Evolution of bond structure and surface morphology of nitrogenated diamond-like carbon coatings during annealing by Jihua Peng, Da Peng, Guoge Zhang, Jiacheng Liao

“…The morphologies, microstructures, and the bonding structure of the specimens were characterized using scanning electron microscopy, X-ray photoelectron spectroscopy, and micro-Raman spectroscopy. …”
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A diffusion MRI model for random walks confined on cylindrical surfaces: towards non-invasive quantification of myelin sheath radius by Erick J. Canales-Rodríguez, Erick J. Canales-Rodríguez, Erick J. Canales-Rodríguez, Chantal M. W. Tax, Chantal M. W. Tax, Elda Fischi-Gomez, Elda Fischi-Gomez, Elda Fischi-Gomez, Derek K. Jones, Jean-Philippe Thiran, Jean-Philippe Thiran, Jean-Philippe Thiran, Jonathan Rafael-Patiño, Jonathan Rafael-Patiño

“…Despite advancements in diffusion MRI (dMRI) microstructure techniques, there are currently no models specifically designed to estimate myelin sheath radii.MethodsThis proof-of-concept theoretical study presents two novel dMRI models that characterize the signal from water diffusion confined to cylindrical surfaces, approximating myelin water diffusion. …”
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Fast heating annealing of V-microalloyed TWIP steel: Pathway to ultrafine grains and enhanced mechanical performance by Atef Hamada, Ali Khosravifard, Tuomas Alatarvas, Matias Jaskari, Walaa Abd-Elaziem, Tarek Allam, Antti Järvenpää

“…Cold-rolled sheets were subjected to FA cycles at a heating rate of 200 °C/s over a temperature range of 700–900 °C for 30 s. The microstructures achieved through FHA were characterized using electron backscatter diffraction (EBSD), while mechanical performance was evaluated through uniaxial tensile testing and physically based modeling.FHA at lower temperatures (700–800 °C) promoted partially recrystallized structures, while fully recrystallized ultrafine-grained microstructures were obtained at 850–900 °C. …”
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Electromagnetic shocking treatment induced grain bridging improved the impact toughness of 6082 aluminum alloys by Qian Sun, Qi Xiang, Guojing Ren, Lin Hua, Yi Yang

“…The fracture morphology and microstructure are characterized and analyzed. The results show that, compared with HCSA samples (as-received material + solid solution treatment + unidirectional hot compression + peak aging treatment), HEST samples (HCSA samples with best mechanical properties + EST) exhibit a prominent impact energy (increased by ∼ 28 %) with slightly increased tensile strength, slightly decreased yield strength and ductility. …”
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Study of thermal resistance and regulation mechanisms in nickel slag-slag based binary geopolymers by Jize Wang, Sixiang Kang, Dongliang Zhang, Wenda Wu, Feng Zhang, Xuefang Wang, Liwei Xu, Jipeng Zhang

“…Mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM) were used to characterize the pore structure and microstructure after exposure to various high temperatures. …”
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Test setup for analyzing the electrical resistance during fatigue loading for metastable austenite AISI 304L and its diffusion-brazed joints by Lukas M. Sauer, Johannes L. Otto, Jonas A. Ziman, Peter Starke, Frank Walther

“…Accordingly, in-situ electrical resistance measurements were employed in this study to characterize the microstructural changes during fatigue with cyclic creeping. …”
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Thermal Shock and High Temperature Wear Behaviors of SHM1302 Hard-Faced Layer by FEI Yanmin, WU Rufei, LI Qi, GAO Anyang, SI Tingzhi

“…To evaluate the high temperature application range of SHM1302 hard surface layer， the thermal shock resistance and high temperature wear resistance of SHM1302 hard surface layer were tested respectively， and the thermal shock and high temperature wear behavior of hard surface layer were investigated by X-ray diffraction (XRD)， scanning electron microscopy (SEM)， energy dispersive X-ray spectroscopy(EDX) and other characterization methods.In addition， the relationship between high-temperature oxidation / microstructure transformation and thermal shock / high-temperature wear behavior was established.Results showed that the initiation and propagation of SHM1302 thermal shock cracks were affected by the combined effects of stress and oxidation， and the cracks mainly propagated along the interface between matrix and carbide.With the thermal shock cycle，the formation of harmful phase of MnFe2O4 in the oxide film and the precipitation of (Fe，Cr)3C in the matrix promoted the expansion of thermal shock cracks.At 500 ℃， the hard surface had good high temperature wear performance.The wear at 600 ℃and 700 ℃was significantly increased by 1 244%and 1 596%compared with 500 ℃.When the wear temperature increased from 500 ℃to 600 ℃， the increase of oxidation rate and the formation of harmful phase MnFe2O4 were the key factors for the rapid decline of wear performance.Furthermore， the M ⇌A structure transformation at 700 ℃promoted the initiation of fatigue cracks and further accelerated the wear process.…”
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Enhanced vacuum brazing joining between Ti–48Al–2Cr–2Nb/Ti–22Al–25Nb intermetallic alloys by Zr-free Ti-based filler by Hao Tian, Jie Xiong, Lei Zhao, Jun Mei, Yan Qi, Jun-Wei Wu, Kai-Kai Li, Jian-Chao He, Tong-Yi Zhang

“…Detailed microstructural characterization of the brazed joints was conducted using Electron Backscatter Diffraction and Transmission Electron Microscopy, identifying various phases and their distributions. …”
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Study on the mechanism of improvement of mechanical properties of Al–Mg–Si aluminum alloys by Cu and Ce by Mulan Peng, Cheng Li, He Wei, Qitao Lv, Zulai Li, Fei Zhang

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Microstructures and corrosion behaviors under sodium chloride aqueous conditions of Co-free non-equiatomic Al0.32CrFeTi0.73(Ni1.50-xMox) (x=0, 0.23) high entropy alloys by Xiaoyong Shu, Hao Wang, Jianping Zhao

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An Investigation of the Effects of Cutting Edge Geometry and Cooling/Lubrication on Surface Integrity in Machining of Ti-6Al-4V Alloy by J. Caudill, R. Sarvesha, G. Chen, I. S. Jawahir

“…Utilization of advanced cooling strategies to control cutting interface thermal gradients thus provides a processing route to generate tailored microstructures and surface integrity during the machining of this alloy.…”
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Rotary friction welding applied to Cu11.8Al0.45Be shape memory alloy by A.A.de Albuquerque, H. Louche, D.F.de Oliveira, I.C.A. Brito

“…The welding zones are well-defined, narrow, and have a very refined microstructure compared to the base metal. The phase transition temperatures along the welded assemblies were not changed when welding was performed on the quenched samples, except in the welding zone of the sample welded with 10 MPa. …”
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High-cycle fatigue behavior of high-speed blanked 5754 aluminum sheets by Lisa Winter, Sven Winter, Verena Psyk, Rico Drehmann, Thomas Lampke

“…Depending on the material and process parameters, the microstructure is significantly affected due to the induced deformation. …”
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Synergistic enhancement of recycled aggregate concrete using hybrid natural-synthetic fiber reinforcement and silica fume by Danish Akbar, Faisal Shabbir, Ali Raza, Nabil Ben Kahla

“…Mechanical performance was evaluated through compressive, flexural, and splitting tensile strength tests, while durability was assessed via water absorption, mercury intrusion porosimetry (MIP), and acid resistance testing. Microstructural and mineralogical characterizations were performed using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). …”
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On the Peculiarities of Wire-Feed Electron Beam Additive Manufacturing (WEBAM) of Nickel Alloy–Copper Bimetal Nozzle Samples by Kseniya Osipovich, Vyacheslav Semenchuk, Andrey Chumaevskii, Denis Gurianov, Alexander M. Korsunsky, Valery Rubtsov, Evgeny Kolubaev

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Superior biomechanical stability of pedicle screws compared to lateral mass screws: recommendations for bicortical positioning and enhancing bone contact in geriatric C1 vertebrae by Leon-Gordian Leonhardt, Leonie Rörup, Anna Lena Kammal, Michael Hahn, Marc Dreimann, Benjamin Ondruschka, Felix Nikolai von Brackel, Tim Rolvien, Lennart Viezens, Simon von Kroge

“…Methods Human C1 from geriatric body donors (n = 28; 50% female, age 80.8 ± 13.9 years) were collected and characterized based on their bone microstructure. Additionally, the mechanical stability of LMS and PS fixation in mono- and bicortical positioning was tested by mechanical loading. …”
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Synthesis of nanostructured Fe–TiB2 composites with excellent mechanical properties via laser powder bed fusion by Yujiao Ke, Bin Fu, Ze Qiao, Haoran Liu, Jinxu Cao, Qipeng Liu, Wei Chen, Shuyang Qin, Jianglong Gu, Zhefeng Xu, Hu Tang

“…The optimized process yields a bulk sample with a remarkably refined microstructure characterized by in situ nano TiB2 nanoparticles (20–150 nm) uniformly dispersed within a nearly equiaxed, texture–free α–Fe matrix with grain sizes less than 500 nm—an order of magnitude smaller than the matrix grains typically achieved in other additively manufactured particle–reinforced metal matrix composites. …”
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Contrasting effects of Si on high-temperature deformation behavior and room-temperature strength in V-microalloyed 10Mn-18Cr stainless steels by Atef Hamada, Ali Khosravifard, Khaled Elanany, Mahmoud Khedr, Anna Kisko, Matias Jaskari, Saad Ebied, Tarek Allam, Antti Järvenpää, Pentti Karjalainen

“…The RT tensile properties were evaluated through uniaxial tensile tests of fast-heating (FH) annealed cold-rolled sheets at temperatures ranging from 800 to 1200 °C for 3 min. Microstructural analysis of the hot-rolled and FH annealed structures was conducted using electron backscatter diffraction and laser scanning confocal microscopy, and precipitation was characterized by transmission electron microscopy. …”
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Investigation on Tensile Behavior of Solid Solution-Strengthened Ni-Co-Cr-Based Superalloy During Long-Term Aging by Wanqi Hou, Xianjun Guan, Jiaqi Wang, Jinrong Wu, Lanzhang Zhou, Zheng Jia

“…This study investigated how long-term aging (750 °C and 950 °C) affects the microstructure and room-temperature tensile properties of the Ni-Co-Cr superalloy GH3617. …”
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Li+ concentration and morphological changes at the anode and cathode interphases inside solid-state lithium metal batteries by Chun Huang, Matthew D Wilson, Ben Cline, Abeiram Sivarajah, Wiebe Stolp, Matthieu N Boone, Thomas Connolley, Chu Lun Alex Leung

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