Article
Materials Science, Multidisciplinary
Wenyue Song, Jiayi He, Hanjie Pan, Zhigao Yu, Jiali Cao, Wenbing Fan, Hongya Yu, Zhongwu Liu
Summary: Under certain conditions, the diffusion efficiency of heavy rare earth elements along the a-axis can be comparable to that along the c-axis. Alloying can enhance the diffusion along the a-axis, resulting in increased coercivity and reduced total consumption.
Article
Materials Science, Multidisciplinary
Z. Wang, T. T. Sasaki, Y. Une, T. Ohkubo, K. Hono
Summary: Record-breaking high coercivity is achieved in Dy-free sintered magnets by separately diffusing Dy70Cu30 and Pr68Cu32 eutectic alloys. The low Dy content sample exhibits a high coercivity of 2.8 T and an excellent temperature coefficient of coercivity. The unique presence of a uniform Dy-rich shell and enriched Pr near the surface of Nd2Fe14B grains strengthens the anisotropy field, resulting in the high coercivity without alloying Dy to the initial magnet.
Article
Materials Science, Multidisciplinary
Shuai Cao, Xiaoqian Bao, Xinfang Song, Chi Zhang, Xiaoshuang Yan, Jiheng Li, Xuexu Gao
Summary: The commercial N50 Nd-Fe-B magnet underwent a combined diffusion process with Pr65Cu15Al20 and Pr50Tb30Al20, resulting in an increase in coercivity and the formation of uniform Tb-rich shells. The combined diffusion process proved effective in promoting Tb diffusion along grain boundaries and enhancing Tb availability.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Meng Lv, Tuo Kong, Wenhuai Zhang, Mingyuan Zhu, Hongming Jin, Wenxian Li, Ying Li
Summary: Nd-Fe-B magnets are widely used in high-tech fields due to their excellent magnetic properties. With the rapid development of the electric vehicle industry, there is a higher demand for these magnets, especially in terms of coercivity. The new technology of Grain Boundary Diffusion has been proposed to effectively increase the coercivity of Nd-Fe-B magnets.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jiaying Jin, Wang Chen, Mengfan Bu, Liang Zhou, Baixing Peng, Wei Li, Mi Yan
Summary: In this study, the coercivity of Nd-Ce-Fe-B magnets was improved through Pr-doping, resulting in higher magnetic performance. This research deepens our understanding of Pr/PrFe/PrAl diffusion and provides insights for the development of Ce-rich Nd-Ce-Fe-B magnets.
Article
Chemistry, Physical
Erhao Wang, Caihai Xiao, Jiayi He, Cifu Lu, Mozaffar Hussain, Renheng Tang, Qing Zhou, Zhongwu Liu
Summary: The use of a grain boundary diffusion process with ZnO as the diffusion source has significantly enhanced the coercivity and corrosion resistance of sintered Nd-Fe-B magnets. The coercivity of the magnets increased significantly while the formation of oxides at triple junctions improved the corrosion resistance of the diffused magnets.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Haijun Yu, Xiaoqian Bao, Jiheng Li, Xuexu Gao
Summary: Sintered Nd-Fe-B magnets were processed using single-step diffusion (SSD) and double-step diffusion (DSD) techniques with Tb metal and Pr60Cu20Al20 alloy. The coercivity of the magnets increased with both SSD and DSD, with DSD showing the highest coercivity. The microstructure analysis revealed that the formation of (Nd, Tb)2Fe14B phases enhanced the coercivity. The presence of Tb-poor anti-shells was found near the surface of the diffused magnets, but pre-diffusion of Pr60Cu20Al20 alloy improved the distribution of grain boundary phases in the DSD magnets, resulting in thinner anti-core/shell region layers compared to SSD magnets.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Wang Chen, Jiaying Jin, Shaoqing Ren, Baixing Peng, Liang Zhou, Chen Wu, Guozheng Liu, Mi Yan
Summary: Grain boundary diffusion process (GBDP) is usually used to modulate the surface microstructure of Nd-Fe-B magnets, but applying (Nd, Pr)Hx GBDP to Ce-substituted Nd-Ce-Fe-B magnets results in low coercivity due to the formation of REFe2 phase.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Zhehuan Jin, Guangfei Ding, Xiaodong Fan, Shuai Cao, Sining Fan, Zhixiang Wang, Bo Zheng, Shuai Guo, Renjie Chen, Aru Yan, Xincai Liu
Summary: The grain boundary diffusion process of Pr-Al-Cu at various temperatures in sintered Nd-Fe-B magnets and its influence on the magnetic properties were investigated. The results showed that the diffusion process resulted in the formation of shell phases rich in Pr and Al at 700 degrees C, which significantly enhanced the coercivity of the magnets after annealing. The thickness of the shell phase decreased during the annealing process and facilitated the formation of intergranular phases.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Sumin Kim, Hyun-Sook Lee, Woo Hyun Nam, Donghwan Kim, Weon Ho Shin, Jong Wook Roh, Wooyoung Lee
Summary: The magnetic properties and thermal stability of Tb-diffused Nd-Fe-B magnets were investigated, showing that diffusion temperature plays a key role in controlling thermal stability. Magnets fabricated at high diffusion temperatures exhibited good coercivity but poor thermal stability, while those prepared at lower temperatures showed the best thermal stability. The microstructure with diffused Tb atoms was found to be mainly responsible for the enhanced thermal magnetic stability in the magnets.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yuheng Xie, Shuai Cao, Xuejing Cao, Tengfei Wu, Mingpeng Kou, Zhi Jia, Guangfei Ding, Shuai Guo, Renjie Chen, Xincai Liu, Aru Yan, Zhiyi Xu
Summary: This study systematically investigated the magnetic properties and microstructures of sintered Nd-Fe-B magnets with different Nd-Cu powder additions and their corresponding diffused magnets using Tb-Cu alloys. The results showed that the enhancement of coercivity after diffusion was positively correlated with the intergranular phase proportion of the base substrates. Furthermore, the analysis of microstructures revealed that the higher coercivities were mainly attributed to the deeper diffusion depths of Tb elements and the presence of Nd-rich grain boundary phases in the base substrates, which facilitated the diffusion process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
E. H. Wang, L. X. Peng, P. Y. Chen, M. Wang, W. W. Zeng, C. H. Xiao, C. F. Lu, R. H. Tang, Z. G. Zheng, Q. Zhou
Summary: This work explores the effect of Nd70Zn30 doping and subsequent grain boundary diffusion on the coercivity and thermal stability of nanocrystalline Nd-Fe-B alloy. The study shows that the coercivity and thermal stability of the alloy are enhanced by suppressing the exchange interaction among grains through grain boundary phase evolution. The findings demonstrate the potential of nanocrystalline permanent magnets in improving the performance of low melting point alloys.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Physical
Lei Jin, Guangfei Ding, Jinhao Zhu, Zhehuan Jin, Bo Zheng, Shuai Guo, Renjie Chen, Aru Yan, Xincai Liu
Summary: The commercial sintered Nd-Fe-B magnet was processed by grain boundary diffusion using Pr60Tb13Al27 and Tb73Al27 alloys. The substitution of Tb by Pr in the Tb73Al27 alloy can further enhance coercivity, leading to reduced Tb-rich shell thickness and the formation of a two-layer Tb-rich shell in the magnet diffused by Pr60Tb13Al27. The presence of a large number of continuous grain boundary phases significantly enhances the exchange-decoupling effect between adjacent grains.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Materials Science, Multidisciplinary
Jiayi He, Jiali Cao, Zhigao Yu, Wenyue Song, Hongya Yu, Mozaffar Hussain, Zhongwu Liu
Summary: Grain boundary diffusion (GBD) is the best route for fabricating high-coercive Nd-Fe-B magnets, with the development of new diffusion sources expanding the application of GBD to include non-rare earth elements. The advancement of various coating methods improves the adhesion of diffusion sources, optimizing the fabrication process further.
Article
Materials Science, Multidisciplinary
Yongli Xing, Qisong Sun, Minggang Zhu, Jiaming Bai, Qiang Wang
Summary: This study reveals the correlation between the anisotropic fractal dimension of fracture surfaces and coercivity in different types of permanent magnets, providing new insights into studying the relationship between magnetic properties and microstructure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Ghulam Abbas Ashraf, Raqiqa Tur Rasool, Jing Chen, Lianjie Li, Muhammad Hassan, Jazib Ali, Lanting Zhang, Hai Guo
Summary: Element engineering in the Mhexaferrite system has been shown to boost catalytic activation effectively. This study used a novel LaCr substituted Mhexaferrite photocatalyst for degrading organic pollutants in water under LED irradiation, achieving more efficient results compared to conventional Mhexaferrite NPs.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Xianshuang Xia, Tieqiao Zhang, Mei Liu, Lanting Zhang, Renjie Chen, Xu Tang, Jinyun Ju, Wenzong Yin, Aru Yan
Summary: In this study, new efforts were made to recover the remanence and maximum energy product in diffusion-processed hot-deformed Nd-Fe-B magnets. Through annealing at 800 degrees C under pressure, improvements were seen in c-axis misalignment of grains, distribution of powder boundary phase, and squareness factor of the demagnetization curve. The enhanced squareness factor was attributed to the homogeneous magnetization reversal process caused by the uniform microstructure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Tieqiao Zhang, Shengsheng Liu, Zhongwei Wu, Lanting Zhang, Rong Yu
Summary: In this study, a high-temperature short-term annealing process was used to simultaneously improve the coercivity, remanence, and squareness factor of hot-deformed Nd-Fe-B magnets. The increase in coercivity was attributed to the melting and infiltration of the Nd-6(Fe,Co)(13)Ga phase. The slightly anisotropic growth of Nd2Fe14B grains resulted in improved grain alignment and enhanced remanence. The addition of a small amount of Co element significantly reduced the melting point of the Nd6Fe13Ga phase. A balance between infiltration within the powder flakes and grain growth was achieved, leading to the simultaneous improvement of coercivity, remanence, and squareness factor in hot-deformed Nd-Fe-B samples.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Xiaozhen Wang, Yishi Su, Xiaoshu Wang, Kan Liu, Lanting Zhang, Qiubao Ouyang, Di Zhang
Summary: In this study, the W-Cu composite coating was deposited on graphite flakes, and the GFs(W-Cu)/Cu composites were prepared by vacuum hot-pressing sintering. The interfacial bonding changed from mechanical connection to mechanical-metallurgical synergy, resulting in improved mechanical properties, thermal conductivity, and coefficient of thermal expansion of the composites.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Yuanxun Zhou, Yongchao Rao, Lanting Zhang, Shenghong Ju, Hong Wang
Summary: In this work, a kernel ridge regression (KRR) model was developed to accurately predict the Vegard's law factor (VLF) and volume size factor (SF) of binary substitutional metallic solid solutions (BSMSS). The model achieved good performance using 409 published entries and elemental descriptors. Additionally, an explicit expression was learned to explain the electronic coupling effect.
Article
Nanoscience & Nanotechnology
Yao Lu, Kai Zhang, Bingbing Zhao, Xianping Dong, Lanting Zhang
Summary: In this study, two high-entropy alloys were designed to explore the possibility of replacing expensive Co with Ni. The aging treatment at different temperatures showed that both alloys exhibited a good balance of strength and ductility at room temperature. The Al0.3CrFeNi2 alloy showed higher yield strength and lower elongation compared to the Al0.3CoCrFeNi alloy after aging at 550 degrees C. The difference in mechanical properties can be attributed to the volume fraction difference of L12 and M23C6 phases in the two alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Metallurgy & Metallurgical Engineering
Xin Zou, Cunli Liu, Muyang Deng, Ji Chen, Lanting Zhang, Ke Chen
Summary: Abnormal grain growth (AGG) commonly occurs during the post-weld heat treatment (PWHT) of friction stir welded (FSWed) AA6061, reducing joint strength and limiting its usage in superplastic forming. In this research, a new welding method with the introduction of a ball-milled Al-Ti powder mixture into the stir zone effectively inhibited AGG during PWHT. Microscopic characterizations revealed the evolution of the powder mixture into different particle formations and Al3Ti new phase. Quantitative analysis confirmed the increases in particle number and average size, validating the grain growth model and the enhanced particle pinning effect for AGG inhibition.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Chemistry, Physical
Cai Chen, Xinyi Ji, Jianhao Wang, Mei Liu, Yao Lu, Xiaoping Wang, Aimin Zhang, Li Chen, Xianping Dong, Lanting Zhang, Hong Wang
Summary: Fe-X-Ni (X 1/4 Cr, W and V) combinatorial thin-film materials chips were fabricated and characterized to establish the composition-phase-magnetic properties relationships. The results showed that saturation magnetization decreases with increasing dopped elements content and is influenced by grain size and texture. Comparing the Fe-X-Ni systems, different alloying elements lead to diverse magnetic properties due to the orientation and crystallinity of the fcc phase. The effect of heat treatment on magnetic properties indicates a close relationship between saturation magnetization and duration of heat treatment.
JOURNAL OF MATERIOMICS
(2023)
Article
Materials Science, Multidisciplinary
Mei Liu, Lanting Zhang, Bingbing Zhao, Fugang Chen, Xianshuang Xia, Yongjiang Yu, Hajime Yamamoto, Kazuhiro Ito
Summary: In this study, the plastic deformation behavior of Nd2Fe14B matrix grains was investigated by uniaxial compression. The stress exponent n and apparent activation energy Q were found to increase as the c-axis rotation increased from 0 degrees to 90 degrees. Short straight dislocations array on the (001) plane were observed in the 45 degrees-orientated specimen. Grain rotation via grain boundary sliding and dislocation-mediated deformation were found to occur when the micro-sized magnets were deformed above 1000 degrees C.
Article
Nanoscience & Nanotechnology
Yao Lu, Kai Zhang, Bingbing Zhao, Xianping Dong, Feng Sun, Baoxue Zhou, Yunqian Zhen, Lanting Zhang
Summary: Al0.3CoCrFeNiTix (x = 0.025, 0.075, 0.15) high-entropy alloys (HEAs) were studied to investigate the effects of Ti addition and aging temperature on the mechanical properties. The alloy aged at 700 degrees C with x = 0.15 showed the highest ultimate tensile strength (UTS) and fracture elongation both at room temperature and 700 degrees C. The outstanding balanced mechanical properties of the alloy are attributed to the uniformly distributed L1(2) and B2 particles, which are promoted by Ti.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Ze Liu, Cai Chen, Yuanxun Zhou, Lanting Zhang, Hong Wang
Summary: Many studies have used machine learning to predict the glass-forming range of metallic glasses. However, the imbalanced and clustered datasets used for training the model make it difficult for the model to extrapolate. In this work, the generalization deficiency of the machine learning model was addressed by combining high-throughput experimentation and machine learning modeling, highlighting the importance of comprehensive data. Training the models with comprehensive data distribution over the composition space, it was found that data imbalance can lead to a skewed model and balanced data is crucial for the model's performance. An element-wise machine learning strategy was demonstrated to accelerate the identification of the glass-forming range.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Biao Wu, Haihui Zhang, Yuanxun Zhou, Lanting Zhang, Hong Wang
Summary: In this study, we propose an approach to determine the phase boundary and its uncertainty in a phase-composition map based on high-throughput experimentation. The approach combines Bayesian logistics regression with domain knowledge of phase diagrams and models both linear and nonlinear phase boundaries. The effectiveness of the approach is demonstrated using experimental data, and the uncertainty can be further reduced by incorporating data from subbinary systems.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Haihui Zhang, Biao Wu, Lanting Zhang, Hong Wang
Summary: Thermodynamic modelling and quantification of uncertainty are crucial for multicomponent alloy design. In this study, the Ag-Cu, Ag-Co, and Co-Cu binary systems were assessed and used to model the Ag-Cu-Co ternary system. The calculated phase diagrams agreed well with experimental results, and the reliability of the models was validated. The Phase Diagram Uncertainty Quantification tool provided confidence measures in the design of solder alloys.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Jie Chen, Jian Liu, Minjuan Zhang, Zhanji Dong, Zhongjie Peng, Xinyi Ji, Mei Liu, Lanting Zhang, Anqi Zhang, Hong Zhu
Summary: Designing Nd-Fe-B-based permanent magnets with high temperature stability is crucial for their use in traction motors. Conventionally, heavy rare-earth elements are used for achieving high temperature stability, but at a higher cost. This study demonstrates the utilization of an adaptive learning framework to optimize the composition of Nd-Fe-B-based magnets with lower-cost elements and improve the performance-cost ratio. The framework efficiently screens novel compositions and guides the experimental design, resulting in significant improvements in the performance-cost ratio.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
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
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)