improvement in strength and ductility. The density and melting point of the alloys increase with higher Cr content. The mechanical properties, including compressive strength and plasticity, are optimized, and the high-temperature mechanical properties are greatly enhanced.
Article
Chemistry, Physical
Yufang Zhao, Yaqiang Wang, Kai Wu, Jinyu Zhang, Gang Liu, Jun Sun
Summary: Introducing heterogeneous interfaces by constructing laminated structure is a promising approach to achieve controllable strengthening behavior of high entropy alloys. In this study, the microstructural evolution and mechanical properties of Ni/Fe50Mn30Co10Ni10 nanolaminates were systematically investigated. The nanoindentation hardness of the nanolaminates initially increased and then decreased with decreasing layer thickness, reaching a maximum value at around 25 nm. The transformation of constraining barrier for dislocation slipping from the heterogeneous interfaces to columnar grain boundaries was identified as the cause for this behavior. The interfacial structure transformed from incoherent to completely coherent below 25 nm, and both constituent layers contributed significantly to the plastic deformation. The h-dependent mechanical behavior can be explained by the co-deformation of constituent layers and the structural evolution of the interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
C. Ren, K. Sun, Y. F. Jia, N. Z. Zhang, Y. D. Jia, G. Wang
Summary: The study examined the microstructural evolution and mechanical properties of (FeNi)67Cr15Mn10-xAl4Ti4Mox high entropy alloys. It was found that the substitution of Mn by Mo introduced hard a precipitates into the matrix and significantly refined the grains, leading to the increase in yield strength. However, the formation of the hard a precipitates hindered the work hardening process and decreased the plasticity, resulting in a decrease in elongation at break. The highest ultimate tensile stress was obtained at x = 4, where the fracture morphology changed from a coarse grain morphology to a typical brittle fracture. Therefore, (FeNi)67Cr15Mn6Al4Ti4Mo4 showed the optimal mechanical properties overall.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Instruments & Instrumentation
Kewei Wu, Xuewei Jia, Tao Yang, Mengzhao Li, Wei Wang, Mei Zhao, Zhijun Liang, Joao Guimaraes da Costa, Yunyun Fan, Han Cui, Alissa Howard, Gregor Kramberger, Xin Shi, Yuekun Heng, Yuhang Tan, Bo Liu, Yuan Feng, Shuqi Li, Mengran Li, Chengjun Yu, Xuan Yang, Mingjie Zhai, Gaobo Xu, Gangping Yan, Qionghua Zhai, Mingzheng Ding, Jun Luo, Huaxiang Yin, Junfeng Li
Summary: The low gain avalanche detectors (LGADs) provide excellent time resolution of about 30 ps for Minimum Ionizing Particles (MIP) due to their thin sensors with fast charge collection and internal gain. However, the upgraded Large Hadron Collider (LHC) in 2028 will cause radiation damage and deterioration of LGAD performance due to high collision and particle rates. To mitigate such effects, the Institute of High Energy Physics (IHEP), Chinese Academy of Sciences (CAS) has developed a process to enrich the gain layer of LGADs with carbon, reducing the acceptor removal effect caused by radiation. These modified LGAD sensors have demonstrated adequate charge collection (>4 fC) and time resolution (<50 ps) at voltages <400 V, even after exposure to a maximum fluence of 2.5 x 10(15) neutron equivalent fluence of 1 MeV at ATLAS High Granularity Timing Detector (HGTD).
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Energy & Fuels
Qiusheng Ye, Chengwu Li, Tao Yang, Yilin Wang, Zhenfei Li, Yifan Yin
Summary: This study investigates the desorption and diffusion of methane in coal seams using an experimental system, and finds that the desorption process is a heat absorption and cooling process influenced by equilibrium pressure and the particle size of the coal samples. The results have important implications for accurately measuring coal bed methane content and preventing and controlling coal mine gas disasters.
Article
Materials Science, Coatings & Films
Zhihao Li, Linjiang Chai, Lan Qi, Yueyuan Wang, Yuanzhuo Liu, Tao Yang, Hao Wang, Ning Guo, Yuxiang Zhao
Summary: In this study, two Al-Cr-Ti ternary alloy coatings were fabricated on a Ti-4Al-2V alloy substrate using a pulsed laser cladding method. The microstructure characteristics of the coatings were revealed using various characterization methods, with their hardnesses and wear rates measured. The results showed that the coatings had a body-centered cubic phase related to non-equilibrium solidification and sluggish diffusion of alloying elements. The enhanced performance of the coatings was attributed to joint strengthening from strong solid solution and lattice distortion, as well as phase structure differences from the substrate induced by Al/Cr.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Polymer Science
Peng Zhang, Yadong Dai, Hansong Liu, Botao Dong, Yilun Yao, Jinsong Sun, Tao Yang, Xiangyu Zhong, Jianwen Bao
Summary: A molecular model of polyimide (PI) was constructed to compare the performance of PIs with different structures. Molecular simulations were conducted to investigate the structure, prepolymer melt viscosity, and glass-transition temperature (T-g) of cross-linked PI resin. The results suggest that benzene ring and polyene-type cross-linked structures dominate the properties of the PIs. The findings provide important reference for PI design and have significant value in improving the efficiency of new product development.
Article
Nanoscience & Nanotechnology
Zhichao Hao, Gen Liu, Lin Ren, Jiangchen Liu, Chuanzi Liu, Tao Yang, Xiangnan Wu, Xinchun Zhang, Ling Yang, Juan Xia, Weichang Li
Summary: Developing an effective treatment strategy for diabetic wound healing is a major challenge in clinical practice due to multidrug-resistant bacterial infections, angiopathy, and oxidative damage. This study designed a self-healing hydrogel with interpenetrating networks formed by multiple-dynamic bond cross-linking. The hydrogel showed excellent autonomous healing mediated by reversible breakage of Schiff bonds and reinforced by other noncovalent interactions. Incorporation of cathelicidin LL-37 in the hydrogel significantly promoted diabetic wound healing by various mechanisms. Therefore, this study provides an effective and safe strategy for diabetic wound treatment in clinical applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Hao Jie Kong, Tao Yang, Rong Chen, Zengbao Jiao, Tianlong Zhang, Boxuan Cao, Junhua Luan, Shaofei Liu, Anding Wang, Jacob Chih-Ching Huang, Xun-Li Wang, Chain Tsuan Liu
Summary: High-performance, low-cost structural materials with nanoscale precipitations are essential for advanced industry systems. Traditional nucleation mechanisms have limitations in achieving fine dispersion of nanoscale precipitates. However, a revolutionary approach of ultra-strong iron-based alloys has successfully resolved these issues through non-classical nanoscale precipitations and multi-elemental partitioning. This strategy allows for control of nanoscale precipitates with low solute supersaturation, resulting in enhanced strength and ductility, superior fabricability, and post-weld properties.
Article
Materials Science, Multidisciplinary
Long Jin, Zhaoyu Li, Haichao Huang, Xiang Chu, Weili Deng, Jieling Zhang, Yong Ao, Tianpei Xu, Guo Tian, Tao Yang, Lihua Tang, Weiqing Yang
Summary: This study proposes an experimental approach to regulate MXene fluorine groups by alkalization to validate its performance enhancement in triboelectric nanogenerator (TENG). It is found that compared with alkalized MXene-based TENGs, MXene-based TENG achieves significant enhancement in open-circuit voltage, short-circuit current, and output power, indicating its potential for flexible sensing and energy harvesting.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Y. L. Zhaoa, F. L. Meng, T. Yang, J. H. Luan, S. F. Liu, G. M. Yeli, W. T. Lin, W. H. Liu, X. J. Liu, C. T. Liu, J. J. Kai
Summary: In this study, a novel L1 2 -strengthened HEA alloy was irradiated with He ions, and the microstructural stability and radiation-induced segregation were investigated using TEM and APT. The results showed that the irradiated HEA exhibited improved irradiation resistance and reduced bubble size, attributed to the trapping efficiency of the precipitate/matrix interface and the interface's enhanced capability for damage elimination. The irradiation-induced diffusion and precipitation dissolution and re-precipitation also contributed to the alloy's radiation tolerance and self-healing effect.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
T. H. Chou, W. P. Li, H. W. Chang, B. X. Cao, J. H. Luan, J. C. Huang, T. Yang
Summary: Hetero-grain/precipitation engineering was used to improve the mechanical properties of an alloy over a wide temperature range. By introducing partial recrystallization and L12 nanoprecipitation, a heterogeneous microstructure was achieved in a CoCrNi-based medium entropy alloy. This alloy demonstrated an ultrahigh tensile strength of 1.5 GPa at 500 degrees C and maintained a tensile strength above 1.1 GPa at 600 degrees C. Furthermore, it exhibited excellent elongation properties at temperatures ranging from -196 degrees C to 700 degrees C, overcoming temperature-dependent embrittlement commonly observed in materials with equiaxed grain structures. The superior combination of strength and ductility at elevated temperatures was attributed to the stable deformed grains and pronounced planar defects present in the alloy.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Y. L. Zhao, W. C. Xiao, Z. K. Zhao, Q. Li, J. Cui, J. H. Luan, C. T. Liu, P. K. Liaw, T. Yang
Summary: We designed a Co-rich chemically complex intermetallic alloy with an L12-type ordered structure, which possesses an ultrahigh tensile strength and substantial ductility, outperforming most Co-rich intermetallic alloys.
SCRIPTA MATERIALIA
(2023)
Article
Food Science & Technology
Shenglan Lu, Xueying Li, Xunran Wei, Caihuan Huang, Jie Zheng, Shiyi Ou, Tao Yang, Fu Liu
Summary: The study fabricated and characterized a natural quercetin self-stabilizing Pickering emulsion. The antisolvent treatment was found to improve the emulsification performance of quercetin particles. The emulsion showed good storage stability and the particle size varied with particle concentration and oil phase ratio. This study highlights the potential application of natural quercetin in the development of functional emulsion foods.
Letter
Materials Science, Multidisciplinary
Bo Xiao, Jixun Zhang, Shaofei Liu, Yilu Zhao, Lianyong Xu, C. T. Liu, Tao Yang
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Liming Yang, Tao Yang, Enhui Wang, Xiangtao Yu, Kang Wang, Zhentao Du, Sheng Cao, Kuo-Chih Chou, Xinmei Hou
Summary: In this study, hierarchical nanosheets of NiCoP@FeNi LDH were prepared on nickel foam using a hydrothermal-phosphorization-electrodeposition process as non-noble metal electrocatalysts for hydrogen production at high current density (HCD). The NiCoP@FeNi LDH/NF showed overpotentials of only 195 and 230 mV for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, reaching 10 0 0 mA cm-2. For overall water splitting, only 1.70 V was required at 10 0 0 mA cm-2. This work provides valuable insight for industrial-scale hydrogen production at HCD.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Y. H. Zhou, S. F. Liu, D. Chen, Q. F. Wu, B. Xiao, F. He, Z. J. Wang, T. Yang, J. J. Kai
Summary: In this study, the irradiation behavior of two types of EHEAs (Fe42 and Fe47) with different phase designs was investigated using He ion irradiation. The results showed that the phase composition of the alloys remained relatively stable up to a certain level of irradiation, but the long-range order of the B2 phase in Fe42 alloy was disrupted to a greater extent. It was also found that the Fe47 alloy with an ordered B2 phase exhibited better radiation resistance, with smaller and fewer helium bubbles formed. This work provides a new strategy for designing EHEAs with excellent resistance to irradiation at elevated temperatures.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jianyang Zhang, Zhankun Zhao, Qian Li, Junhua Luan, Chain-Tsuan Liu, Yilu Zhao, Tao Yang
Summary: The unique bifunctionality of L12-structured nanoprecipitates in a FeCoNiAlTi high entropy alloy is unveiled, which allows for an increase in tensile strength and ductility. The introduction of dense coherent L12-type nanoprecipitates stabilizes the face-centered cubic matrix, promoting microbands-induced plasticity associated with stress-induced martensite transformation. This leads to significantly improved work hardening capability and excellent plastic deformation stability at a high-strength level.
ADVANCED POWDER MATERIALS
(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)
