Article
Nanoscience & Nanotechnology
Pingda Xu, Chongyang Li, Wei Li, Maoyuan Zhu, Ke Zhang
Summary: NbC carbide precipitation can effectively enhance the hydrogen embrittlement resistance and yield strength of high strength steel with the appropriate processing techniques. Retained austenite phases with different morphologies and locations exhibit varying hydrogen trap capabilities, while ferrite phase shows weaker hydrogen trapping ability.
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
Nanoscience & Nanotechnology
Qing Tan, Zhiran Yan, Huijun Wang, David Dye, Stoichko Antonov, Baptiste Gault
Summary: The addition of trace Fe significantly affects the corrosion potential of commercially pure titanium, leading to the appearance of submicron beta phase pockets. Titanium alloys are prone to hydride-associated failures due to the low solubility of hydrogen in α-Ti.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Xingyu Liu, Ying Han, Junhu Wei, Guoqing Zu, Yu Zhao, Weiwei Zhu, Xu Ran
Summary: The effect of tempering temperature on the microstructure and mechanical properties of QPT processed steel was investigated. The findings show that the yield strength decreases gradually with increasing tempering temperature, while the tensile strength initially decreases and then increases. The elongation exhibits an increasing and then decreasing trend. The best mechanical properties are obtained at a tempering temperature of 340 degrees C, with a yield strength of 1495 MPa, tensile strength of 1806 MPa, elongation of 17.7%, and a product of strength and elongation up to 32.92 GPa%.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Simon Vander Vennet, Silvia Leitner, Vsevolod Razumovskiy, Werner Ecker, Tom Depover, Kim Verbeken
Summary: This study investigates the effect of a constant load on hydrogen diffusion through a Q&P steel containing metastable retained austenite. The results show that hydrogen diffusion is delayed under all stressed conditions, even at stresses in the elastic regime, with the delay increasing with the applied load. Thermal desorption spectroscopy reveals the presence of a high temperature peak in the samples tested under load, indicating hydrogen effusion and release due to the transformation of retained austenite.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Jiazhi Zhang, Zongbiao Dai, Liyang Zeng, Xunwei Zuo, Jianfeng Wan, Yonghua Rong, Nailu Chen, Jian Lu, Hao Chen
Summary: Quenching Partitioning Tempering (Q-P-T) is a promising process for treating ultra-high strength steels, achieving a good balance of strength and ductility by stabilizing metastable austenite and strengthening the martensite matrix. Competitive reactions during partitioning/tempering play a substantial role in the microstructures of Q-P-T steels.
Article
Chemistry, Multidisciplinary
Han Zhu, Zechao Zhuang, Jican Hao, Qi Zhao, Ruohan Yu, Jiace Hao, Qi Kang, Shuanglong Lu, Xiaofan Wang, Jinsong Wu, Dingsheng Wang, Mingliang Du
Summary: Controlling atomic adjustment of single-atom catalysts (SACs) allows for direct changes in their local configuration and energy barrier regulation, optimizing reaction pathways. This study demonstrates the synthesis of Ni atoms stabilized on vanadium carbide (NiSA-VC) through a nanofiber-medium thermodynamically driven atomic migration strategy. The results uncover the tunable migration pathway of Ni atom from Ni nanoparticles to neighboring N-doped carbon (NC) and metal carbide, showing promising catalytic activity and selectivity for CO2 electroreduction.
Article
Chemistry, Multidisciplinary
Jican Hao, Han Zhu, Zechao Zhuang, Qi Zhao, Ruohan Yu, Jiace Hao, Qi Kang, Shuanglong Lu, Xiaofan Wang, Jinsong Wu, Dingsheng Wang, Mingliang Du
Summary: This study demonstrates the synthesis of a stable single-atom catalyst (SAC) through atomic manipulation, which allows for optimized reaction pathways. The SAC shows high current density and selectivity for CO production in CO2 electroreduction. The structure and electron transfer of the SAC play crucial roles in the catalytic performance.
Article
Materials Science, Multidisciplinary
Qian Yan, Luchun Yan, Xiaolu Pang, Kewei Gao
Summary: This study investigated the influence of Cu precipitations on hydrogen trapping capability and hydrogen embrittlement (HE) in aged martensitic stainless steel. The results showed a significant decrease in the hydrogen diffusion coefficient and a substantial increase in the hydrogen content in specimens containing Cu precipitations. The specimens with peak-aged (1 h) Cu precipitations exhibited the highest HE susceptibility, as a result of abundant hydrogen trapped by coherent Cu precipitations with the matrix and escaped during the tensile process.
Article
Materials Science, Multidisciplinary
Hye-Jin Kim, Geonjin Shin, Jinheung Park, Myoung-Gyu Lee, Ki-Jung Kim, Seung-Chae Yoon
Summary: This study investigates the fracture behavior of plastically deformed quenching and partitioning (Q&P) steel under hydrogen conditions. The experimental results show that the elongation decreases significantly with an increase in hydrogen traps induced by pre-strains. The effect of prestrain on hydrogen susceptibility is analyzed through fractography and microstructure measurements. The findings provide insights into a new metallurgical design for improving the resistance to hydrogen embrittlement in Q&P steel.
Article
Chemistry, Physical
Hye-Jin Kim, Myoung-Gyu Lee
Summary: The relationship between plastic deformation and hydrogen transport behavior in quenching and partitioning (Q&P) steel was investigated. The evolution of microstructure and hydrogen diffusion and trapping characteristics were characterized using experimental methods. The major findings include the decrease in retained austenite fraction, the increase in geometrically necessary dislocation density, the decrease in hydrogen diffusivity, and the increase in solubility with increasing plastic deformation. The enhanced hydrogen trapping in the Q&P steel with plastic deformation was attributed to the increased dislocation density in ferrite and martensite. Experimental analysis using thermal desorption spectroscopy (TDS), electron backscatter diffraction (EBSD), and scanning transmission electron microscope (STEM) provided supporting evidence for hydrogen trapping characteristics and microstructure correlation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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
Metallurgy & Metallurgical Engineering
Yi Luo, Wei Li, Peng-wei Zhou, Yuan-tao Xu, Hui-yong Pang, Ning Zhong, Hui-sheng Jiao, Xue-jun Jin
Summary: The effect of tempering on carbides and hydrogen embrittlement in E690 high strength marine structural steel was investigated. The study found that with increasing tempering time, the dislocation density decreases and the amount of carbide increases. After tempering for 3 hours, the reduction in dislocation density leads to rapid hydrogen diffusion, but the carbide can trap more hydrogen, resulting in the best hydrogen embrittlement resistance. Under hydrogen charging condition, the fracture mode also changes.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2022)
Review
Materials Science, Multidisciplinary
Michio Shimotomai
Summary: Research shows that ε-carbide in tempered martensite is effective for strengthening steels and promoting resistance to hydrogen embrittlement. By incorporating alloying elements and controlled nucleation of carbides, martensitic steels with high strength, toughness, and resistance to hydrogen embrittlement can be designed.
Article
Chemistry, Physical
Rongjian Shi, Lin Chen, Zidong Wang, Xu-Sheng Yang, Lijie Qiao, Xiaolu Pang
Summary: This study quantitatively investigated the correlation between different microstructural components and high-density hydrogen trapping in tempered niobium carbide (NbC)-precipitated martensitic steel. It was found that martensite lath and a high density of dislocations served as reversible hydrogen trapping sites, while NbC nanoprecipitates, high-angle grain boundaries, and grain-boundary precipitates acted as irreversible hydrogen traps. These findings are significant for enhancing the hydrogen embrittlement resistance of high-strength martensitic steels.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Xiaohui Lu, Dongsheng Qian, Wei Li, Xuejun Jin
Article
Nanoscience & Nanotechnology
Lianbo Luo, Wei Li, Shilong Liu, Li Wang, Xuejun Jin
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Nanoscience & Nanotechnology
Xiao Liang, Fei Xiao, Hong Chen, Zhenxing Li, Xuejun Jin, Takashi Fukuda
SCRIPTA MATERIALIA
(2019)
Article
Nanoscience & Nanotechnology
Yuantao Xu, Wei Li, Xunwei Zuo, Yu Li, Caiyi Zhang, Na Min, Hao Chen, Xuejun Jin
SCRIPTA MATERIALIA
(2019)
Article
Materials Science, Multidisciplinary
Zhenxing Li, Fei Xiao, Xiao Liang, Hong Chen, Zhu Li, Xuejun Jin, Takashi Fukuda
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Julio C. L. Gonzalez, Wei Li, Yu Gong, XueJun Jin
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
Hong Chen, Fei Xiao, Xiao Liang, Zhenxing Li, Zhu Li, Xuejun Jin, Takashi Fukuda
Article
Materials Science, Multidisciplinary
Yuantao Xu, Wei Li, Mingjia Wang, Xiying Zhang, Yun Wu, Na Min, Wenqing Liu, Xuejun Jin
Article
Materials Science, Multidisciplinary
Y. W. Song, Mingjiang Jin, Shungui Zuo, Xuejun Jin
Article
Materials Science, Multidisciplinary
Dengpan Wu, Changying Huang, Ou Zhang, Lianquan Zhao, Wei Li, Xuejun Jin
Article
Materials Science, Multidisciplinary
Yuanwei Song, Mingjiang Jin, Xiaocang Han, Xiaodong Wang, Peng Chen, Xuejun Jin
Summary: The study introduces a Ni50.8Ti49.2 alloy with ultrahigh damping capacity achieved through a combination of severe deformation, insufficient annealing, and low-temperature aging. The high broad internal friction plateau in this alloy is attributed to the presence of nanodomains, stable coexistence of B19'-phase and R-phase, abundant phase boundaries, and movable interfaces. The critical role of low-temperature aging in inducing nanodomains and the generation of high-density nanodomains through insufficient annealing and low-temperature aging processes are confirmed.
Article
Nanoscience & Nanotechnology
L. L. Wei, G. H. Gao, J. Kim, R. D. K. Misra, C. G. Yang, X. J. Jin
Summary: This article investigates the mechanical behavior of Fe-27Mn-9Al-1C austenitic steel microalloyed with Nb, specifically focusing on its work hardening behavior and plasticity mechanisms. The study reveals that pronounced planar dislocation slip occurs during plastic deformation, and the shearing of precipitates and refinement of slip bands contribute to strain hardening of the steel. Annealing twin boundaries act as dislocation sources, promoting further subdivision of slip bands and suppressing strain localization.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Ruihang Hou, Fei Xiao, Zhu Li, Xuejun Jin
Summary: The study investigates the effects of crystallographic texture on the superelasticity and elastocaloric effect of nanograin Ti-44Ni-5Cu-1Al rolled sheet. As the angle between tensile direction and rolling direction increases, the intergranular constraint effect reaches its maximum in the transverse direction, resulting in similar monotonic decreasing trends for transformation strain and adiabatic temperature change. In the rolling direction, the material coefficient of performance reaches 11.2.
SCRIPTA MATERIALIA
(2022)
Article
Microscopy
Qi Lu, Jiayi Wu, Shilong Liu, Shiqi Zhang, Xiaorong Cai, Wei Li, Jun Jiang, Xuejun Jin
Summary: A multi-modal deep learning approach is proposed to predict the geometrically necessary dislocation (GND) density in materials. The method utilizes electron backscatter patterns (EBSPs) and dislocation configurations to achieve accurate predictions. The study also introduces a specific data augmentation strategy for the GND prediction task. High accuracy is achieved on aluminum samples, and the networks are robust and capable of real-time analysis.
Article
Materials Science, Multidisciplinary
Peng Chen, Xiaorong Cai, Na Min, Yunfan Liu, Zhengxiong Wang, Mingjiang Jin, Xuejun Jin
Summary: The fatigue resistance of superelastic NiTi shape memory alloy wires was improved by combining mechanical training and nanocrystallization. Stress-controlled training effectively improved the functional stability and structural fatigue life of nanocrystalline NiTi wires. The training-induced lattice rotation and preferential grain orientation decreased local stress concentration and improved the structural fatigue life.
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)
