Article
Materials Science, Multidisciplinary
Kai Zhang, Jun Jiang
Summary: Compression tests were conducted on Mg-3Al-1Zn alloy at room and cryogenic temperatures to study its low-temperature plasticity. The experiment found that the strain to failure and fracture strength of the alloy increased by 21.4% and 51.6% respectively at cryogenic temperature compared to room temperature. The study also discovered that at room temperature, {10 1 2} tension twins dominated, while at cryogenic temperature, there were abundant (10 (1) over bar 2)-(01 (1) over bar 2) twin-twin interactions. The presence of multiple slips, such as pyramidal and basal slips, in twin-twin interactions enhanced the strain to failure and flow stress at cryogenic temperature.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
C. Haug, D. Molodov, P. Gumbsch, C. Greiner
Summary: Tribological loading induces microstructural changes in metals through dislocation-mediated plastic deformation. Crystal lattice rotations play an important role in friction and wear at the sliding interface, and are influenced by sliding direction and grain orientation.
Article
Materials Science, Multidisciplinary
Xiaolong Zhang, Hongli Suo, Zili Zhang, Stuart C. Wimbush, Ma Lin, Liu Min, Yaotang Ji, Xufeng Wang, Mengxing Li, Qiuliang Wang
Summary: This study investigates the crystal orientation evolution and superconducting properties changes of REBCO superconductor tape under severe deformation. In-situ electron backscatter diffraction is used to observe the crystal orientation evolution in real-time, while the critical current and its angle dependence are measured under different tensile stresses. By comparing the microscopic and macroscopic results, the synergetic evolution mechanism is established, revealing the degradation mechanism of REBCO tapes and providing insight for improving their electromechanical properties.
Article
Metallurgy & Metallurgical Engineering
Yang Yang, Jun-yi Huang, Hai-min Wang, Ji-xiong Chen, Zhao-liang Guo
Summary: A series of detonation experiments were conducted to study the grain boundary effects during the primary spallation of high-purity copper cylinder. The results indicated that the critical stress of deformation twinning in cylindrical copper increased, and the nucleation sites of spallation damage were influenced by both the grain orientation and the angle between grain boundaries and radial impact-stress direction.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Metallurgy & Metallurgical Engineering
R. B. Heidari, M. Eskandari, M. Yeganeh
Summary: The study investigates the microstructure and texture changes of thermomechanically processed 310S austenitic stainless steel. Cryo-rolling with different thickness reductions and subsequent annealing were conducted. Deformation twinning and strain-induced alpha'-martensite were observed after 20% thickness reduction, with higher volume fraction of twinning. With increased deformation, martensite replaced twinning and the volume fraction of martensite increased. Brass, Goss, and S components were dominant textures in the austenite phase, while R-Cu, R-cube, F, and E were the main components in alpha'-martensite. Annealing led to martensite to austenite reversion and recrystallization in the deformed austenite, resulting in increased fractions of Goss and Brass recrystallization components. The annealing texture was similar to the cryo-rolling texture. Martensite reversion was faster at 1223 K for 5 min compared to 1023 K. The optimum annealing temperature for an ultrafine grain structure was found to be 1023 K for 15 min.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Multidisciplinary Sciences
Michael Chapman, Marc De Graef, Richard D. James, Xian Chen
Summary: The article introduces a scheme for assigning martensite variant in martensite materials undergoing solid-solid phase transformation using electron backscatter diffraction. It offers an algorithm to assign martensite variants to specific microscopic regions and to check the elastic compatibility of microstructures in shape memory alloys with low hysteresis and high reversibility. This study is part of the theme issue on mathematical design of complex materials.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Chemistry, Physical
Iztok Naglic, Blaz Leskovar, Zoran Samardzija, Bostjan Markoli
Summary: This study investigated the influence of gallium addition on the phases formed in Al-Mn alloys during casting, revealing that an increase in gallium content led to the formation of IQCs and DQCs in the alloys. Microanalysis showed that IQCs contained more gallium and less manganese compared to DQCs.
Article
Chemistry, Physical
M. Myshlyaev, G. Korznikova, T. Konkova, E. Korznikova, A. Aletdinov, G. Khalikova, G. Raab, S. Mironov
Summary: In this study, the advanced capabilities of electron backscatter diffraction (EBSD) were used to investigate the role of dynamic recrystallization in the superplastic deformation of a fine-grained material. The results showed that dynamic recrystallization occurred only locally and had a minor contribution to microstructural evolution. Therefore, the preservation of the nearly-equiaxed grain morphology associated with superplasticity cannot be attributed to dynamic recrystallization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Civil
Daniel Wojtas, Lukasz Maj, Krzysztof Wierzbanowski, Anna Jarzebska, Robert Chulist, Jakub Kawalko, Klaudia Trembecka-Wojciga, Magdalena Bieda-Niemiec, Krzysztof Sztwiertnia
Summary: This study investigates the microstructure evolution of commercially pure titanium during hydrostatic extrusion using advanced techniques such as electron backscatter diffraction and transmission electron microscopy. The study reveals that hydrostatically extruded titanium exhibits an exceptionally inhomogeneous microstructure with discrepancies in grain size and shape, abundant dislocation-type features, and stored deformation energy. Grain subdivision and continuous dynamic recrystallization are identified as the main mechanisms governing microstructural development at different deformation levels.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Chemistry, Physical
S. Mironov, S. Zherebtsov, S. L. Semiatin
Summary: Microstructure evolution during abc deformation of commercial-purity titanium were investigated, and it was found that continuous dynamic recrystallization played a dominant role in the microstructural changes. CDRX developed preferentially at the original grain boundaries, resulting in a necklace-type microstructure. Changes in strain path led to re-organization of the pre-existing dislocation structure and essential material softening. These findings are important for understanding and controlling the microstructure of titanium materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Min-Su Lee, Jeong-Rim Lee, Jong Bae Jeon, Jong Woo Won, Yong-Taek Hyun, Tea-Sung Jun
Summary: In this study, the tensile deformation behavior of CP-Ti plate was investigated in both the rolling and transverse directions using in-situ SEM-EBSD testing and stress-relaxation method. It was found that different slip systems were activated in the two directions, with prismatic slip dominant in the rolling direction and higher activity of non-prismatic slip systems in the transverse direction. Slip transfer was observed in the transverse direction, promoting multiple slips and dislocation interactions, while limited slip transfer indicated strong dislocation pinning at the grain boundaries in the rolling direction. The formation of grain boundary ledges and sinks was pronounced in the rolling and transverse directions, respectively, and they contributed to the anisotropy in the strain-hardening behavior of polycrystalline a-Ti.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Kai Zhang, Jing-Hua Zheng, Christopher Hopper, Chaoyang Sun, Jun Jiang
Summary: The study shows that the mechanical properties of magnesium alloy (WE43) can be significantly improved at cryogenic temperatures, especially when the compression direction is perpendicular to the extrusion direction. This improvement is attributed to enhanced pyramidal slip.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Mikhail Myshlyaev, Sergey Mironov, Galia Korznikova, Tatyana Konkova, Elena Korznikova, Ainur Aletdinov, Gulnara Khalikova, George Raab, Sheldon Lee Semiatin
Summary: The application of Electron backscatter diffraction (EBSD) revealed that microstructural changes in a fine-grain Al-Mg-Li alloy during superplastic behavior were significantly influenced by continuous dynamic recrystallization. This mechanism involved the transverse subdivision of pre-elongated grains transforming into chains of nearly-equiaxed grains. Experimental observations, including significant strain hardening, grain elongation, and the development of crystallographic texture, provided strong evidence of intragranular slip operating during superplastic flow.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Chun-Hao Chen, Yu-Chang Lai, Tung-Han Chuang
Summary: The microstructural evolution of Ag-4Pd ribbon under various annealing conditions was investigated in this study using the EBSD technique. The results showed abnormal grain growth after prolonged annealing treatment, with calculated grain growth time exponent (n) and activation energy providing insights into the dominance of grain boundary diffusion in the material. The deviation of n value and activation energy from those of pure silver could be attributed to alloying elements and twin boundaries within the microstructure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Multidisciplinary
Jinyoung Park, Joo-Hee Kang, Eui Pyeong Lee, Young Ho Ko, Sun Bae Bang
Summary: A new methodology using electron backscatter diffraction (EBSD) was proposed to quantitatively analyze molten marks at fire sites, revealing distinct microstructural differences between different types of molten marks. Discriminant parameters such as grain aspect ratio (GAR) and (001) fraction perpendicular to the demarcation line were identified for classification of the molten marks.
Article
Chemistry, Physical
T. Konkova, S. Mironov, A. Korznikov, G. Korznikova, M. M. Myshlyaev, S. L. Semiatin
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Chemistry, Physical
T. Konkova, S. Mironov, A. Korznikov, G. Korznikova, M. M. Myshlyaev, S. L. Semiatin
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Materials Science, Multidisciplinary
T. Konkova, S. Mironov, A. Korznikov, G. Korznikova, M. M. Myshlyaev, S. L. Semiatin
MATERIALS CHARACTERIZATION
(2015)
Article
Chemistry, Physical
T. Konkova, I. Valeev, S. Mironov, A. Korznikov, G. Korznikova, M. M. Myshlyaev, S. L. Semiatin
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Chemistry, Physical
Tatyana Konkova, Sergey Mironov, Alexander Korznikov, Galia Korznikova, Mikhail M. Myshlyaev, S. Lee Semiatin
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Materials Science, Multidisciplinary
T. Konkova, S. Rahimi, S. Mironov, T. N. Baker
MATERIALS CHARACTERIZATION
(2018)
Article
Materials Science, Multidisciplinary
Galia Korznikova, Sergey Mironov, Tatyana Konkova, Ainur Aletdinov, Rida Zaripova, Mikhail Myshlyaev, Sheldon Semiatin
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
A. Aletdinov, S. Mironov, G. F. Korznikova, T. Konkova, R. G. Zaripova, M. M. Myshlyaev, S. L. Semiatin
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
S. Rahimi, T. N. Konkova, I. Violatos, T. N. Baker
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Nanoscience & Nanotechnology
Ainur Aletdinov, Sergey Mironov, Galia Korznikova, Tatyana Konkova, Rida Zaripova, Mikhail Myshlyaev, S. Lee Semiatin
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Materials Science, Multidisciplinary
M. Myshlyaev, S. Mironov, G. Korznikova, T. Konkova, E. Korznikova, A. Aletdinov, G. Khalikova
Article
Materials Science, Multidisciplinary
C. Hicks, T. Konkova, P. Blackwell
MATERIALS CHARACTERIZATION
(2020)
Article
Chemistry, Physical
Mikhail Myshlyaev, Sergey Mironov, Galia Korznikova, Tatyana Konkova, Elena Korznikova, Ainur Aletdinov, Gulnara Khalikova, George Raab, Sheldon Lee Semiatin
Summary: The application of Electron backscatter diffraction (EBSD) revealed that microstructural changes in a fine-grain Al-Mg-Li alloy during superplastic behavior were significantly influenced by continuous dynamic recrystallization. This mechanism involved the transverse subdivision of pre-elongated grains transforming into chains of nearly-equiaxed grains. Experimental observations, including significant strain hardening, grain elongation, and the development of crystallographic texture, provided strong evidence of intragranular slip operating during superplastic flow.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
M. Myshlyaev, G. Korznikova, T. Konkova, E. Korznikova, A. Aletdinov, G. Khalikova, G. Raab, S. Mironov
Summary: In this study, the advanced capabilities of electron backscatter diffraction (EBSD) were used to investigate the role of dynamic recrystallization in the superplastic deformation of a fine-grained material. The results showed that dynamic recrystallization occurred only locally and had a minor contribution to microstructural evolution. Therefore, the preservation of the nearly-equiaxed grain morphology associated with superplasticity cannot be attributed to dynamic recrystallization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
A. F. Aletdinov, S. Y. Mironov, G. F. Korznikova, R. G. Zaripova, T. N. Konkova, M. M. Myshlyaev
MATERIALS PHYSICS AND MECHANICS
(2017)
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)
