Article
Materials Science, Multidisciplinary
Zhiquan Huang, Chuanlu Qi, Yanchun Zhu, Guowei Yang, Hongyu Lai, Jinchao Zou
Summary: The microtexture evolution of AZ31 magnesium alloy plate edge samples was studied using EBSD, revealing that the generation of extension twins is influenced by varying deformation conditions. At room temperature, the edge samples exhibited significantly greater texture strength than the middle part, with the consumption of hard-oriented grains and weakening effect of the basal texture being proportional to the volume fraction of extension twins.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Gukin Han, Yeonju Noh, Umer Masood Chaudry, Sung Hyuk Park, Kotiba Hamad, Tea-Sung Jun
Summary: The study found that Mg-0.5Ca alloy exhibits temperature-insensitive hardening behavior, while pronounced twinning activity was observed in pure Mg when deformed at low temperatures. The microstructure of Mg-0.5Ca helps reduce twinning behavior, resulting in its hardening behavior being temperature-dependent.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
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
Chemistry, Physical
Pengfei Yang, Zhiyuan Yang, Lin Li, Qi Sun, Li Tan, Xinkai Ma, Minhao Zhu
Summary: When the external tension loading is parallel to the normal direction of the magnesium alloy plate, multiple {10(1) over bar2} twin variants can be activated. In addition to abundant primary {10(1) over bar2} twins, an atypical double twinning sequence can occur during uniaxial loading, with secondary twins forming at regions where two primary twins of different variant pairs interact. The formation of these secondary twins may be closely related to the minimization of local strain incompatibility at the twinning boundary caused by basal dislocations within the primary twins.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Lichao Li, Chunjoong Kim, Young-Min Kim
Summary: Four types of slip systems and two types of twinning were identified in magnesium alloys using SEM and EBSD. The Schmid factors of these slip systems were calculated based on the Euler angle obtained from EBSD. The identification of slip systems and calculation of Schmid factors are crucial for understanding the deformation mechanism of the material.
Article
Materials Science, Multidisciplinary
Chuanlong Xu, Lin Yuan, Haidong Fan
Summary: Molecular dynamics simulation was used to study the interaction between precipitate and {10 (1) over bar2} twin in Mg-Al alloy. The results showed that the introduction of precipitate had little effect on the formation of homogeneous and heterogeneous twins. During twin propagation, the blocking effect of precipitate depended on its size. When the length of precipitate was much larger than the thickness of twin, the twin tip was completely blocked with elastic bending occurring at the junction. During twin growth, the precipitate acted as an obstacle and a source for twinning dislocations gliding along the twin boundary. The influences of width and thickness on precipitation hardening were significantly greater than that of length.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
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
Chemistry, Physical
Le Zhou, Ruihua Yan, Zhenyu He, Zhi Wang, Feng Wang, Ziqi Wei, Pingli Mao, Zheng Liu
Summary: This paper investigates the twinning nucleation and microstructure evolution of AZ31 magnesium alloy during quasi-in situ dynamic compression. The microstructure is characterized before and after deformation using electron backscatter diffraction and transmission electron microscopy. The strain accommodation is estimated using twinning variants and the geometric compatibility factor (m'). The nucleation behavior of 55.4% extension twinning follows Schmid's law under high strain rate compression. Non-Schmidt twinning variants with the highest geometric compatibility factor (m') in the active twinning system of adjacent grains are activated in paired twins, which affects twinning nucleation and variant selections.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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
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
Xiaoqian Guo, Chao Ma, Lingyu Zhao, Adrien Chapuis, Qing Liu, Peidong Wu
Summary: Wrought magnesium and Mg alloys exhibit strong basal texture and various slip and twin modes at room temperature, which interact with each other and are modeled empirically via latent hardening coupling coefficients. The activation of {1012} tension twinning can lead to severe mechanical anisotropy and texture change, influenced by slip-induced dislocations. Experiments and simulations show that latent hardening by slip modes for {1012} twinning is much less than self-hardening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yuji Sato, Thomas Swinburne, Shigenobu Ogata, David Rodney
Summary: The research demonstrates that anharmonic vibrational effects can impact the kinetics of thermally activated processes, leading to an unexpected decrease in the nucleation rate even at low temperatures.
MATERIALS RESEARCH LETTERS
(2021)
Article
Chemistry, Physical
Ning Lv, Lingyu Zhao, Hong Yan, Boyu Liu, Yaozong Mao, Zhiwei Shan, Rongshi Chen
Summary: The texture tailoring, twinning, and dynamic recrystallization behaviors of a Mg-17Gd (wt%) alloy were investigated through compressing the alloy with a <0001> fiber texture along different directions at room temperature. The results showed that twinning was activated in {10-12} and {11-21} planes. The activation of {10-12} twinning could be explained by Schmid law, while the activation of {11-21} twinning was better explained by the basal slip transfer condition. Grain refinement occurred in specimens with large strain, resulting in a decrease in average grain size from -27 μm to -12 μm. The mechanism of grain refinement involved the restriction of twin boundaries' mobility, formation of random high angle grain boundaries (HAGBs), and the formation of new grains through dislocation-twin interaction and SF difference within the parent grain.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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
Nanoscience & Nanotechnology
Chaitanya Paramatmuni, Anand K. Kanjarla, Xun Zeng, Dikai Guan
Summary: The inclination angle (IA), which is the angle between the c-axis of a twin and the global loading direction, satisfactorily captures the trends observed in the area fractions of both Schmid and non-Schmid twins. Detailed analyses also reveal that non-Schmid twins preferentially form in smaller grains compared to Schmid twins.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Kyungmin Noh, Seyed Amir Arsalan Shams, Wooyeol Kim, Jae Nam Kim, Chong Soo Lee
Summary: The study aimed to analyze the effects of microstructure on the resistance of low-carbon steels to low-cycle fatigue and extremely low-cycle fatigue (ELCF). Different microstructures showed different fatigue resistance properties, with ferrite-pearlite performing best in ELCF resistance and ferrite-bainite-martensite exhibiting higher ELCF resistance when considering tensile strength.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Geonhyeong Kim, Seyed Amir Arsalan Shams, Jae Nam Kim, Jong Woo Won, Seong Woo Choi, Jae Keun Hong, Chong Soo Lee
Summary: The low-cycle fatigue behavior of a cryogenic-rolled commercially pure titanium alloy was investigated, showing that increasing the volume fraction of deformation twins through pre-deformation significantly improved the low-cycle fatigue resistance. The formation of smaller dislocation cells in the pre-deformed microstructure led to more severe crack arrest.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Gyeong Hyeon Jang, Kitae Kwon, Wooyeol Kim, Sangho Uhm, Taekyung Lee, Chong Soo Lee
Summary: The study found that Type-B liquid metal embrittlement (LME) cracks did not affect the high-cycle fatigue resistance of spot-welded TRIP steel plates, with the crack initiation site remaining unchanged at the sample notch.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2021)
Article
Chemistry, Physical
Hyun Joo Seo, Jae Nam Kim, Jang Woong Jo, Chong Soo Lee
Summary: This paper quantified the effect of tempering duration on the hydrogen embrittlement resistance of vanadium-added tempered martensitic steel. The study showed that characteristics of V-carbide greatly affect the HE resistance, with the greatest resistance observed at the peak aging condition of 4 hours.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Kitae Kwon, Gyeonghyeon Fang, Wooyeol Kim, Sangho Uhm, Taekyung Lee, Chong Soo Lee
Summary: Type-C liquid metal embrittlement (LME) cracks affect the high-cycle fatigue resistance of TRIP steel joined using resistance spot welding (RSW), with varying impacts on tensile behavior in different deformation modes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
Gyeonghyeon Jang, Jae Nam Kim, Hakhyeon Lee, Taekyung Lee, Nariman Enikeev, Marina Abramova, Ruslan Z. Valiev, Hyoung Seop Kim, Chong Soo Lee
Summary: This study investigated the microstructural evolution and mechanical properties of Fe-Mn-Al-C steel with varying shear strain imposed by high-pressure torsion (HPT). Different initial grain sized steels were used, and it was found that an inverse Hall-Petch relation softening phenomenon occurred in the finest grained steel with the highest number of revolutions (10R) of HPT.TEM observation showed the absence of deformation twins and the formation of numerous tilt/twist nanocrystalline boundaries which may explain the softening behavior in this regime.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Correction
Multidisciplinary Sciences
Nhung Thi-Cam Nguyen, Peyman Asghari-Rad, Praveen Sathiyamoorthi, Alireza Zargaran, Chong Soo Lee, Hyoung Seop Kim
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Seyed Amir Arsalan Shams, Jae Wung Bae, Jae Nam Kim, Hyoung Seop Kim, Taekyung Lee, Chong Soo Lee
Summary: This study investigated the deformation behaviors and microstructural evolutions of an interstitial metastable high-entropy alloy under monotonic and cyclic deformation modes. The presence of carbon and the appearance of deformation-induced epsilon-martensite were found to contribute to the superior combination of strength and ductility in the alloy. The microstructure of the alloy varied between coarse-grained and fine-grained depending on the deformation mode. The strain amplitude also influenced the fatigue life of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Man Jae Sagong, Eun Seong Kim, Jeong Min Park, Gangaraju Manogna Karthik, Byeong-Joo Lee, Jung-Wook Cho, Chong Soo Lee, Takayoshi Nakano, Hyoung Seop Kim
Summary: Recently, direct energy deposition (DED) has gained attention in metal additive manufacturing for its ability to produce multi-materials and composition gradient materials with geometrical design freedom and high productivity. This study used DED processing to fabricate layered multi-materials of austenitic stainless steel (SS316L) and nickel-based superalloy (IN718). The resulting multi-materials exhibited a 500 μm thick composition gradient material zone (CGZ) at the SS316L/IN718 interface due to dilution. Fine cracks containing brittle phases were observed in the CGZ closer to the SS316L side. Despite the cracks, the multi-material samples showed higher yield strength and ultimate tensile strength than those predicted by rule-of-mixtures, attributed to hetero-deformation-induced hardening near the CGZ.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Seyed Amir Arsalan Shams, Gyeonghyeon Jang, Jae Wung Bae, Auezhan Amanov, Hyoung Seop Kim, Taekyung Lee, Chong Soo Lee
Summary: The low-cycle fatigue life and cyclic deformation behavior of a metastable high-entropy alloy were investigated. The effects of ultrasonic nanocrystal surface modification (UNSM) process on tensile properties and fatigue life were evaluated. The study found that the fatigue life of the alloy was comparable to that of CoCrFeMnNi alloy, and mechanical twins in cyclic loads appeared only at high strain amplitudes. Additionally, while the UNSM process increased the yield strength of the alloy, it also accelerated fatigue crack initiation and degraded fatigue crack growth resistance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Jang Woong Jo, Jae Nam Kim, Chong Soo Lee
Summary: This paper presents a method to increase the hydrogen-embrittlement resistance of martensite steel using partial phase transformation and tempering. The resulting dual-tempered martensitic (DTM) steel showed higher HE resistance and strength compared to conventional tempered martensite (TM) due to the presence of specific precipitates.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Geonhyeong Kim, Taekyung Lee, Seyed Amir Arsalan Shams, Jae Nam Kim, Seong Woo Choi, Jae Keun Hong, Chong Soo Lee
Summary: This study developed a heterogeneous-structured (HS) Ti-6Al-4V alloy composed of coarse and fine grains to enhance mechanical properties. The HS alloy had higher strength and better resistance to low-cycle fatigue compared to a commercial mill-annealed coarse-grained (CG) alloy, while also maintaining ductility. It offered an engineering advantage of low-cost mass production compared to an ultrafine-grained (UFG) counterpart. The enhanced mechanical properties of the HS alloy were attributed to the presence of an ultrafine-grained region and partial transformation of texture.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Seyed Amir Arsalan Shams, Geonhyeong Kim, Chong Soo Lee, Hyoung Seop Kim, Hamid Reza Jafarian
Summary: The effect of Si content on the tensile and cyclic deformation behavior of Fe50-xMn30Co10Cr10Six (x = 0-6) as a metastable high-entropy alloy was studied. The tensile properties and deformation mechanisms were not significantly affected by Si content up to 4 at.%, but the cyclic deformation behavior was sensitive to Si content. The addition of Si facilitated the γ to ε-martensite phase transformation and resulted in fatigue lives of more than 10000 cycles at a strain amplitude of 0.7%.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Crystallography
Hamed Shahmir, Parham Saeedpour, Mohammad Sajad Mehranpour, Seyed Amir Arsalan Shams, Chong Soo Lee
Summary: One important issue in materials science is the balance between strength and ductility in engineering alloys, and creating heterogeneous and complex microstructures is an effective method to achieve this. In this study, a CoCrFeNiMn high-entropy alloy was processed through cold rolling and post-deformation annealing at temperatures ranging from 650-750 degrees C, resulting in a wide range of grain sizes. Annealing at 650 degrees C produced a heterogeneous structure with recrystallized areas of ultrafine and fine grains and non-recrystallized areas with an average size of around 75 μm. The processed material exhibited a combination of high strength (over 1 GPa) and uniform elongation (over 12%), which was attributed to different deformation mechanisms such as dislocation slip, deformation twinning, and hetero-deformation-induced hardening. Increasing the annealing temperature to 700 degrees C allowed for the acquisition of bimodal grain size distributions (around 1.5 and 6 μm), while annealing at higher temperatures eliminated the heterogeneous structure and led to a significant decrease in strength.
Article
Materials Science, Multidisciplinary
Minseob Kim, Seong Ho Lee, Jinyeong Yu, Seho Cheon, Sujeong Byun, Chong Soo Lee, Taekyung Lee
Summary: This study investigated the microstructural kinetics induced by electropulsing treatment (EPT) of Ti-6Al-4V alloy and found that EPT enhances several aspects of microstructural evolution, leading to improved mechanical performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(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)
