Article
Materials Science, Multidisciplinary
Longhui Mao, Chuming Liu, Yingchun Wan, Tao Chen, Shunong Jiang, Zhiyong Chen
Summary: The study examined the twinning behavior in a rolled Mg-Al-Zn alloy under compression and tension along different directions. It was found that the loading mode greatly influences the twinning behavior, with different twin variants observed in samples under different deformation modes. The variations in yield stress and strain-hardening behavior between the two conditions are likely attributed to the differences in twinning characteristics.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
Nicolo Maria della Ventura, Peter Schweizer, Amit Sharma, Manish Jain, Thomas Edward James Edwards, J. Jakob Schwiedrzik, Cinzia Peruzzi, Roland E. Loge, Johann Michler, Xavier Maeder
Summary: The strain rate and temperature dependent mechanical response of single crystal magnesium micropillars compressed along the a-axis was investigated. It was found that extension twinning controlled the plasticity at temperatures below 423K, while prismatic dislocation mediated plasticity dominated at temperatures above 423K and strain rates below 10s-1. At higher strain rates, deformation twinning occurred again. The study also provided a detailed analysis of the transition from slip to twin and the influence of thermal and kinetic contributions on the flow stress evolution.
Article
Materials Science, Multidisciplinary
Amir Hassan Zahiri, Luiz Carneiro, Jamie Ombogo, Pranay Chakraborty, Lei Cao
Summary: The study investigates the structure and formation mechanism of {11 (2) over bar2} twin-twin boundaries in Mg, revealing alignment with {11 (2) over bar2} or {11 (2) over bar6} planes. These boundaries significantly contribute to the understanding of twinning theories in Mg.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Metallurgy & Metallurgical Engineering
Yuxuan Liu, Yangxin Li, Qingchun Zhu, Huan Zhang, Xixi Qi, Jinhui Wang, Peipeng Jin, Xiaoqin Zeng
Summary: The study on static recrystallization of a high strain rate compressed Mg-1 Zn alloy found that obtaining more compression twins or coarse twins instead of lenticular tension twins can effectively manipulate the recrystallization process.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Metallurgy & Metallurgical Engineering
H. Wang, X. Sun, S. Kurukuri, M. J. Worswick, D. Y. Li, Y. H. Peng, P. D. Wu
Summary: Manufacturers have developed magnesium alloys with remarkable properties by adding rare-earth elements to overcome the limitation in formability at room temperature. The rare-earth magnesium alloys behave differently from conventional alloys, especially in terms of their anisotropic and strain rate sensitive behavior. This study investigates the behavior of a rare-earth Mg alloy ZEK100 sheet at room temperature using an elastic viscoplastic self-consistent polycrystal plasticity model. Different strain rate sensitivities are employed by the model to simulate the strain rate sensitive behaviors under different loading directions and rates. The study highlights the importance of using different strain rate sensitivities for each deformation mode in hexagonal close-packed metals.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Jae-Yeon Kim, Ki-Tae Yoo, Jai-Won Byeon
Summary: In this study, the effects of discontinuous precipitate (DP) and continuous precipitate (CP) on the tensile elongation and fracture mechanism of aging-treated AZ91D Mg alloy were investigated. The increase in area fraction of DPs was found to cause a slight decrease in tensile elongation due to cracking along grain boundaries. Experimental results also showed that a large number of fine tension twins were produced within a few percent of tensile elongation for specimens with high CP/alpha-Mg interfaces per unit volume, leading to premature fracture.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Luiz Carneiro, Duke Culbertson, Qin Yu, Yanyao Jiang
Summary: The study experimentally characterized the mechanical response and microstructure evolution of a rolled AZ31B magnesium alloy using companion thin-walled tubular specimens under free-end monotonic torsion. It was found that the shear stress-shear strain response exhibits a sigmodal shape with four distinctive stages of strain hardening, involving basal slips, tension twinning, and compressing twinning. The formation of twin-twin boundaries (TTBs) and the collective hardening effects by twin boundary (TB) and TTB contribute to a unique rise in strain hardening rate in certain stages. Further observations of different types of twins and their interactions provide insights into the deformation mechanisms during different stages of the process.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yang Chen, Pingli Mao, Zhi Wang, Gengsheng Cao
Summary: The study showed that {10 (1) over bar2} tensile twinning dominates the early plastic deformation in Mg-3Al-1Zn (AZ31) magnesium alloy, and the area fraction of {10 (1) over bar2} tensile twins increases with the increase of deformation strain. Beyond 10% deformation strain, plastic deformation is mainly dominated by dislocation slips.
MATERIALS SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Chong Yang, Guoguo Zhu, Bin Li, Yan Peng, Baodong Shi
Summary: The difference in mechanical behavior between fixed-end and free-end torsion is investigated in this study. The end constraint affects the strain hardening behavior, with fixed-end torsion dominated by prismatic slip and free-end torsion exhibiting two stages of strain hardening. The axial effect is sensitive to forward and reversal torsion, and the difference in axial stress under fixed-end torsion is attributed to twin growth.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
G. S. Duan, Z. W. Guan, L. H. Song, Y. H. Chu, J. X. Zhou, X. H. Du, B. L. Wu, C. Esling
Summary: Due to the strain rate sensibility of magnesium alloys, the ratcheting behavior under cyclic loading was investigated and discussed at different frequencies. The results showed that the ratcheting strain and fatigue life exhibited two trends with frequency. In the frequency range of 0.02 Hz to 0.4 Hz, the ratcheting strain decreased and the fatigue life increased. In contrast, in the frequency range of 0.4 Hz to 2.0 Hz, the ratcheting strain increased and the fatigue life decreased. The frequency effect depended on the weight of the slip and twinning deformation mechanisms, which were related to strain rate, showing dual frequency domain characteristics.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Lin Li, Jie Yang, Zhiyuan Yang, Qi Sun, Li Tan, Qinghui Zeng, Minhao Zhu
Summary: Deformation twins play a crucial role in plastic deformation and affect the microstructural evolution and fatigue behavior of magnesium alloys. The study investigated the fatigue behavior of a rolled magnesium alloy using SEM and EBSD, revealing that {1012} twinning dominates the fatigue deformation process and residual twins increase with fatigue cycles. Cracks tend to initiate and propagate along {1012} twinning boundaries and slip bands, with numerous extrusions found in twinned areas.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Zixiang Yan, Qiang Yang, Fanzhi Meng, Rui Ma, Rirong Bao, Xiaojuan Liu, Jian Meng, Xin Qiu
Summary: In this study, interfacial precipitation in {10 (1) over bar2} twin boundaries of a cold-stamped Mg-12Gd-1.2Zn-0.4Zr alloy was investigated, revealing the formation of new interfacial phases which accelerated peak-aging and improved the alloy's strength. This periodic segregation of Gd + Zn atoms in the twin boundaries played a crucial role in enhancing the mechanical properties of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Crystallography
Yudong Lei, Mei Zhan, Hai Xin, Lifeng Ma, Yuan Yuan, Hongrui Zhang, Zebang Zheng
Summary: The initial texture effect of strain rate sensitivity in magnesium alloys was studied using quasi in situ electron backscatter diffraction. The strain accumulations showed strain rate dependency under uniaxial loading. For AZ31 magnesium sheets with strong basal texture, twinning first occurs at the onset of deformation, resulting in macroscopic strain rate insensitivity. With further loading, strain rate sensitivity increases significantly due to slip initiation. For WE43 alloy sheets with weak basal texture, overall deformation is sensitive to strain rate under both tensile and compression. Twinning growth rate and twinned volume fraction are used to identify twin-dominated or slip-dominated process during plastic deformation of magnesium alloy.
Article
Materials Science, Multidisciplinary
Chao Lou, Yi Ren, Qingshan Yang, Liping Meng
Summary: This study investigates the influence of local stress state induced by twin-twin interaction on the microstructural evolution in compressed Mg single crystals. The results reveal that the interaction between twins leads to the formation of a local stress field, and the degree of stress concentration increases with further twin-twin interaction. On the twin-twin junction, the local stress caused by interaction induces a local lattice rotation of incoming twins, aligning their orientation with that of encountering twins. The size difference between interacting twins may be an important factor contributing to the merger interaction.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Filip Siska, Ludek Stratil, Jan Cizek, Tingting Guo, Matthew Barnett
Summary: This paper investigates the interactions between {10 (1) over bar2} ten sile twin and precipitates aligned along basal planes in magnesium alloys. The results show that precipitates influence the shear stress necessary to accommodate twins, and the thickness of precipitates plays a crucial role in twin thickening and propagation.
Article
Materials Science, Multidisciplinary
Liping Deng, Ke Han, Bingshu Wang, Xiaofang Yang, Qing Liu
Article
Metallurgy & Metallurgical Engineering
Li-Ping Deng, Bing-Shu Wang, Hong-Liang Xiang, Xiao-Fang Yang, Rong-Mei Niu, Ke Han
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2016)
Article
Materials Science, Multidisciplinary
Ning Guo, Bo Song, Hongbing Yu, Renlong Xin, Bingshu Wang, Tingting Liu
MATERIALS & DESIGN
(2016)
Article
Materials Science, Multidisciplinary
Jingjing Shi, Kaixuan Cui, Bingshu Wang, Liping Deng, Chen Wang, Zeren Xu, Qiang Li
MATERIALS CHARACTERIZATION
(2017)
Article
Metallurgy & Metallurgical Engineering
Chen Wang, Hao Ding, Bing-Shu Wang, Kui Wang, Jing-Jing Shi, Jun-Feng Chen
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2017)
Article
Chemistry, Physical
Chen Wang, Hui Zheng, Hao Ding, Xiaocao Hu, George C. Hadjipanayis, Bingshu Wang, Junfeng Chen, Xigui Cui
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Nanoscience & Nanotechnology
Bingshu Wang, Jingjing Shi, Peng Ye, Liping Deng, Chen Wang, Junfeng Chen, Xiaohua Yang, Qiang Li
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Materials Science, Multidisciplinary
Chen Wang, Kui Wang, Hao Ding, Xiaobo Xiao, Bingshu Wang, JunFeng Chen, Weilin Zhang, Lei Zhao, Xing Yu
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Chen Wang, Kui Wang, Hao Ding, Xiaobo Xiao, Bingshu Wang, JunFeng Chen, Weilin Zhang, Lei Zhao, Xing Yu
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Liping Deng, Bingshu Wang, Ke Han, Rongmei Niu, Hongliang Xiang, Karl T. Hartwig, Xiaofang Yang
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Bingshu Wang, Jingjing Shi, Peng Ye, Liping Deng, Ning Guo, Chen Wang, Junfeng Chen, Qiang Li
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Liping Deng, Zhifeng Liu, Bingshu Wang, Ke Han, Hongliang Xiang
MATERIALS CHARACTERIZATION
(2019)
Article
Nanoscience & Nanotechnology
Bingshu Wang, Huimin Liu, Yonggan Zhang, Baoxue Zhou, Liping Deng, Chen Wang, Junfeng Chen, Yonghao Zhang
Summary: The study investigated the effect of grain size on deformation twinning behavior in pure titanium during uniaxial compression, using electron backscattered diffraction (EBSD) technology. Results showed that small initial grains led to higher yield strength due to greater deformation coordination ability, with more twin variants and twin lamellae activated as the grain size increased. Grain size also influenced the type and structures of twin-twin interactions, affecting twin growth and material hardening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Wang Chen, Wang Kui, Xia Xiao-bo, Ding Hao, Wang Bing-Shu, Mao Chao-wu, Zhang Wei-lin, Jin Gang-nan
CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING
(2018)
Article
Metallurgy & Metallurgical Engineering
Wang Bingshu, Deng Liping, Adrien Chapuis, Guo Ning, Li Qiang
ACTA METALLURGICA SINICA
(2015)
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)
