Article
Materials Science, Multidisciplinary
Zhi Zhang, Jinshu Xie, Jinghuai Zhang, Shujuan Liu, Ruizhi Wu, Xiaobo Zhang
Summary: This study presents a new hot-extruded + annealed alloy with a good combination of yield strength and formability potential due to the formation of nano precipitates and texture-weakened heterogeneous grains. The introduction of nano precipitates enhances the alloy's strength with minimal detrimental effect on ductility. The formation of a heterogeneous-grained structure with a weak basal texture is primarily attributed to the segregation of Sm, Zn, and Ca elements at the grain boundaries. This structure promotes additional hetero-deformation induced hardening and provides a large work-hardening capacity, resulting in high elongation. Introducing nano precipitates and texture-weakened heterogeneous grains offers a new strategy to improve yield strength and formability potential.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
A. E. Davis, J. R. Kennedy, D. Lunt, J. Guo, D. Strong, J. D. Robson
Summary: Preageing technique can significantly increase the hardness of magnesium alloys, reduce total ageing times, and provide a certain degree of customization of mechanical properties through control of precipitate habit plane and morphology. However, the effectiveness of this technique depends on the alloy system, with the focus on the fundamental processes of precipitate nucleation and phase evolution.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Faping Hu, Hao Chen, Ronghai Liu, Guobing Wei, Fangcheng Qiu, Hanyu Li, Weidong Xie
Summary: The deformation mechanism and mechanical properties of fine-grained Mg-3 wt. % Gd alloy during plastic deformation were investigated under different strains. The results showed that the dislocation density and tension twin density increased with increasing strain. The proportion of low angle grain boundaries tripled at 10% strain, while compression or double twins were observed. At 20% strain, the dislocation density saturated, but compression or double twins were more frequently detected, resulting in a low work hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
G. S. Duan, Y. H. Chu, L. H. Song, Z. W. Guan, J. X. Zhou, R. C. Wang, X. H. Du, B. L. Wu, C. Esling
Summary: The ratcheting behavior in an extruded AZ31B magnesium alloy was investigated. Basal < a > slip, prismatic < a > slip and {10-12} extension twinning/detwinning were identified as the deformation mechanisms. The weight of the slips or twinning/detwinning affected the valley strain and ratcheting strain. The increase of slip weight resulted in a higher strain hardening rate, causing deviation from the regular ratcheting strain pattern at a stress amplitude of 105 MPa.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Metallurgy & Metallurgical Engineering
Yuanjie Fu, Yao Cheng, Yun Cui, Yunchang Xin, Shouwen Shi, Gang Chen
Summary: This study investigates the deformation mechanisms and differential work hardening behavior of rolled AZ31 magnesium alloy sheets under biaxial loading. The results show that biaxial loading leads to higher macroscopic work hardening rates compared to uniaxial loading, with low activation of non-basal slip and activation of contraction twinning at larger plastic strain.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Nanoscience & Nanotechnology
Nan Xia, Cheng Wang, Yipeng Gao, Zhen-Ming Hua, Chen-Yi Ma, Chun-Feng Du, Hang Zhang, Hong-Min Zhang, Mei-Xuan Li, Min Zha, Hui-Yuan Wang
Summary: In this study, a Mg?1Zn?0.2Zr (ZK10) alloy sheet was prepared by multi-pass hot rolling and annealing, with the addition of dilute Ca to tailor the basal texture and reduce plastic anisotropy. Microstructural characterizations showed improved ductility due to the occurrence of pyramidal c+a slip in the deformed alloys. This work may offer a new strategy for developing wrought Mg alloys with enhanced ductility.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Tianxu Zheng, Yaobo Hu, Chao Zhang, Tianshuo Zhao, Fusheng Pan, Aitao Tang
Summary: The high ductility of the Mg-2Gd-0.4Zr alloy at room temperature is attributed to the rare earth texture, higher proportion of non-basal slip, high grain boundary strength, and synergy between twinning and dislocation. Local strain compatibility may also contribute to its high ductility.
MATERIALS CHARACTERIZATION
(2021)
Article
Metallurgy & Metallurgical Engineering
Xia Lin, Zhiyong Chen, Jianbo Shao, Jiangying Xiong, Zhang Hu, Chuming Liu
Summary: Mg-6.75Zn-0.57Zr-0.4Y-0.18Gd (wt.%) sheet with typical basal texture was produced by cross rolling and annealing. The deformation mechanism and orientation evolution during tension were studied, and the results showed that the activation of deformation mechanism depended on the initial grain orientation. Different grain orientations exhibited different deformation modes and lattice rotation behavior, which influenced the mechanical properties of the material.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Lu Zhang, Xinghao Du, Li Zhang, Wanpeng Li, Yuxin Liang, Jianxin Yu, Naifu Zou, Gang Wan, Yan Tang, Guosheng Duan, Baolin Wu
Summary: A CoCrNi-based medium-entropy alloy strengthened with ?*-Ni6(Al,Ti)Nb was prepared, showing excellent mechanical properties with a yield strength of 1.34 GPa, ultimate tensile strength of 1.55 GPa, and ductility of 9.2%. The deformation mode transitioned from stacking faults to dislocation slip during deformation, and the high strain hardening rate was attributed to the hindering effect of the ?*-Ni6(Al,Ti)Nb phase and hard-deformed non-recrystallized grains.
Article
Chemistry, Physical
Fan Zhang, Bairu Lu, Xiongjun Liu, Hui Wang, Suihe Jiang, Muhammed Naeem, Xun-Li Wang, Yuan Wu, Zhaoping Lu
Summary: In this study, the effects of hydrogen on the mechanical properties and deformation behavior of Fe-Co-Ni-Cr precipitation-hardened HEAs were systematically investigated. It was found that hydrogen can enhance localized plastic deformation and cause stress concentration near the fracture, but the response of mechanical properties depends on the number of nanoprecipitates. In HEAs with a proper amount of nanoprecipitates, localized plastic deformation promoted the formation of deformation twinning and improved the strength and ductility. However, excessive nanoprecipitates accelerated the fracture process and led to hydrogen embrittlement with reduced ductility. These findings are important for understanding the hydrogen embrittlement mechanism in complex alloys and for the future design of high-performance HEAs with good hydrogen embrittlement resistance.
Article
Engineering, Mechanical
Jiantao Fan, Xinbo Jia, Liming Fu, Jian Wang, Shuo Maa, Yanle Suna, Mao Wen, Aidang Shan
Summary: The development of alloys with excellent strength-ductility synergy has long been a research theme for material scientists. This study introduces a heterogeneously-grained microstructure containing recrystallized ultrafine and fine grains with dense nano-sized precipitates into a Co-free complex-concentrated alloy. The alloy exhibits ultra-high yield and tensile strength, accompanied by remarkable uniform elongation. Strain partition and hetero-deformation-induced stress accumulation contribute to the outstanding strength and ductility of the alloy.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Engineering, Mechanical
Zhi Zhang, Jinghuai Zhang, Jinshu Xie, Shujuan Liu, Wei Fu, Ruizhi Wu
Summary: By introducing beneficial solute to achieve grain boundary segregation and reducing the critical resolved shear stress (CRSS) ratio, we obtained a Mg-0.3Er alloy with moderate-fine grains and high ductility. This study not only provides an effective way for large-scale development of high ductility Mg alloys at room temperature, but also reveals the origins of ultrahigh ductility by examining the fraction of non-basal slips and the level of grain boundary segregation.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
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
Materials Science, Multidisciplinary
Ravi Sankar Haridas, Priyanka Agrawal, Surekha Yadav, Priyanshi Agrawal, Anurag Gumaste, Rajiv S. Mishra
Summary: The excellent work hardening in TRIP-enabled metastable high entropy alloys is attributed to the phase transformation from austenite to martensite, as well as non-basal slip activity and deformation twinning. A five-parameter empirical model has been developed to replicate the work hardening rate in TRIP HEAs, with easy parameter identification compared to physically based models. The model parameters are correlated with stacking fault energy to predict the tensile stress-strain response of TRIP HEAs.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Feng He, Zhongsheng Yang, Shaofei Liu, Da Chen, Weitong Lin, Tao Yang, Daixiu Wei, Zhijun Wang, Jincheng Wang, Ji-jung Kai
Summary: A Ni2CoCrFeTi0.24Al0.2 HEA was developed with a yield strength of approximately 1.3 GPa and tensile elongation of 20% through single-step heat treatment. The excellent strength-ductility combination is attributed to the grain scale heterogeneous structure with L1(2) precipitates ranging from 10 to 100 nm. Additionally, the efficient hetero-deformation induced strain hardening effect allows for the good ductility of the HEA.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Biodiversity Conservation
Yuanyuan Shen, Yu Ji, Wenke Wang, Tianpeng Gao, Haijuan Li, Mingyan Xiao
Summary: This study investigated the effects of Ryegrass on bacterial community and diversity in petroleum contaminated soil. High-throughput sequencing technology was used to compare the bacterial communities in 14 groups samples at different repair stages. The study found that different responses were observed to promote or inhibit microbial reproduction, and the repair time has a vital effect on microbial community changes.
HUMAN AND ECOLOGICAL RISK ASSESSMENT
(2023)
Article
Materials Science, Multidisciplinary
Wenke Wang, Jaimyun Jung, Chao Cui, Wenzhen Chen, Yang Yu, Peng Li, Wencong Zhang, Renlong Xiong, Hyoung Seop Kim
Summary: This work investigated the anisotropy variation of tensile flow stress for AZ31 magnesium alloys at different temperatures and tensile strains using the visco-plastic self-consistent model. The results showed that the anisotropy of flow stress weakened with increasing temperature and exhibited a slightly increasing stage followed by a continuously decreasing stage with increasing strain. Activation of basal slip and tension twinning contributed to the development of a (0002)//LD type texture during tension deformation, while activation of prismatic slip produced a < 10-10 >//LD type texture. The study found that the macroscopic average resolved shear stress decreased significantly with increasing temperature or strain, resulting in the decline of the tension deformation behavior anisotropy.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Wenzhen Chen, Manman Yuan, Wenke Wang, Jun Yu, Wencong Zhang, Tianyue Teng
Summary: In this study, the effects of surface bending and base bending on the bending strength and microstructure variation of friction stir welded ZM6 magnesium alloy sheet are compared. The results show that different bending methods produce different microstructure variations, resulting in changes in yield strength.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Oncology
Ranxu Wang, Conghui Jia, Nannan Zheng, Shujuan Liu, Zhilin Qi, Ruiwen Wang, Lu Zhang, Yumei Niu, Shuang Pan
Summary: This study explores the clinical application of a Titanium dioxide/nano-hydroxyapatite (TiO2-HAP) composite combined with a dental curing lamp, which can inhibit dental plaque biofilm formation by Streptococcus mutans (S. mutans) and promote enamel surface remineralization.
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
(2023)
Article
Ecology
Ruyi Feng, Lei Duan, Siqi Shen, Yan Cheng, Yanhua Wang, Wenke Wang, Shengke Yang
Summary: The widespread spread of antibiotic resistance genes (ARGs) in the hyporheic zone (HZ) is a growing environmental problem. This research investigates the effects of oxygen changes, temperature, and salinity on the abundance of ARGs in the HZ. It also analyzes the bacterial community composition of sediment samples and their relationship with ARGs. The study reveals that changes in bacterial communities, oxygen conditions, and horizontal gene transfer (HGT) of mobile genetic elements (MGEs) play significant roles in the spread of ARGs.
Article
Materials Science, Multidisciplinary
Jinshu Xie, Zhi Zhang, Shujuan Liu, Jinghuai Zhang, Jun Wang, Yuying He, Liwei Lu, Yunlei Jiao, Ruizhi Wu
Summary: Two new low-alloyed Mg-2RE-0.8Mn-0.6Ca-0.5Zn alloys with excellent extrudability and superior mechanical properties, especially high-temperature strength, have been developed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Chemistry, Physical
Wenke Wang, Xinhua Liu, Zhihao Wang, Miaomiao Chen, Wenzhen Chen, Wencong Zhang, Hyoung Seop Kim
Summary: This study investigates the effects of asymmetric basal texture on the stretchability and microstructure variations of magnesium alloy sheet. The results show that plastic deformation is concentrated in the central region of the sample during stretch forming, and the transverse direction sample has higher stretch formability. This is attributed to the weak basal texture in the transverse direction sample, which activates more basal slip and tension twinning. Additionally, the activation of basal slip narrows the spread angle of the basal pole for the transverse direction sample, while only increasing the basal texture intensity for the rolling direction sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Yangju Feng, Yunbin Lu, Xuesong Liu, Hongyang Cao, Wenke Wang, Jianlei Yang, Wenzhen Chen, Guorong Cui
Summary: In this paper, a novel columnar network structure reinforced TiBw/TA15 composites with excellent strength and high plasticity have been designed and prepared. The study showed that the columnar network structure effectively strengthened the grain boundary of the high temperature beta phase, enhancing the strength of the composites. The presence of TiBw hindered the movement of dislocations and provided a favorable condition for dynamic recrystallization of the matrix, leading to decreased dislocation density, refined grains, and improved plasticity. As a result, an effective combination of strength and plasticity was achieved in the composites.
SCRIPTA MATERIALIA
(2023)
Article
Environmental Sciences
Wenke Wang, Jianlong Wang, Bibo Lu, Boyuan Liu, Yake Zhang, Chunyang Wang
Summary: A mixed convolutional parallel transformer (MCPT) model based on Vision transformers (ViT) is proposed for fast PolSAR image classification. The method introduces mixed depthwise convolution tokenization to reduce computational and parameter complexity and extract features of different receptive fields. It implements a parallel encoder by pairing the same modules and decreases the network depth and computing power requirement. Experimental results show significant improvement in training and prediction speed, with overall accuracy of 97.9% and 96.77% achieved on AIRSAR Flevoland and RADARSAT-2 San Francisco datasets, respectively.
Article
Chemistry, Multidisciplinary
Jinshu Xie, Jinghuai Zhang, Shujuan Liu, Zihao You, Zhi Zhang, Tengfei Zhao, Xiaobo Zhang, Ruizhi Wu
Summary: A high-performance Mg-10Gd-4Dy-1.5Ag-1Zn-0.5Zr (wt.%, EQ142X) alloy was designed using multi-element composite addition, resulting in high yield strength (approx. 396 MPa) and ultimate tensile strength (approx. 451 MPa) after hot extrusion and ageing. The high strength is attributed to fine grains and nano-precipitates, especially beta' and gamma nano-precipitates, which act as the main strengthening phases. The introduction of nano-precipitates network into the fine-grained structure is proposed as an effective strategy for developing high-strength Mg alloys.
Article
Materials Science, Multidisciplinary
Wenzhen Chen, Wenjie Wu, Wenke Wang, Wencong Zhang, Xinhua Liu, Hyoung Seop Kim
Summary: Texture adjusting approaches were proposed to improve tension-compression asymmetry in magnesium alloys. The dominant deformation mechanism during yielding was quantified based on Sachs assumption and primarily manifested as twinning inhibition and transition between twinning and slip. The impacts on yield strength and asymmetry were estimated by modified Hall-Petch relationship. Slight texture adjustments, particularly of basal texture divergence, can significantly improve strength asymmetry while avoiding severe strength loss, illustrating the importance and potential of texture adjustment in engineering.
MATERIALS RESEARCH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Zhi Zhang, Jinshu Xie, Jinghuai Zhang, Shujuan Liu, Ruizhi Wu, Xiaobo Zhang
Summary: This study presents a new hot-extruded + annealed alloy with a good combination of yield strength and formability potential due to the formation of nano precipitates and texture-weakened heterogeneous grains. The introduction of nano precipitates enhances the alloy's strength with minimal detrimental effect on ductility. The formation of a heterogeneous-grained structure with a weak basal texture is primarily attributed to the segregation of Sm, Zn, and Ca elements at the grain boundaries. This structure promotes additional hetero-deformation induced hardening and provides a large work-hardening capacity, resulting in high elongation. Introducing nano precipitates and texture-weakened heterogeneous grains offers a new strategy to improve yield strength and formability potential.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhi Zhang, Jinshu Xie, Jinghuai Zhang, Hao Dong, Shujuan Liu, Xiaobo Zhang, Jun Wang, Ruizhi Wu
Summary: In this study, trace Er addition was found to synergistically improve the mechanical and anti-corrosion properties of the Mg-1.4Al-0.4Mn-0.4Ca0.3Er alloy. The corrosion rate of the alloy was reduced by one order of magnitude compared to the reference alloy. This improvement was attributed to the reduction in dynamic recrystallization and the formation of stronger strengthening phase particles. The addition of Er also promoted the formation of a less noble Al8Mn4Er phase with effective Fe trapping ability and induced dislocation segregation, leading to reduced micro-galvanic corrosion.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jinshu Xie, Jinghuai Zhang, Zhi Zhang, Zijian Yu, Zhihao Xu, Ru Wang, Daqing Fang, Xiaobo Zhang, Xiaoru Zhang, Ruizhi Wu
Summary: Understanding the corrosion mechanism of magnesium (Mg) alloys and controlling the potential fluctuation are crucial for developing high-strength corrosion-resistant Mg alloys. This study reveals that the presence of different microstructures in Mg alloys can affect the corrosion rate and film formation. The structurally enhanced microstructure can reduce the potential fluctuation, leading to improved corrosion resistance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Liangnan Tong, Danqing Liu, Zhiyue Cao, Nannan Zheng, Chenchen Mao, Shujuan Liu, Liangcan He, Shaoqin Liu
Summary: Gene therapy using siRNA has gained much attention for its unique mechanism of action, non-toxicity, and good tolerance, allowing for targeted killing of cancer cells without harming healthy tissues. Compared to traditional treatments, siRNA therapy has fewer side effects and can provide long-term and even curative effects. It has also shown promise in the treatment of cardiovascular diseases, gastrointestinal diseases, and hepatitis B.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(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)
