Article
Nanoscience & Nanotechnology
Kang Yan, Zhongwei Chen, Wenjie Lu, Yanni Zhao, Wei Le, YanQing Xue, Sufyan Naseem, Ali Wafaa
Summary: In-situ tension test in a transmission electron microscope was used to study the fracture process of aluminium, finding that multiple Frank-Read dislocation sources are formed in the crystal thinning area at the front of the crack, leading to the nucleation of nanocracks. Continuous perfect dislocations emitted from the crack tip slip, decompose, and form twin boundaries, with residual dislocations forming dislocation walls and stacking faults, ultimately causing slip at the twin boundary.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Jing Wang, Yongqing Zhao, Qinyang Zhao, Chao Lei, Wei Zhou, Weidong Zeng
Summary: Understanding the deformation and fracture mechanisms of metastable beta titanium alloys is crucial for improving their formability and service life. Through a comprehensive analysis, this study reveals the different roles of various phases in the equiaxed microstructure and identifies the factors that contribute to damage, such as shear bands and microvoids. The findings also shed light on the pathways of crack propagation.
Article
Nanoscience & Nanotechnology
Benjamin Galy, Michael Musi, Muriel Hantcherli, Guy Molenat, Alain Couret, Petra Spoerk-Erdely, Helmut Clemens, Jean-Philippe Monchoux
Summary: In this study, dislocation velocities in metallic systems were measured at high temperatures, with simultaneous determination of the corresponding mechanism. Coupled experiments of in-situ TEM investigations and stereographic analyses were conducted in an intermetallic alloy, identifying both mixed climb and pure glide mechanisms. The results showed that within a transition temperature domain, mixed climb can reach the velocity of glide, with dislocation velocities in the same order of magnitude (0.5-5 nm/s).
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Min-Su Lee, Jeong-Rim Lee, Jong Bae Jeon, Jong Woo Won, Yong-Taek Hyun, Tea-Sung Jun
Summary: In this study, the tensile deformation behavior of CP-Ti plate was investigated in both the rolling and transverse directions using in-situ SEM-EBSD testing and stress-relaxation method. It was found that different slip systems were activated in the two directions, with prismatic slip dominant in the rolling direction and higher activity of non-prismatic slip systems in the transverse direction. Slip transfer was observed in the transverse direction, promoting multiple slips and dislocation interactions, while limited slip transfer indicated strong dislocation pinning at the grain boundaries in the rolling direction. The formation of grain boundary ledges and sinks was pronounced in the rolling and transverse directions, respectively, and they contributed to the anisotropy in the strain-hardening behavior of polycrystalline a-Ti.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Le Chang, Xinran Liu, Jinling Zhao, Changyu Zhou
Summary: Molecular dynamics simulations are uniquely advantageous in capturing atomic-scale crack tip deformation details. This study presents a comprehensive analysis of the anisotropic crack tip behavior of hcp titanium under plane strain mode-I loading with commonly used potentials, discussing different crack systems' intrinsic brittleness and ductility. Depending on the selected potential, the dominant crack tip deformation mechanism may vary, with the Mendelev-II potential recommended for its more realistic crack tip response.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Chi Xu, Wentuo Han, Wenbin Xue, Yongliang Li, Song Li, Bingsheng Li, Farong Wan
Summary: The study observed in-situ dislocation motions in a single-crystalline gold thinfoil specimen driven by electron-beam illumination. Two types of dislocation motions were identified, with one leaving clear traces and the other leaving passage traces. The motions exhibit jerky behaviors and accelerate with increased beam intensity, leaving immobile trace structures identified as twin structures along the <111> crystal directions.
MATERIALS CHARACTERIZATION
(2022)
Article
Biochemistry & Molecular Biology
Maryam Afsharpour, Lugain Radmanesh, Chuanxi Yang
Summary: Green graphenes synthesized using natural precursors show good catalytic performance in antibiotic removal, with chitosan-derived graphene exhibiting the best performance.
Article
Biochemistry & Molecular Biology
Shella Permatasari Santoso, Artik Elisa Angkawijaya, Vania Bundjaja, Chang-Wei Hsieh, Alchris Woo Go, Maria Yuliana, Hsien-Yi Hsu, Phuong Lan Tran-Nguyen, Felycia Edi Soetaredjo, Suryadi Ismadji
Summary: The study synthesized composite hydrogel from guar gum and TiO2 for removing methylene blue through adsorption and photodegradation. The TiO2 particles in the hydrogel matrix were confirmed by SEM-EDX and XPS analysis, demonstrating a macroporous structure with pore sizes around 420 μm. UV radiation enhanced dye removal efficiency, with TiO2@GGH showing a higher adsorption capacity compared to GGH.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Physical
Xiuqing Zhang, Shuai Tang, Xiang Li, Wei Guo, Yongzhu Fu
Summary: Researchers have successfully developed a gel polymer electrolyte under mild conditions for Na-TiS2 battery, reducing safety hazards associated with the Na metal anode and improving cycling performance. The room-temperature ionic conductivity of the GPE reaches 3.66 x 10-4 S cm-1, with a transference number of 0.66 for Na+, demonstrating excellent stability with Na metal anode.
JOURNAL OF POWER SOURCES
(2021)
Article
Nanoscience & Nanotechnology
Shuo Zhou, Peng Chen, Min Zha, Yongfu Zhu, Bin Li, Hui-Yuan Wang
Summary: Atomistic simulations were conducted to investigate the interaction between prismatic dislocations and {1122} twin boundary in hexagonal close-packed titanium. Unusual and interesting dislocation transmutation was observed, where a (1010) 13 [1210] dislocation first transformed into a (0112) 3[2110] dislocation within the twin, which is not a common slip plane, and then further transformed into a prismatic dislocation (0110) 13 [2110] with lower line energy. This behavior, along with other prismatic dislocation transmutations, can be explained from the perspective of lattice correspondence in deformation twinning.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Nagarajan Thiyaneshwaran, Chithirai Pon Selvan, Avinash Lakshmikanthan, Katakam Sivaprasad, Balasubramanian Ravisankar
Summary: This study compares Ti/Al and Ti/Ni metal intermetallic laminates (MILs) and finds that both have specific strength, but Ti/Al MILs have lower density values than Ti/Ni laminates.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Multidisciplinary
T. Chen, W. S. Cai, Z. Liu, H. W. Ma, S. G. Qu, W. W. Zhang, C. Yang
Summary: This study establishes a methodology for in-situ dual-deoxidation to fabricate advanced titanium matrix composites using pressureless sintering. By utilizing this method, advanced TMCs with in-situ La2O3 particle and TiB whisker are successfully produced, exhibiting advantages such as reduced oxygen content, refined grains, and avoidance of pores. These advanced TMCs overcome the strength-ductility trade-off issue.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Chemistry, Inorganic & Nuclear
Xiao-Xue Liu, Zi-Rui Wang, Guang-Hui Chen, Qiao-Hong Li, Jun Tao, Lei Zhang
Summary: Here, a twisted cubic Cu(I)(4)Ti(IV)(4)-oxo cluster stabilized by in situ-formed 2,2'-biphenolate ligands from the oxidative coupling of phenols is reported. The 2,2'-biphenolate-functionalized Cu(I)(4)Ti(IV)(4)O-4 cluster exhibits shorter Cu-M contacts and smaller HOMO-LUMO gaps than those of reported Ti(IV)(4)O-4.
DALTON TRANSACTIONS
(2023)
Article
Nanoscience & Nanotechnology
C. Baruffi, M. Ghazisaeidi, D. Rodney, W. A. Curtin
Summary: First principles calculations predict a negative stacking fault energy in the NiCoCr alloy at 0K, indicating an infinite dissociation distance. However, experiments at room temperature show a finite dissociation, possibly due to solute strengthening. Atomistic simulations of a model NiCoCr alloy with a negative SFE reveal that solute strengthening can limit partial separation at 0K, but these barriers can be easily overcome at room temperature and shorter time scales. Therefore, solute pinning is insufficient to prevent dissociation under experimental conditions, suggesting a positive stacking fault free energy at room temperature or short-range-order effects.
SCRIPTA MATERIALIA
(2023)
Article
Environmental Sciences
Nagarajan Shobana, Pandurangan Prakash, Antony V. Samrot, Subramanian Saigeetha, Mahendran Sathiyasree, Rajendran Thirugnanasambandam, Sridevi Visvanathan, Basanta Kumar Mohanty, Gokul Shankar Sabesan, Shanmugaboopathi Dhiva, Rajan Renuka Remya, Senthilkumar Pachiyappan, Samraj Wilson
Summary: Metal nanoparticles, such as gold nanoparticles, silver nanoparticles, etc., have been widely used but raise concerns about environmental impact and exposure to living systems. In this study, silver nanoparticles were synthesized using plant gum and characterized using various techniques. The accumulation and toxic effects of the nanoparticles were evaluated in Eudrilus eugeniae, Danio rerio, and their embryos using microscopic observation and analytical methods.
Article
Mathematics, Interdisciplinary Applications
Kjersti Aas, Linda R. Neef, Lloyd Williams, Dag Raabe
SCANDINAVIAN ACTUARIAL JOURNAL
(2018)
Article
Nanoscience & Nanotechnology
Yuan Yu, Siyuan Zhang, Antonio Massimiliano Mio, Baptiste Gault, Ariel Sheskin, Christina Scheu, Dierk Raabe, Fangqiu Zu, Matthias Wuttig, Yaron Amouyal, Oana Cojocaru-Miredin
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Materials Science, Multidisciplinary
Hong Luo, Zhiming Li, Wenjun Lu, Dirk Ponge, Dierk Raabe
Article
Materials Science, Multidisciplinary
Hong Luo, Zhiming Li, Andrea M. Mingers, Dierk Raabe
Article
Nanoscience & Nanotechnology
Eric Breitbarth, Stefan Zaefferer, Fady Archie, Michael Besel, Dierk Raabe, Guillermo Requena
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Nanoscience & Nanotechnology
Jin-Kyung Kim, Wei Guo, Pyuck-Pa Choi, Dierk Raabe
SCRIPTA MATERIALIA
(2018)
Article
Materials Science, Multidisciplinary
P. Pandey, S. K. Makineni, A. Samanta, A. Sharma, S. M. Das, B. Nithin, C. Srivastava, A. K. Singh, D. Raabe, B. Gault, K. Chattopadhyay
Article
Nanoscience & Nanotechnology
Ariel Sheskin, Torsten Schwarz, Yuan Yu, Siyuan Zhang, Lamya Abdellaoui, Baptiste Gault, Oana Cojocaru-Miredin, Christina Scheu, Dierk Raabe, Matthias Wuttig, Yaron Amouyal
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Materials Science, Multidisciplinary
Jing Su, Dierk Raabe, Zhiming Li
Article
Chemistry, Multidisciplinary
Seok Su Sohn, Alisson Kwiatkowski da Silva, Yuji Ikeda, Fritz Koermann, Wenjun Lu, Won Seok Choi, Baptiste Gault, Dirk Ponge, Joerg Neugebauer, Dierk Raabe
ADVANCED MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
I. R. Souza Filho, M. J. R. Sandim, R. Cohen, L. C. C. M. Nagamine, H. R. Z. Sandim, D. Raabe
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
E. Plancher, L. Heraud, P. Lhuissier, R. Dendievel, D. Fabregue, J. -J. Blandin, G. Martin
MATERIALS & DESIGN
(2019)
Article
Materials Science, Multidisciplinary
E. Plancher, K. Qu, N. H. Vonk, M. B. Gorji, T. Tancogne-Dejean, C. C. Tasan
EXPERIMENTAL MECHANICS
(2020)
Article
Materials Science, Multidisciplinary
Emeric Plancher, Pouya Tajdary, Thierry Auger, Olivier Castelnau, Veronique Favier, Dominique Loisnard, Jean-Baptiste Marijon, Claire Maurice, Vincent Michel, Odile Robach, Julien Stodolna
Article
Engineering, Manufacturing
Theo Persenot, Alexis Burr, Emeric Plancher, Jean-Yves Buffiere, Remy Dendievel, Guilhem Martin
ADDITIVE MANUFACTURING
(2019)
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)
