Article
Materials Science, Multidisciplinary
A. R. Eivani, S. M. Mirghasemi, S. H. Seyedein, J. Zhou, H. R. Jafarian
Summary: This research aimed to lower the deformation temperature of AZ31 magnesium alloy samples by applying cover tube casing (CTC) and incorporating the Cockcroft Latham (C & L) fracture model into finite element simulation. The results showed that increasing CTC thickness improved the workability of the alloy and enabled the production of high-quality products with a uniform grain structure at lower temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Tingbiao Guo, Yang Gao, Xiaoyang Tai, Junjie Wang, Rui Feng, Danchen Qian, Yutian Ding, Zhi Jia
Summary: This study investigates the effects of severe plastic deformation (SPD) and aging treatment on the microstructure and properties of CuCrZr alloy. It is found that plastic deformation transforms the initial equiaxial crystals into a fibrous structure, and with increasing strain, the texture undergoes strong undulation. Aging treatment intensifies the distribution of nanoscale precipitation along grain boundaries. After 4 passes and aging treatment, the strength, hardness, and conductivity of the alloy continuously increase.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Walaa Abdel-Aziem, Atef Hamada, Takehiko Makino, Mohsen A. Hassan
Summary: The study focused on the micro/meso-forming of commercially pure aluminum AA1070 through 4 deformation passes using ECAP at room temperature. The findings showed that as the number of passes increased, there was a transition from a non-uniform grain structure to a uniform ultrafine-grained structure, resulting in a significant improvement in hardness. Additionally, the micro/meso-scale ECAP was capable of developing a weak texture in the flow plane compared to the starting texture.
METALS AND MATERIALS INTERNATIONAL
(2021)
Review
Materials Science, Multidisciplinary
Qian Zhang, Quanan Li, Xiaoya Chen
Summary: This paper introduces the research status of Equal Channel Angular Pressing (ECAP) in preparing ultrafine grained magnesium alloy, summarizing the research results of recent ten years including the ECAP process, deformation mechanism, microstructure characteristics, texture evolution, and mechanical properties of the alloy. The paper also discusses the need to comprehensively consider the influences of grain refinement and texture evolution on mechanical properties, as well as the progress in ECAP numerical simulation analyzing the effects of process parameters. Additionally, the paper introduces the development trend and application prospect of ECAP process in commercial manufacturing, along with proposing solutions for urgent problems in current research.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Nanoscience & Nanotechnology
Xiuping Wang, Yan Ma, Bao Meng, Min Wan
Summary: The ultrafine-grained Zn alloy fabricated by ECAP process showed significant grain refinement and texture change, resulting in enhanced yield strength. An optimal combination of yield strength and elongation was achieved after multiple ECAP passes, balancing the mechanical properties of the material.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Hongfei Wang, Chunyan Ban, Nannan Zhao, Lei Li, Qingfeng Zhu, Jianzhong Cui
Summary: In this study, pure titanium samples with a purity of 99.99 wt.% were successfully processed by ECAP at cryogenic temperature, leading to significant grain refinement and increased hardness. The activation of slip systems during deformation process was observed, and the influence of temperature on grain refinement was discussed. Factors affecting the homogeneity of microstructure were also analyzed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Weiyang Wang, Shuang Zhou, Zhu Xiao, Wenting Qiu, Qian Lei
Summary: This study investigated the microstructure evolution and properties of a CuCrZrSc alloy undergoing aging treatment and equal channel angular pressing (ECAP). The results showed that pre-aging treatment significantly improved the mechanical properties and electrical conductivity of the alloy. After 12 passes of deformation and aging treatment, the alloy exhibited enhanced mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Christian Illgen, Benjamin Bohne, Martin F. -X. Wagner, Maximilian Gruber, Wolfram Volk, Philipp Frint
Summary: A new approach for equal-channel angular pressing (ECAP) of thin AA5083 sheets using two different orientations has been investigated, leading to considerable grain refinement and increased tensile strength. Multiple ECAP passes and microstructural analyses show that the modified experimental method can produce (ultra)fine-grained thin aluminum sheets with enhanced strength and ductility.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Metallurgy & Metallurgical Engineering
Yong Li, Yi Xiong, Tian Zhou, Harishchandra Singh, Jukka Koemi, Marko Huttula
Summary: Equal-channel angular pressing (ECAP) of granular pearlite high-carbon steel at 650 degrees C via the Bc route was thoroughly investigated in this study. The microstructure evolved to an ultra-microduplex structure, with changes in microhardness, tensile strength, yield strength, and yield ratio. Fracture morphology shifted from deep dimples to small dimples, indicating a typical ductile fracture of the pearlitic steel after ECAP application.
STEEL RESEARCH INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Anton Hohenwarter, Reinhard Pippan
Summary: This study focuses on the fracture properties of pure iron deformed at 200 degrees C by equal angular channel pressing, evaluating the fracture toughness for different specimen orientations and comparing the results with material processed by a different route. The findings indicate that route B-C offers higher fracture toughness compared to route A.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Meshal Y. Alawadhi, Shima Sabbaghianrad, Yi Huang, Terence G. Langdon
Summary: The research shows that processing oxygen-free copper through equal-channel angular pressing at room temperature can alter its microstructure and mechanical properties, indicating the occurrence of dynamic recovery in tensile testing.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Daniel Melzer, Ivan Smirnov, Ondrej Lukas, Jaromir Dlouhy, Alexey Evstifeev, Jan Dzugan, Ruslan Valiev
Summary: The study presents a comprehensive plasticity analysis applied to aluminum alloy after severe plastic deformation (SPD) processing, showing that plasticity strength strongly depends on a combination of stress triaxiality and Lode angle parameter. Materials after ECAP processing exhibit slightly higher values in the fracture locus of equivalent strain to fracture. This approach allows for estimating the ultimate plasticity of materials after ECAP processing and predicting fractures in plastic deformation processes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Automation & Control Systems
Maximilian Gruber, Christian Illgen, Felix Lichte, Christoph Hartmann, Philipp Frint, Martin F. -X. Wagner, Wolfram Volk
Summary: This paper investigates the application of Equal-Channel Angular Pressing (ECAP) process on sheet metal. The study solves the problem of crack formation in aluminum AA5083 sheets during ECAP by applying a backpressure of 10 MPa, resulting in crack-free sheets. Mechanical tests and microstructure analysis show a significant increase in yield strength (+157%) and a decrease in elongation to failure (-73%) compared to the initial condition of the material.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Y. L. Bian, Z. D. Feng, N. B. Zhang, Y. X. Li, X. F. Wang, B. B. Zhang, Y. Cai, L. Lu, S. Chen, X. H. Yao, S. N. Luo
Summary: This study investigates the processing of a high-entropy alloy through dynamic equal channel angular pressing (D-ECAP) and subsequent annealing, and observes the occurrence of kink bands within a face-centered cubic HEA. The strengthening mechanisms are discussed.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
M. Nagaraj, Suresh Neelakantan
Summary: The effect of equal channel angular pressing (ECAP) strain on the grain size and mechanical properties of cp-Ti was studied. The 4th pass ECAP sample showed ultrafine grains and enhanced strength compared to the annealed sample. The tribocorrosion behavior in simulated body fluid was also evaluated, showing lower friction coefficient and wear loss for the 4th pass sample due to its enhanced strength.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Xinwei Wang, Jie Xu, Debin Shan, Bin Guo, Jian Cao
MATERIALS & DESIGN
(2017)
Article
Chemistry, Physical
Tongtong Xu, Yaping Han, Lei Lin, Jie Xu, Qiang Fu, He He, Bingqian Song, Qiying Gai, Xianjie Wang
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Multidisciplinary
Chaogang Ding, Jie Xu, Xuewen Li, Debin Shan, Bin Guo, Terence G. Langdon
ADVANCED ENGINEERING MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Wanji Chen, Jie Xu, Detong Liu, Jianxing Bao, Shima Sabbaghianrad, Debin Shan, Bin Guo, Terence G. Langdon
ADVANCED ENGINEERING MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Jianxing Bao, Wanji Chen, Jianan Bai, Jie Xu, Debin Shan, Bin Guo
Summary: Electric current induced local softening behaviors of Ti-6Al-4V alloy were investigated using electrically-assisted micro-compression tests in this study. It was found that at higher current density and larger strain rate, there was local softening dominated by uneven distribution of Joule heat temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Automation & Control Systems
Yongda Liu, Jie Xu, Zhengwu Zhang, Gang Liu, Debin Shan, Lixin Zhang, Bin Guo
Summary: In this study, the shape control of a micro-extruded aluminum alloy MHP was successfully achieved. The effects of size on material flow deformation behavior in micro-extrusion were investigated, and it was found that lower ram speed is beneficial for forming integrity and surface quality of the extruded profiles. The failure mechanism for micro-grooves during micro-extrusion was attributed to uneven material flow caused by size effect. The microstructure analysis revealed that using as-extruded billets in micro-extrusion resulted in coarser grains and different texture components compared to using as-cast billets.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Junbei Hu, Xianjie Wang, Lei Lin, Jie Xu, Mengting Liu, Ran Wang, Xiaofeng Li, Lingling Tao, Yu Sui, Bo Song
Summary: In this paper, a high-performance position-sensitive detector and laser communication sensor based on CsPbBr3/4H-SiC heterojunction were reported. The thickness of CsPbBr3 film played a key role in open-circuit voltage and linear photovoltaic effect. The detector exhibited a fast relaxation time and a large position sensitivity, with the shortest relaxation time achieved under 532 nm laser irradiation.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Tiansheng Wang, Shunyou Hu, Wen Yu, Yuanyuan Hu, Shangcheng Yan, Mi Wang, Weiwei Zhao, Jie Xu, Jiaheng Zhang
Summary: A hybrid system electrode composed of porous lignin-based graphitic carbon (PLGC) and small herbal biomolecules such as Rhein (RH) is demonstrated to enhance specific capacitance and cycle stability in biomass electrode materials. The RH molecules derived from rhubarb root extracts increase energy storage capacity, while the PLGC provides an effective platform for bulk charge transport. The RH/PLGC composite electrodes exhibit high specific capacitance and capacity fading is effectively suppressed using an RH-saturated electrolyte, making it suitable for large-scale production.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Ximin Yuan, Chengrui Guo, Zhenjia Wang, Hongwei Jiang, Yong He, Jie Xu, Bin Guo
Summary: In recent years, researchers have extensively studied flexible electronic devices. However, the lack of biocompatibility and degradability in vivo has hindered the development of flexible electronics that can be implanted in the body to monitor heart health. Gelatin methacryloyl (GelMA), a gelatin-based hydrogel, is known for its unique biocompatibility and has been widely used in bioengineering. Liquid metal, particularly GaInSn alloy, has low toxicity, excellent rheology, and outstanding electrical conductivity, making it a preferred material for flexible electronics related to bodily functions. We investigated the combination of liquid metal with hydrogels to create implantable flexible electronics. By controlling the replacement rate of functional groups in gelatin, we successfully prepared a hydrogel with excellent mechanical properties. We then integrated liquid metal into the hydrogel to develop implantable liquid metal-based flexible electronic devices (LMFE), which can detect heart-related conditions and monitor the physical state of humans during exercise.
ACS APPLIED ELECTRONIC MATERIALS
(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)
