Article
Materials Science, Multidisciplinary
Y. Jiang, X. Zhou, X. Y. Li, K. Lu
Summary: Grain boundary relaxation can stabilize nanograined structures in many FCC metals and alloys, but this mechanism is interfered by deformation-induced martensitic transformation in 304 stainless steels. In this study, gradient FCC nanograined structures were prepared in a 304 stainless steel and triggered GB relaxation was observed in samples with grain sizes below 60 nm. Thermal stability increased with decreasing grain size, contrary to the conventional trend. Martensitic nanograins of the same composition did not exhibit GB relaxation, as their instability temperature was controlled by reverse martensitic transformation.
Article
Chemistry, Multidisciplinary
Sheng Qian, Yifeng Ni, Yi Gong, Fan Yang, Qi Tong
Summary: This study finds that using a gradient nanograined structure can enhance the damping capacity of metals. The GB orientations in the gradient grains can facilitate GB sliding, thus increasing the damping capacity. This structure can also maintain the level of material strength and achieve a synergy of strength, ductility, and damping.
Article
Materials Science, Multidisciplinary
Pavel Dolzhenko, Marina Tikhonova, Marina Odnobokova, Rustam Kaibyshev, Andrey Belyakov
Summary: The study investigates the change in the grain boundary network during recrystallization and grain growth in a 316L austenitic stainless steel, noting an increase in interruptions per grain with increasing grain size.
Article
Materials Science, Multidisciplinary
S. Aamani, C. R. Das, Surendra K. Martha, Bharat B. Panigrahi
Summary: The influence of nitrogen content and percentage of prior rolling deformation on the evolution of grain boundary character distribution in 316L(N) stainless steel during grain boundary engineering type thermomechanical processing has been studied. Suitable thermomechanical processing can improve corrosion resistance in stainless steel by producing low energy sigma 3 boundaries and low energy grain boundary network.
Article
Nanoscience & Nanotechnology
X. Z. Li, C. Li, L. Lu, J. Y. Huang, S. N. Luo
Summary: Interactions between slip bands and interfaces in a compressed duplex stainless steel were investigated in this study. It was found that grain boundaries and phase boundaries play important roles in plastic deformation, with twin GBs/PBs showing higher probability of slip transmission and lower probability of slip blockage compared to general GBs/PBs. Loading orientation has a minor effect on SB-GB interactions, but a pronounced effect on SB-PB interactions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Rui Ke, Chengyang Hu, Ming Zhong, Xiangliang Wan, Kaiming Wu
Summary: This study investigates the mechanical behaviors of ultra-fine grain (UFG) austenitic stainless steel compared to coarse grain (CG) counterpart. It is found that UFG exhibits higher nanohardness in both grain interior and grain boundary due to grain refinement effects. In the grain interior, the higher matrix strength of UFG is attributed to the lower density of pre-existing dislocations, requiring higher stress for nucleation and plastic deformation. On the grain boundary, the higher average P-c value indicates a higher shear stress required for dislocation activation, revealing a stronger grain boundary effect attributed to surrounding strains. The activation volume obtained from nanoindentation shows weak dependence on grain orientation but strong dependence on grain size.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Majid Laleh, Anthony E. Hughes, Mike Y. Tan, Gregory S. Rohrer, Sophie Primig, Nima Haghdadi
Summary: The study revealed that an austenitic stainless steel produced by additive manufacturing has relatively fine grains and a high population of Sigma 3 boundaries. The microstructure is mostly dominated by highly incoherent Sigma 3 boundaries, with other types of boundaries present in the grain boundary network. These findings demonstrate the potential to engineer the grain boundary network of materials via additive manufacturing.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
B. Wang, W. Xu, X. Zhou, X. Y. Li, J. S. Qiao
Summary: Equiaxial-nanograined pure aluminum with an average grain size of 65 nm was successfully fabricated through the combined plastic deformation process of cold rolling and cryogenic high pressure torsion. The aluminum exhibited high strength and superior thermal stability, mainly due to the presence of high angle grain boundaries and grain boundary relaxation.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Nima Haghdadi, Hansheng Chen, Zibin Chen, Sudarsanam S. Babu, Xiaozhou Liao, Simon P. Ringer, Sophie Primig
Summary: Fluctuations in energy distribution during additive manufacturing can result in thermal transients, particularly in alloys. In this study, the complexities in a duplex stainless steel during laser powder bed fusion were investigated. The formation of Ni-Mn-Si rich phase at grain boundaries and local fluctuation in Cr and Fe concentrations were observed, providing precursors for Cr2N formation. These phases were attributed to severe thermal gyrations and thermal stresses associated with laser powder bed fusion.
SCRIPTA MATERIALIA
(2022)
Article
Physics, Applied
Brian Fuchs, Jianmin Qu, Jin-Yeon Kim, Kinga A. Unocic, Qianying Guo, Pradeep Ramuhalli, Laurence J. Jacobs
Summary: This paper investigates the precipitation of chromium carbides in austenitic stainless steels at high temperatures, leading to intergranular chromium depletion along grain boundaries. A reduced-order model of acoustic nonlinearity is proposed to explain the phenomenon, with a direct relationship observed between the radius of M23C6 grain boundary carbides and the non-linear ultrasound parameter beta. The model was validated through experimental observations and measurements, providing insights into the behavior of these alloys during isothermal aging.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Engineering, Biomedical
C. Y. Hu, X. L. Wan, Y. J. Zhang, X. T. Deng, Z. D. Wang, R. D. K. Misra
Summary: The study found that the hardness and modulus of a medical austenitic stainless steel are higher near {101} orientation, while the pop-in plastic deformation is influenced by grain boundaries. The activation volume and plastic zone radius show a weak dependence on grain orientation, with the ratio of c/d following a Gaussian peak function distribution.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Shunyu Yao, Hengbin Zhang, Fengcang Ma, Ping Liu, Lin Song, Wei Li, Ke Zhang, Xiaohong Chen
Summary: Grain boundary engineering (GBE) is a method to optimize the grain boundary characteristics of metals and improve their resistance to intergranular corrosion (IGC). This study quantitatively investigated the effect of various GBE processing on the fraction of low SCSL grain boundaries and random large-angle grain boundary connectivity in 304 stainless steel. The corrosion behaviors of samples with different grain boundary characteristics were studied in terms of the fractal dimension, and a correlation between the fractal dimension and the corrosion resistance was established.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zhenhua Wang, Bing Zhang
Summary: The study investigated the cavitation erosion behavior and mechanisms of high-nitrogen austenitic stainless steel, revealing the significant influence of grain-boundary characteristics on cavitation erosion resistance. A large difference in Taylor factor between grains or twins was found to increase the risk of cavitation-induced cracking.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Physical
Wanmin Guo, Qingshun Bai, Yuhao Dou, Tingting Wang, Hongfei Wang
Summary: The surface morphology and frictional behavior of graphene can be greatly affected by the underlying substrate material, especially in the field of nanofriction. This study found that the grain boundaries in polycrystalline substrates like stainless steel cause bulging in graphene, which in turn affects its nanofriction behavior. The phenomenon of graphene bulging leads to an increase in frictional force, even though graphene exhibits low friction when tightly adsorbed on stainless steel grains. Additionally, the contact between the tip and the bulging graphene results in a two-stage frictional rise, with different rates and mechanisms of frictional rise for each stage.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Hossein Beladi, Ehsan Farabi, Peter D. Hodgson, Matthew R. Barnett, Gregory S. Rohrer, Daniel Fabijanic
Summary: Solid-state additive friction stir deposition was used for three-dimensional printing of 316L stainless steel. The resulting microstructure was exceptionally fine, with a significantly different misorientation angle distribution from the original material, and a texture showing strong shear components.
PHILOSOPHICAL MAGAZINE
(2022)
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.