Article
Materials Science, Multidisciplinary
Yanli Song, Yuhang Wu, Jue Lu, Manlin Mei, Lechun Xie, Chuanchuan Hao
Summary: A novel electroshock treatment (EST) technique combined with tensile deformation was proposed to improve the formability of high-strength Al-Zn-Mg-Cu alloy. The results showed that EST significantly increased the elongation and fraction of dynamic recrystallization of the alloy at a temperature below the recrystallization temperature. The microstructural analysis revealed that EST led to a decrease in average grain size, more uniform grain distribution, and improved ability for dynamic recrystallization.
Article
Materials Science, Multidisciplinary
Hyeon-Woo Son, Sung -Ho Kang, Yong -You Kim, Kwangjun Euh
Summary: The effects of microalloying with Ag, Li, and Sc on the hot-extruded microstructures of Al-Mg-Si-Cu alloys were investigated. Each microalloying element had an impact on the hot-deformed microstructure, with Ag-addition having a relatively small effect. Li and Sc additions increased the number of grains with high Taylor factor and their misorientation, indicating a strong anisotropy of slip. Li addition weakened the C component, while Sc addition strengthened the Rt-Cu component and dissipated the recrystallization texture. All microalloying elements slightly increased the dislocation density and fraction of edge dislocations.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Shuai Dai, Huawei Zhang, Zeyu Bian, Jiwei Geng, Zhe Chen, Lei Wang, Mingliang Wang, Haowei Wang
Summary: The study provides insights into the recrystallized behavior and precipitation reaction of the in-situ nano TiB2/Al-Cu-Mg composite during heat treatment. Coefficient thermal expansion difference between TiB2 particles and Al matrix promotes the recrystallized behavior, while the strong pinning effect at recrystallized grain boundary induced by TiB2 is observed. The study also highlights the enhancement of precipitation kinetics by trace Mg and the continuous transformation of theta '' into theta' via atomic Cu rearrangement.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Lei Zhang, Honggang Zhang, Yanzhuo Liu, Shuai Yuan, Jinhui Wang, Lijia Chen, Peipeng Jin
Summary: In this study, the microstructure and deformation behavior of extruded Mg-6Al-1Zn-1.1Sc alloy were investigated. The results showed that the degree of dynamic recrystallization increased as the sampling position approached the outlet of the extrusion die. The alloy exhibited high yield strength due to the combined effects of grain boundary strengthening, texture strengthening, and secondary phase strengthening. The VPSC model successfully simulated the tensile deformation of the extruded alloy with a specific fiber texture.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Jianming Li, Yuting Wu, Hongjun Zhang, Xingzhong Zhang
Summary: During hot deformation of nickel-based superalloys, dislocations undergo various processes such as production, annihilation, and rearrangement into substructures, which have a significant impact on the dynamic recrystallization process. Understanding the relationship between dislocation substructures and recrystallization mechanisms is crucial. Through isothermal compression experiments, the evolution of dislocation substructures and associated recrystallization behaviors were studied in a coarse-grained Co-free nickel-based superalloy. The results showed that dislocation substructures governed the dynamic recrystallization mechanisms and acted as precursors for new grains, while dynamic recovery promoted the transition of dislocation substructures. Continuous dynamic recrystallization was influenced by independent substructures within deformed grains, while discontinuous dynamic recrystallization was influenced by substructures attached to original grain boundaries. The sacrifice of dislocation substructures drove recrystallization kinetics, as the recrystallized volume fraction was inversely proportional to the content of sub-boundaries after deformation. The distance between adjacent sub-boundaries determined the new grain size during continuous dynamic recrystallization, and a weight model was proposed for grain size prediction based on continuous rotation processing.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Mingyang Yu, Yongan Zhang, Xiwu Li, Kai Wen, Haitao Lin, Hua Zhou, Guohui Shi, Zhihui Li, Baiqing Xiong
Summary: This study investigates the effect of recrystallization on the fatigue performance of a high-alloying Al-Zn-Mg-Cu alloy. The results show that the fatigue crack propagation (FCP) rate decreases and then increases as recrystallization deepens, reaching a minimum at a recrystallization fraction of 16.98%. The findings are discussed in terms of recrystallization fraction and grain size using a mathematical model.
Article
Chemistry, Physical
Hyeon-Woo Son, Jae-Cheol Lee, Chang-Hee Cho, Soong-Keun Hyun
Summary: The effect of Mg content on the dynamic recrystallization behavior during hot deformation of Al-Mg alloys was investigated. The results showed that Mg content affected the strain dependence of dislocation parameters, with higher Mg content increasing the dynamic recrystallization rate and inducing flow softening at relatively low strains.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Chuang Yu, Haitao Zhang, Yabiao Zhang, Jing Zou, Cheng Guo, Hao He, Guangming Xu, Baomian Li, Jianzhong Cui
Summary: The influence of Mo on the microstructure evolution of Al-Cu-Mg-Ag alloy was investigated using high-throughput double cone specimens. The addition of 0.2% Mo resulted in the formation of Al-6(Fe, Mn, Mo) dispersoids, which exhibited different distribution patterns in the interdendritic regions and dendrite cores. The presence of Al-6(Fe, Mn, Mo) dispersoids significantly affected the transformation of grain boundaries and the nucleation and growth of dynamic recrystallization grains.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Xin Wang, Justin Cortez, Alexander D. Dupuy, Julie M. Schoenung, William J. Bowman
Summary: This study provides experimental evidence of room temperature deformation in high entropy oxides (HEOs) and reveals different deformation mechanisms in micrometer-grain and nanometer-grain states.
MATERIALS RESEARCH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Qi Zhao, Zhiyi Liu
Summary: To obtain a strong Goss texture in Al-Cu-Mg alloy sheet, texture evolution and related mechanisms during solution treatment were studied. It was found that the Goss texture can further develop during solution treatment, which is attributed to the growth of recrystallized Goss grains into deformed Brass grains and the slow growth of recrystallized Goss grains into substructured random grains. The effect of particles stimulated nucleation (PSN) on Goss texture formation and development was also revealed, showing that large Fe-rich phases restrict Goss grain nucleation and growth while relatively small θ and S phases do not hinder the development of Goss texture.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Shiyang Liu, Hongyi Zhan, Damon Kent, Qiyang Tan, Yu Yin, Nghiem Doan, Chang Wang, Matthew Dargusch, Gui Wang
Summary: This study investigates the impact of Mg additions on the deformation behaviors and dynamic recrystallization mechanisms of Zn-Mg alloys during room temperature compression. Low Mg content alloy exhibited continuous and twin-induced dynamic recrystallization, resulting in a uniform and refined microstructure with excellent properties. High Mg content alloy showed complex recrystallization mechanisms, with particle-induced dynamic recrystallization influenced by eutectic structures leading to partially recrystallized microstructure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
B. Sulkowski, R. Chulist
Summary: The effect of texture on alloy properties and the evolution of texture during hot extrusion of Mg were studied through experiments and simulations. A model based on a viscoplastic formulation was extended to a cellular automaton procedure to consider recrystallization mechanisms. The main textural components were identified for each deformation temperature and a mechanism for their formation was proposed.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Yu-qin Zhang, Wei-li Cheng, Hui Yu, Hong-xia Wang, Xiao-feng Niu, Li-fei Wang, Hang Li
Summary: This study systematically investigated the twinning behavior, dynamic recrystallization (DRX) mechanism, and texture evolution of extruded Mg-xBi (x=0.5 wt.%, 2.0 wt.%) alloys during hot compression. The results show that the texture types and intensities are closely related to twinning behavior and DRX mechanism. The formation and variation of {10 (1) over bar2} extension twins dominate the early evolution of texture, while the DRX mechanism plays a greater role as the strain increases.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Shilong Wei, Richu Wang, Hui Zhang, Chunting Xu, Ying Wu, Yan Feng
Summary: The Cu/Mg ratio affects the precipitation rate and mechanical properties of Al-Zn-Mg-Cu alloys, with alloys with lower Cu/Mg ratio exhibiting higher strength and slower coarsening rate. As the Cu/Mg ratio increases, the fracture mode changes from brittle to ductile, and alloys with higher Cu/Mg ratio have coarser and wider grain boundary precipitates.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Yu-Ying He, Gang Fang
Summary: In this study, the dynamic precipitation (DP) of Mg17Al12 phase during the deformation of an Mg-Al-Zn-RE alloy was investigated. The effects of temperature and strain rate on the volume fraction, number density, and average size of Mg17Al12 precipitates were studied. Phenomenological models linking the precipitation parameters with deformation conditions were established and validated. The pinning effect of DP on grain growth and the influence of temperature on DRXed grain size were also discussed. The results provide insights into the understanding of microstructural evolution in the Mg-Al-Zn-RE alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wenting Wu, Zhiyi Liu, Yangcheng Hu, Fudong Li, Song Bai, Peng Xia, An Wang, Chengwu Ye
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Materials Science, Multidisciplinary
Lai Chen, Diping Zeng, Zhiyi Liu, Song Bai, Junlin Li
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Article
Materials Science, Multidisciplinary
Lianghua Lin, Zhiyi Liu, Xiangnan Han, Wenjuan Liu
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Article
Materials Science, Multidisciplinary
Peng Xia, Zhiyi Liu, Wenting Wu, Qi Zhao, Luqing Lu, Song Bai
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Review
Materials Science, Multidisciplinary
Shasha Li, Qi Zhao, Zhiyi Liu, Fudong Li
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Article
Materials Science, Multidisciplinary
Lianghua Lin, Zhiyi Liu, Wenjuan Liu, Yaru Zhou, Tiantian Huang
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2018)
Article
Materials Science, Multidisciplinary
Qi Zhao, Zhiyi Liu, Song Bai, Shasha Li, Yangcheng Hu, Peng Xia
MATERIALS CHARACTERIZATION
(2018)
Article
Nanoscience & Nanotechnology
Fei Liu, Zhiyi Liu, Meng Liu, Yangcheng Hu, Ye Chen, Song Bai
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Chemistry, Physical
Yangcheng Hu, Zhiyi Liu, Qi Zhao, Song Bai, Fei Liu
Article
Materials Science, Multidisciplinary
Fei Liu, Zhiyi Liu, Meng Liu, Yangcheng Hu, Ye Chen, Song Bai
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2019)
Article
Materials Science, Multidisciplinary
Ye Chen, Zhiyi Liu, Song Bai, Juangang Zhao, Guanhua Liu
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2019)
Article
Nanoscience & Nanotechnology
Song Bai, Xinlei Yi, Guanhua Liu, Zhiyi Liu, Jian Wang, Juangang Zhao
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
Lei Luo, Zhiyi Liu, Song Bai, Jing Cao, Fei Liu, Linnan Ou, Juangang Zhao
Summary: This study investigates the microstructures and mechanical properties of a hot extruded Al-Zn-Mg-Cu alloy pipe with variable cross-section. It is found that the changes in hot deformation degrees contribute to the variable temperature distribution along the extrusion direction. The profiles of the extruded pipe exhibit dynamic recovery (DRV), partial dynamic recrystallization (DRX), and an exponential increase in high-angle grain boundaries fraction.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Tiantian Huang, Fei Liu, Zhiyi Liu, Guangyu He, Yangcheng Hu
Summary: The passage introduces a mechanism of dislocation multiplication in an Al alloy, where the surface of the Al20Cu2Mn3 phase can hinder dislocation movement. It discusses how dislocations with opposite Burgers vectors can annihilate if they come within a critical distance, forming a dislocation loop or a tangle that promotes dislocation multiplication. The driving force for dislocation reproduction, the dislocation glide velocity, and the rate of dislocation multiplication are also considered.
PHILOSOPHICAL MAGAZINE LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Qi Zhao, Zhiyi Liu
Summary: To obtain a strong Goss texture in Al-Cu-Mg alloy sheet, texture evolution and related mechanisms during solution treatment were studied. It was found that the Goss texture can further develop during solution treatment, which is attributed to the growth of recrystallized Goss grains into deformed Brass grains and the slow growth of recrystallized Goss grains into substructured random grains. The effect of particles stimulated nucleation (PSN) on Goss texture formation and development was also revealed, showing that large Fe-rich phases restrict Goss grain nucleation and growth while relatively small θ and S phases do not hinder the development of Goss texture.
JOURNAL OF MATERIALS SCIENCE
(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)
