Article
Nanoscience & Nanotechnology
Chenghao Song, Zhenshan Zhang, Wenyuan Wu, Haoliang Wang, Zhenzhong Sun, Yuhui Yang, Weifeng He, Juping Xu, Yuanguang Xia, Wen Yin, Zhiyan Cheng
Summary: This study investigated the effect of Si on the deformation behavior of martensite in hot-rolled medium Mn steels without any heat treatment. It was found that the addition of Si increased the dislocation density and decreased the crystallite size within martensite. The ultra-high ultimate tensile strength (UTS) and good ductility of the Si-added steel were attributed to the enhanced strain hardening rate caused by Si alloying and dislocation cell formation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
L. Qi, X. D. Huang, A. P. Zhang, H. W. Chen, J. F. Nie
Summary: This study characterized two types of previously unreported dislocation walls in a high-entropy alloy, showing the importance of these structures in strain hardening and plastic accommodation. The walls are constituted by specific types of partial dislocations and play a significant role in dislocation-interface interactions.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Zan Li, Yinan Cui, Wentao Yan, Di Zhang, Yan Fang, Yujie Chen, Qian Yu, Ge Wang, Heng Ouyang, Chen Fan, Qiang Guo, Ding -Bang Xiong, Shenbao Jin, Gang Sha, Nasr Ghoniem, Ze Zhang, Y. Morris Wang
Summary: Additive manufacturing enables self-stabilization of dislocations in metallic materials through heating-cooling cycles, resulting in a unique dislocation assembly that enhances material strength and steady strain hardening.
Article
Engineering, Mechanical
H. Liu, X. K. Shang, B. B. He, Z. Y. Liang
Summary: The strain rate sensitivity of lath martensite and its underlying physics were investigated, revealing that strain rate has minor effect on mechanical properties at low strain rates and that both yield strength and work-hardening rate significantly increase at high strain rates. Microstructural characterization showed that the enhanced yield strength during high-strain-rate deformation is due to larger lattice friction for dislocation slip, and the higher work-hardening rate is attributed to the increased strain gradient resulting in the generation of geometrically-necessary dislocations.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Materials Science, Multidisciplinary
Junfeng Luo, Guojin Xu, Qiaoxia Zhang, Yongjun Li, Jinjiang He
Summary: In this paper, the high-cycle fatigue mechanisms of a pseudoelastic NiTi shape memory alloy under different mean strains were investigated. The results show that the mean strain has an effect on the high-cycle fatigue life of NiTi, which is attributed to the inhomogeneous transformation of martensite and the phenomenon of grain reorientation/rotation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Metallurgy & Metallurgical Engineering
Yushi Takenouchi, Shuhei Wada, Takuro Masumura, Toshihiro Tsuchiyama, Hiroshi Okano, Shusaku Takagi
Summary: Stress relaxation tests were conducted to analyze the effect of mobile dislocations on the low elastic limit of an ultralow carbon martensitic steel. The tests showed that the movement of mobile dislocations significantly reduced the stress. Additionally, 5% cold rolling suppressed relaxation and increased the elastic limit.
ISIJ INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
M. Moshkbar Bakhshayesh, A. Farzadi, R. Kalantarian, A. Zargarzadeh
Summary: By depositing two martensitic stainless steel filler metals with chemically different compositions, the mechanical properties and wear resistance of crane wheels were studied. Microstructural evolution showed different solidification modes in the hardfaced clads due to the discrepancy in the ratio of chromium equivalent to nickel equivalent. A post-weld heat treatment resulted in the formation of fresh martensite in the matrix, significantly increasing the microhardness. The fracture mode in both clads was ductile, and the formation of fresh martensite improved wear resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Jiajing Chen, Yuanfei Han, Zichao Wei, Shaopeng Li, Zhonggang Sun, Liang Zhang, Guangfa Huang, Jianwen Le, Di Zhang, Weijie Lu
Summary: A novel and controllable strategy of simple powder assembly is proposed to fabricate heterostructured metal matrix composites, which breaks the strength-ductility trade-off dilemma and enhances < c+a > dislocation activity.
MATERIALS RESEARCH LETTERS
(2023)
Article
Materials Science, Biomaterials
Dimpee Sarmah, Munmi Borah, Manabendra Mandal, Niranjan Karak
Summary: In recent years, polysaccharide-based hydrogels have gained attention due to their biodegradability, biocompatibility, and non-toxicity. This study presents a simple method for synthesizing a mechanically tough, biocompatible, and biodegradable hydrogel using polysaccharides like starch and agar. The hydrogel showed high mechanical strength and cell viability, and also exhibited good encapsulation efficiency for antibacterial drugs. The hydrogel with loaded drug demonstrated the potential to be used as a promising candidate in wound dressing applications.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Materials Science, Multidisciplinary
Kyung-Shik Kim, Jee-Hyun Kang, Sung-Joon Kim
Summary: The simultaneous alloying of carbon and nitrogen did not decrease hydrogen diffusivity significantly in austenitic steel. During tensile straining, cracks initiated at grain boundaries and propagated along grain boundaries, twin boundaries, or paths where epsilon martensite was concentrated, resulting in mixed intergranular and transgranular fracture modes. However, the resistance to hydrogen embrittlement improved compared to single alloying of either carbon or nitrogen due to enhanced austenite stability.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Atef Hamada, Ali Khosravifard, Sumit Ghosh, Matias Jaskari, Antti Jarvenpaa, Pentti Karjalainen
Summary: In this study, the austenitic Cr-Ni stainless steel was treated with double-reversion annealing (DRA) to develop refined grain microstructures. The DRA structures exhibited superior mechanical properties, formability, and austenite stability under high-speed deformation.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Sangeun Park, Jung Gi Kim, Im Doo Jung, Jae Bok Seol, Hyokyung Sung
Summary: This study aims to reveal the atomic-scale effects of tempering on the complex substructures and stress corrosion cracking resistance of high-strength martensitic steels. The surprising finding is that tempering leads to a decrease in SCC resistance, contrary to the known effect. Analysis of subboundaries in the martensitic microstructure shows that carbon segregation at the lath boundaries during tempering acts as a precursor to harmful cementite, ultimately degrading the SCC resistance of the material.
Article
Chemistry, Physical
Guoshun Qin, Chengguan Zhang, Shaobin Zhang, Xue Chen, Yongjun He
Summary: A bar of single crystal Ni-Mn-Ga shape memory alloy undergoes martensitic phase transformation through nucleation and propagation of Austenite-Martensite (A-M) interfaces. Near the A-M interface, very fine martensite twin laminates are generated due to the compatibility between the two phases. Observations on the specimen's deformation and the twin laminates reveal that the fine laminates after cooling are unstable and spontaneously transform into a single martensite variant, triggered by heating-cooling cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Multidisciplinary Sciences
A. Plotkowski, K. Saleeby, C. M. Fancher, J. Haley, G. Madireddy, K. An, R. Kannan, T. Feldhausen, Y. Lee, D. Yu, C. Leach, J. Vaughan, S. S. Babu
Summary: Residual stresses impact the performance and reliability of manufactured goods and are commonly found in casting, welding, and additive manufacturing. By utilizing operando neutron diffraction, the authors investigate the lattice strain evolution during the printing of a low-temperature transformation steel, providing insights into the mechanisms involved and enabling the design of residual stress states and property distributions in additively manufactured components.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Ning Zhao, Qiangqiang Zhao, Yanlin He, Rendong Liu, Wenyue Liu, Weisen Zheng, Lin Li
Summary: A cost-saving marine steel plate with 1000 MPa yield strength was developed based on nano-particles precipitation in a lath martensitic matrix. The optimized mechanical properties were achieved through conventional heat treatment methods. The high strength was attributed to various strengthening mechanisms such as grain refinement, dislocation strengthening, solid solution strengthening, and precipitation strengthening. The excellent impact toughness was due to the unique microstructure characteristics of fine film-like stable austenite and delamination structure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Naoyuki Nagasako, Akitoshi Suzumura, Ryoji Asahi
Article
Engineering, Mechanical
K. Kowalczyk-Gajewska, E. A. Pieczyska, K. Golasinski, M. Maj, S. Kuramoto, T. Furuta
INTERNATIONAL JOURNAL OF PLASTICITY
(2019)
Article
Materials Science, Multidisciplinary
Shigeru Kuramoto, Tadahiko Furuta
MATERIALS TRANSACTIONS
(2019)
Article
Metallurgy & Metallurgical Engineering
Afshin Yousefi, Goroh Itoh, Zoha Ghorani, Shigeru Kuramoto
ISIJ INTERNATIONAL
(2019)
Article
Materials Science, Multidisciplinary
Mahdieh Safyari, Masoud Moshtaghi, Shigeru Kuramoto
Article
Engineering, Civil
Karol Golasinski, Elzbieta Pieczyska, Michal Maj, Maria Staszczak, Pawel Swiec, Tadahiko Furuta, Shigeru Kuramoto
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2020)
Article
Nanoscience & Nanotechnology
Mahdieh Safyari, Masoud Moshtaghi, Shigeru Kuramoto
Summary: The study investigated the combined effect of solution treatment temperature and severely cold rolling on hydrogen partitioning and related fracture mechanism, revealing different trap sites including coarse Al2Cu particles as a relatively strong trap site for hydrogen. It was found that high hydrogen concentration induced by the environment can lead to decohesion and void formation at Al2Cu coarse particles, promoting premature fracture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Hirofumi Hazama, Daisuke Murai, Naoyuki Nagasako, Masaki Hasegawa, Nobuhiro Ogihara
ADVANCED MATERIALS TECHNOLOGIES
(2020)
Article
Chemistry, Physical
Masoud Moshtaghi, Mahdieh Safyari, Shigeru Kuramoto, Tomohiko Hojo
Summary: The study found that high-angle boundaries (HABs) play an important role in hydrogen embrittlement behavior, with HABs with high desorption energy absorbing a significant amount of hydrogen, reducing the likelihood of reaching the critical hydrogen concentration required for crack initiation, thereby improving the alloy's resistance to hydrogen embrittlement.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Mahdieh Safyari, Masoud Moshtaghi, Shigeru Kuramoto
Summary: The study found that by controlling the distribution of soluble second phase particles, the hydrogen embrittlement resistance of the alloy can be improved, but an excessive increase in second phase particles can make the alloy more sensitive to hydrogen embrittlement.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Mahdieh Safyari, Masoud Moshtaghi, Shigeru Kuramoto, Tomohiko Hojo
Summary: In this study, the hydrogen trap sites and binding energies in an Al-Cu-Mg alloy with different microstructures were investigated to understand the environmental hydrogen embrittlement behavior. The results show that the density and nature of trap sites can determine the susceptibility of the alloy to environmental hydrogen embrittlement.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Materials Science, Multidisciplinary
Kaveh Edalati, Andrea Bachmaier, Victor A. Beloshenko, Yan Beygelzimer, Vladimir D. Blank, Walter J. Botta, Krzysztof Bryla, Jakub Cizek, Sergiy Divinski, Nariman A. Enikeev, Yuri Estrin, Ghader Faraji, Roberto B. Figueiredo, Masayoshi Fuji, Tadahiko Furuta, Thierry Grosdidier, Jeno Gubicza, Anton Hohenwarter, Zenji Horita, Jacques Huot, Yoshifumi Ikoma, Milos Janecek, Megumi Kawasaki, Petr Kral, Shigeru Kuramoto, Terence G. Langdon, Daniel R. Leiva, Valery Levitas, Andrey Mazilkin, Masaki Mito, Hiroyuki Miyamoto, Terukazu Nishizaki, Reinhard Pippan, Vladimir V. Popov, Elena N. Popova, Gencaga Purcek, Oliver Renk, Adam Revesz, Xavier Sauvage, Vaclav Sklenicka, Werner Skrotzki, Boris B. Straumal, Satyam Suwas, Laszlo S. Toth, Nobuhiro Tsuji, Ruslan Z. Valiev, Gerhard Wilde, Michael J. Zehetbauer, Xinkun Zhu
Summary: This article comprehensively reviews recent advances in the development of ultrafine-grained and nanostructured materials through severe plastic deformation and provides a brief history of this field. Severe plastic deformation methods have been effective in producing materials with advanced mechanical and functional properties, and the field of NanoSPD has experienced significant progress in the past two decades.
MATERIALS RESEARCH LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Yuji Mahara, Naoyuki Nagasako, Hideaki Oka, Yasuhito Kondo, Satoru Kosaka, Hiroyuki Nakano, Takamasa Nonaka, Yoshinari Makimura
Summary: In this study, we found that Li1.12Mn0.74O1.60F0.40 positive electrodes with a loose-crystalline rock salt structure show stable and high capacity, with little change in the charge-discharge curve. The introduction of F-Mn bonds in the positive electrode suppresses the local spinel transition in Mn-based positive electrodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Multidisciplinary Sciences
Nobuhiro Ogihara, Masaki Hasegawa, Hitoshi Kumagai, Riho Mikita, Naoyuki Nagasako
Summary: Intercalated metal-organic frameworks (iMOFs) synthesized via spray drying and machine learning design are proposed as fast-charging materials for Li-ion capacitors, demonstrating high capacity retention and electrochemical performance.
NATURE COMMUNICATIONS
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Elzbieta A. Pieczyska, Karol Golasinski, Michal Maj, Maria Staszczak, Zbigniew Kowalewski, Tadahiko Furuta, Shigeru Kuramoto
MATERIALS TODAY-PROCEEDINGS
(2019)
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)
