Article
Engineering, Manufacturing
Zihong Wang, Xin Lin, Jingfeng Wang, Nan Kang, Yunlong Hu, Danqian Wang, Hongyun Li, Weidong Huang, Fushen Pan
Summary: The LPBF-processed AlMgScZr alloy exhibits high strength and impact toughness, but the post-aging treatment greatly deteriorates the impact toughness.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Manufacturing
Priyanka Agrawal, Sanya Gupta, Saket Thapliyal, Shivakant Shukla, Ravi Sankar Haridas, Rajiv S. Mishra
Summary: In-depth analysis of the microstructure of an AM alloy revealed promising properties for structural applications, with improved strength and ductility due to the presence of precipitates. The study utilized advanced microscopy techniques to study the microstructure and understand the mechanisms behind the enhanced tensile properties.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Zihong Wang, Xin Lin, Nan Kang, Jing Chen, Hua Tan, Zhe Feng, Zehao Qin, Haiou Yang, Weidong Huang
Summary: By using laser powder bed fusion to process Sc/Zr-modified Al-based alloys, the precipitation behavior of primary Al-3(Sc,Zr) was studied. It was found that the precipitation of primary Al-3(Sc,Zr) could be effectively suppressed in the inner region of the molten pool, inducing the formation of a heterogeneous alpha-Al matrix. Direct aging introduced heterogeneous secondary Al-3(Sc,Zr) precipitates within alpha-Al matrix, resulting in reduced mechanical heterogeneity and improved tensile ductility.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
F. Belelli, R. Casati, C. Andrianopoli, F. Cuccaro, M. Vedani
Summary: Only a few high strength aluminum alloys can be processed using Laser Powder Bed Fusion due to the occurrence of hot cracks during solidification. The addition of zirconium and scandium in aluminum-magnesium alloys has been proven effective in suppressing solidification cracking and improving strength. Therefore, it is necessary to focus on novel aluminum alloys with enhanced processability and low scandium content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zhengjiang Gao, Teng Ma, Hui Li, Huan Yang, Wu Wei, Hui Huang, Zuoren Nie
Summary: Er-Zr-Sc modified Al-Mg alloy, manufactured by selective laser melting, offers excellent mechanical properties due to the formation of a desirable microstructure and the synergistic effects of multiple strengthening mechanisms.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Rong Xu, Ruidi Li, Tiechui Yuan, Hongbin Zhu, Ping Li
Summary: The addition of TiC in TiC/Al-Mg-Sc-Zr composites prepared by DED can refine the microstructure, reduce porosity, increase tensile strength, and improve ductility. However, with further increase of TiC content, the microstructure becomes coarser and a new phase appears.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Optics
Xiang Li, Yunzhong Liu, Chaolin Tan, Yongming Zou
Summary: In this study, a crack-free AlMgScZr alloy was successfully prepared by laser powder bed fusion (LPBF). The laser printability, microstructure evolution, and mechanical performance of this alloy were investigated. The findings show that the alloy achieved a near fully equiaxed ultrafine grain structure and the cracks were eliminated after a synergistic modification. The in-situ formation of Al3(Sc, Zr) nano-precipitates promoted grain refinement and improved mechanical performance.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Ao Wang, Yuqing Yan, Zhenyu Chen, Hongzi Qi, Yuan Yin, Xinhua Wu, Qingbo Jia
Summary: This study systematically investigated the multiple effects of adding Sc/Zr elements to SLM fabricated aluminum alloys, using the newly developed alloy Al-MnSc as an example. The addition of Sc/Zr elements generated an unconventional heterogeneous grain structure in the aluminum alloy, which effectively avoided solidification cracks and alleviated mechanical property anisotropy issues.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Lanbo Li, Tiechui Yuan, Bo Feng
Summary: Al-Zn-Mg-Cu-Si-Zr powders were produced using directed energy deposition (DED) and laser powder bed fusion (LPBF) methods. The DED sample had larger pore and grain sizes (30μm and 15.36μm) compared to the LPBF sample (3μm and 3.12μm). The microstructure of the DED sample consisted of equiaxed grains, while the LPBF sample exhibited a mixed microstructure with large columnar grains in the melt pool center and small equiaxed grains on the melt pool boundary. The mechanical properties of the LPBF sample, including yield strength, tensile strength, and elongation, were significantly higher than those of the DED sample.
Article
Materials Science, Multidisciplinary
Bharat Mehta, Arvid Svanberg, Lars Nyborg
Summary: This study presents a rapid and systematic method for identifying the full density and peak hardness of an Al-Mg-Sc-Zr alloy known as Scalmalloy(R). The alloy is suitable for laser powder bed fusion and has a relative density of over 99.8%. The study also explores the thermal stability of the alloy after peak hardening and finds that lower temperature aging treatments can reduce hardness deterioration.
Article
Engineering, Industrial
Yueting Wang, Jian Li, Xizhen Xia, Liang Zou, Tiechui Yuan, Xinyan Liu, Duan Lai, Shenghua Deng, Ruidi Li
Summary: A novel Al-Cr-Sc-Zr alloy with high-density bulk samples and a refined structure consisting of three main phases was designed and analyzed for laser directed energy deposition (DED). The Al45Cr7 phase exhibited preferential growth directions and internal icosahedral-quasicrystal structure, leading to exceptional hardness and thermal stability. At optimized laser power and scanning speed, the alloy demonstrated high tensile strength and improved thermal stability.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yanwu Guo, Wu Wei, Wei Shi, Xiaorong Zhou, Hui Huang, Shengping Wen, Xiaolan Wu, Kunyuan Gao, Li Rong, Peng Qi, Zuoren Nie
Summary: The Er and Zr modified Al-Mg alloy manufactured by selective laser melting showed improved mechanical properties and strength after aging treatment. The synergistic precipitation of Er and Zr led to the formation of bimodal grain structures, promoting phase evolution in the alloy.
Article
Materials Science, Multidisciplinary
Pan Deng, Wenfeng Mo, Zuoqiong Ouyang, Chenglu Tang, Binghui Luo, Zhenhai Bai
Summary: In order to develop high-strength and excellent corrosion resistance Al-Cu-Mg alloys for aircraft skins in aerospace, this study investigated the mechanical properties, corrosion behaviors, and microstructures of 2024 (Al-3.78Cu-1.27 Mg) and 2024SZ (Al-3.74Cu-1.17 Mg-0.1Sc-0.2Zr) alloys. The results show that the addition of (Sc, Zr) transformed the microstructure of the alloy, leading to improved mechanical properties and enhanced corrosion resistance. The present investigation provides a comprehensive understanding of the strengthening and corrosion mechanisms in Al-Cu-Mg alloy.
MATERIALS CHARACTERIZATION
(2023)
Article
Nanoscience & Nanotechnology
Yanfang Wang, Xin Lin, Yufan Zhao, Qijuan Dong, Shuoqing Shi, Xuehao Gao, Haiou Yang, Weidong Huang
Summary: The effect of direct aging treatment on the microstructure and strengthening mechanisms of Zr-modified Al-Cu-Mg alloys fabricated by SLM was analyzed in this study. After direct aging treatment, the fine alpha-Al grains were maintained and the S'-Al2CuMg precipitates dissolved. The precipitation of secondary Al3Zr-L12 led to a larger increase in precipitation strengthening compared to grain boundary strengthening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Xiang Li, Yunzhong Liu
Summary: Laser powder bed fusion (LPBF) technology has been widely used in various industries, but the understanding of its effect on alloy properties is still limited. In this study, the effects of remelting and layer thickness on the properties of LPBF fabricated Al-Mg-Sc-Zr alloy were systematically investigated. The results showed that remelting improved densification and surface quality, and had an impact on microhardness and fracture elongation. These findings provide valuable insights for the fabrication of high-performance lightweight alloy parts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Zehao Qin, Nan Kang, Fengying Zhang, Zihong Wang, Qian Wang, Jing Chen, Xin Lin, Weidong Huang
Summary: This study investigates the high cycle fatigue properties of an Al-Mg-Sc-Zr alloy manufactured via SLM with optimized parameters, finding periodic, inhomogeneous microstructure causing reduced fatigue life. X-ray CT results show random distribution of mainly porosity defects initiating fatigue crack. Annealed samples exhibit good fatigue strength close to high-strength 7075Al. A fatigue crack propagation mode related to defect microstructure characteristics is established for predicting fatigue properties.
INTERNATIONAL JOURNAL OF FRACTURE
(2022)
Article
Engineering, Industrial
Zhe Feng, Hua Tan, Yanbo Fang, Xin Lin, Weidong Huang
Summary: The study demonstrates that the 6.5 wt% TiB2/AlSi10Mg composite manufactured by SLM has a wide processing window and excellent tensile properties. The material exhibits uniform equiaxed microstructures, and its tensile properties surpass those of reported SLM-ed matrix alloys and other particle reinforced Al-Si composites.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Haoxiang Wang, Xin Lin, Nan Kang, Zehao Qin, Shuoqing Shi, Jiacong Li, Weidong Huang
Summary: Hybrid manufacturing combines additive manufacturing techniques with traditional processing methods to create complex structures on regular components. This study used selective laser melting to produce a bimetal material on a deformed Al6061 alloy substrate, and investigated the interface characteristics and mechanical properties of the hybrid manufactured samples.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Engineering, Manufacturing
Yinghui Zhou, Xin Lin, Nan Kang, Yao Tang, Weidong Huang, Zhennan Wang
Summary: The study obtained a heterogeneous band structure of a 2219 Al alloy using wire + arc additive manufacturing. The water-cooled deposit exhibited higher volume fraction of columnar grains and better mechanical properties, compared to the air-cooled deposit. The different deformation patterns and dislocation coordination of the columnar and equiaxed grains explained the differences in mechanical properties.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Manufacturing
Zehao Qin, Nan Kang, Mohamed El Mansori, Zihong Wang, Haoxiang Wang, Xin Lin, Jing Chen, Weidong Huang
Summary: This study investigates the defects, microstructure, and fatigue properties of Sc and Zr-modified Al-Mg alloy fabricated by laser powder bed fusion (LPBF) in different building directions. The research finds that transversely deposited (TD) samples exhibit higher fatigue strength due to the defects and microstructure. The lack of fusion leads to higher stress concentration in the parallelly deposited (PD) samples, while the indistinctive crack deflection and possible cyclic softening of columnar grains result in decreased fatigue resistance.
ADDITIVE MANUFACTURING
(2022)
Article
Engineering, Industrial
Jinglin Lu, Xin Lin, Nan Kang, Yang Cao, Qingzheng Wang, Jiacong Li, Lingyu Zhang, Weidong Huang
Summary: The microstructure and mechanical properties of Al-Mn-Sc alloys fabricated by selective laser melting were studied. It was found that the precipitation sequence and Sc/Mn ratio were critical for controlling the grain and precipitate characteristics. The pre-precipitated Mn-bearing particles inhibited the formation of Al3Sc, resulting in a columnar grain structure, while the preferentially precipitated Al3Sc induced a bimodal grain structure and led to cracking in regions with mismatched deformation capacity.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Yanfang Wang, Xin Lin, Nan Kang, Zihong Wang, Yuxi Liu, Weidong Huang
Summary: A direct aging regime was proposed to maintain the grain-boundary strengthening and precipitation strengthening in modified conventional wrought aluminum alloys, resulting in a higher yield strength compared to the normal T6 heat treatment. The direct aging treatment preserved the ultrafine grains and precipitated spherical L1(2)-Al3Zr particles, while the solution treatment and aging led to grain coarsening and the presence of coarsening L1(2)-Al3Zr particles, nano-sized S' phases, and GPB zones. Both the direct aging and solution treatment and aging samples exhibited higher strength than other SLMed Al-Cu-Mg series alloys, comparable to the wrought AA2024-T6 alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Yanfang Wang, Xin Lin, Nan Kang, Zihong Wang, Qingzheng Wang, Yuxi Liu, Weidong Huang
Summary: In this study, Zr-modified 2024Al alloy deposits were prepared using L-PBF technology, with the addition of 1.3wt% Zr, which reduced the solidification cracking susceptibility and improved the grain structure of the alloy. After T6 heat treatment, the yield strength and ultimate tensile strength of the alloy were further increased, reaching comparable or even higher levels than conventional wrought alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Q. Z. Wang, X. Lin, N. Kang, X. L. Wen, Y. Cao, J. L. Lu, D. J. Peng, J. Bai, Y. X. Zhou, M. El Mansori, W. D. Huang
Summary: Understanding the effect of reinforcements on microstructure evolution and strengthening mechanism is crucial for developing good performance aluminum matrix composites (AMCs) prepared by laser additive manufacturing (LAM). In this study, the roles of submicron-TiB2 particles in the grain morphology evolution, mechanical properties, and corresponding strengthening mechanism of the 2024Al matrix processed by laser directed energy deposition (L-DED) and laser powder bed fusion (L-PBF) were compared. The results show that the L-DED processed TiB2p/2024Al composite has equiaxed grains, while the L-PBF processed composite only shows refinement in columnar grains. Both L-DED and L-PBF fabricated 3 wt% TiB2p/2024Al composites exhibit enhanced strength and plasticity due to grain refinement. Grain boundary strengthening, dislocation strengthening, and load transfer strengthening contribute to the increased yield strength in L-DEDed TiB2p/2024Al sample.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Bo Yao, Xufei Lu, Liang Ma, Nan Kang, Shang Sui, Hua Tan, Jing Chen
Summary: In laser blown powder directed energy deposition (DED), the self-regulation effect (SRE) is a unique phenomenon that compensates for the sloping deposition surface induced by process fluctuations or part warpage. Previous numerical studies on DED have overlooked the variable layer thickness and the credibility of simulations. In this study, an improved modeling process considering SRE is proposed, and experimental measurements are used to quantify the relationship between layer thickness and powder standoff distance (PSD) and inter-layer temperature (ILT). Two thermo-mechanical finite element (FE) models are established to examine the proposed modeling strategy, and the results demonstrate that the model with SRE significantly improves the mechanical and geometric predictions of DED parts.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Automation & Control Systems
Qingzheng Wang, Xin Lin, Mohamed El Mansori, Yang Cao, Nan Kang, Weidong Huang
Summary: This work investigated the heat-induced microstructure evolution and mechanical properties of the TiB2p/2024Al composite prepared by SLM. The as-deposited composite exhibited a gradient microstructure and mechanical properties, but this gradient could be eliminated and the mechanical properties could be improved through solid solution and aging heat treatment.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Wendi Shi, Yahui Yang, Nan Kang, Minjie Wang, Biao Chen, Yulong Li, Umeda Junko, Katsuyoshi Kondoh, Jianghua Shen
Summary: This study adopted the selective laser melting (SLM) additive manufacturing method to produce high oxygen-doped commercial purity titanium (Ti-O). The results showed that the TiO2 powders decomposed under the SLM process and the oxygen atoms were presented as solid solutes. The strength of SLM Ti-O drastically increased regardless of loading rate, while pure Ti and Ti-O alloy exhibited distinct strain rate sensitivity. The difference between these SLM samples was found to closely relate with their microstructures.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Xiaoli Wen, Bin Chen, Zhao Chen, Xin Lin, Haiou Yang, Nan Kang, Qingzheng Wang, Weili Wang, Weidong Huang
Summary: The microstructural evolution and mechanical properties of 3 wt% TiB2p reinforced 2024Al composite after T6 heat treatment were investigated. It was found that the T6 heat treatment led to the formation of ultrafine Al2CuMg precipitates and a small amount of AlCuMnFe (T) dispersoids. Quantitative analysis revealed that grain refinement and Orowan strengthening contributed to the high strength of the annealed TiB2p/2024Al composite.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Zehao Qin, Nan Kang, Huajing Zong, Chunhui Zhan, Yanbo Fang, Zihong Wang, Mohamed El Mansori, Jing Chen, Xin Lin, Weidong Huang
Summary: This study applies hot isostatic pressing (HIP) to enhance the fatigue properties of L-PBFed alloys by healing porosities and promoting oxidation, highlighting the critical role of oxides in fatigue performance.
MATERIALS RESEARCH LETTERS
(2022)
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)