Gotowe bibliografie tematyczne / It was found that the microstructure

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Gotowa bibliografia na temat „It was found that the microstructure”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "It was found that the microstructure"

Zeng, Qiu Lian, Zhong Guang Wang, and J. K. Shang. "Microstructural Effects on Low Cycle Fatigue of Sn-3.8Ag-0.7Cu Pb-Free Solder." Key Engineering Materials 345-346 (August 2007): 239–42. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.239.

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Low cycle fatigue behavior of Sn-3.8Ag-0.7Cu solder was investigated under fully reversed cyclic loading, with particular emphasis on microstructural effects. The LCF behavior of the solder with equiaxed microstructure was found to differ greatly from that of the solder with a dendrite microstructure. At a given total strain amplitude, the dendrite microstructure exhibited a much longer fatigue life than the equiaxed microstructure. Such a strong microstructural effect on fatigue life arose from the difference in cyclic deformation and fracture mechanisms between the two microstructures. A lar

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Hua, Tian, Ziyin Xiang, Xiangling Xia, et al. "A Sensitivity-Optimized Flexible Capacitive Pressure Sensor with Cylindrical Ladder Microstructural Dielectric Layers." Sensors 23, no. 9 (2023): 4323. http://dx.doi.org/10.3390/s23094323.

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Flexible capacitive pressure sensors have attracted extensive attention due to their dynamic response and good sensing capability for static and small pressures. Using microstructural dielectric layers is an effective method for improving performance. However, the current state of microstructure design is primarily focused on basic shapes and is largely limited by simulation results; there is still a great deal of potential for further innovation and improvement. This paper innovatively proposes to increase the ladder structure based on the basic microstructures, for example, the long micro-ri

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Chen, Haisheng, Fang Hao, Shixing Huang та ін. "The Effects of Microstructure on the Dynamic Mechanical Response and Adiabatic Shearing Behaviors of a Near-α Ti-6Al-3Nb-2Zr-1Mo Alloy". Materials 16, № 4 (2023): 1406. http://dx.doi.org/10.3390/ma16041406.

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The formation and evolution of adiabatic shear behaviors, as well as the corresponding mechanical properties of a near-Ti-6Al-3Nb-2Zr-1Mo (Ti-6321) alloy during dynamic compression process, were systematically investigated by the split Hopkinson pressure bar (SHPB) compression tests in this paper. Ti-6321 samples containing three types of microstructures, i.e., equiaxed microstructure, duplex microstructure and Widmanstätten microstructure, were prepared to investigate the relationship between microstructures and dynamic mechanical behaviors under different strain rates in a range from 1000 s−

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Strobl, S., and R. Haubner. "Microstructures of iron meteorites." Practical Metallography 61, no. 9-10 (2024): 679–91. http://dx.doi.org/10.1515/pm-2024-0063.

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Abstract Meteorites originate from the early phase of our solar system and are wonderfully undefined and inhomogeneous. In terms of its composition and microstructure, one single meteorite has quite a few surprises in store. The iron meteorite microstructure depends essentially on the initial solidification of the melt in a larger asteroid or minor planet. The solidification process itself is a function of local element concentrations and the very slow cooling rate. Various collisions in space resulted in the fragmentation of the asteroids and the deformation of the microstructure. However, wh

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Snopiński, Przemysław, Krzysztof Matus, Ondřej Hilšer, and Stanislav Rusz. "Effects of Built Direction and Deformation Temperature on the Grain Refinement of 3D Printed AlSi10Mg Alloy Processed by Equal Channel Angular Pressing (ECAP)." Materials 16, no. 12 (2023): 4288. http://dx.doi.org/10.3390/ma16124288.

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In this work, we used an AlSi10Mg alloy produced by selective laser melting (SLM) to study the effects of build direction and deformation temperature on the grain refinement process. Two different build orientations of 0° and 90° and deformation temperatures of 150 °C and 200 °C were selected to study this effect. Light microscopy, electron backscatter diffraction and transmission electron microscopy were used to investigate the microtexture and microstructural evolution of the laser powder bed fusion (LPBF) billets. Grain boundary maps showed that the proportion of low-angle grain boundaries

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Alveen, Patricia, Declan McNamara, Declan Carolan, Neal Murphy, and Alojz Ivanković. "Micromechanical Modelling of Advanced Ceramics Using Statistically Representative Microstructures." Key Engineering Materials 577-578 (September 2013): 53–56. http://dx.doi.org/10.4028/www.scientific.net/kem.577-578.53.

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Advanced ceramics are a class of materials used as cutting tools in some of the most demanding material removal operations. Their high hardness makes them extremely suited for use at these extreme conditions. However they have a relatively low fracture toughness when compared to other conventional tool materials. A combined experimental-numerical method was used to investigate the role of microstructure on the fracture of advanced ceramics. In particular, the effect of grain size and matrix content were examined. Representative finite volume (FV) microstructures were created using Voronoi tess

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Jeya Ganesh, B., S. Raju, E. Mohandas, and M. Vijayalakshmi. "Effect of Thermal Aging on the Transformation Temperatures and Specific Heat Characteristics of 9Cr-1Mo Ferritic Steel." Defect and Diffusion Forum 279 (August 2008): 85–90. http://dx.doi.org/10.4028/www.scientific.net/ddf.279.85.

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The effect of thermal ageing on the heat capacity and transformation behaviour of behaviour of 9Cr-1Mo-0.1C (wt.%) ferritic / martensitic steel has been studied using differential scanning calorimetry (DSC) in the temperature range 473 to 1273 K. It is found that a-ferrite + carbide ® g-austenite phase transformation temperature is only mildly sensitive to microstructural details; but the enthalpy change associated with this phase transformation and especially, the change in specific heat around the transformation regime are found to be dependent on the starting microstructure generated by the

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Soares de Carvalho Mendes, Liduína. "Estudo do refinamento do grão da liga Ti6Al4V após tratamento térmico de envelhecimento, recozimento e têmpera." Revista InovaEducaTech 1, no. 1 (2025): 16. https://doi.org/10.63103/k73agx12.

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Heat treatment of titanium alloys, such as Ti-6Al-4V, is essential to adjust their mechanical and microstructural properties. Thus, heat treatments are essential to improve the properties of titanium alloys. This work aimed to investigate and characterize the effect of aging, annealing and tempering heat treatments on the grain refinement of Ti6Al4V alloy. Through aging, annealing and tempering heat treatment, the microstructure and hardness of 7 samples were analyzed. The analyzed samples were prepared for micrograph and microhardness analysis through metallographic technique after heat treat

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Agboola, Joseph, Emmanuel Anyoku, and Atinuke Oladoye. "Effects of Cooling Rate on the Microstructure, Mechanical Properties and Corrosion Resistance of 6xxx Aluminium Alloy." International Journal of Engineering Materials and Manufacture 6, no. 1 (2021): 43–49. http://dx.doi.org/10.26776/ijemm.06.01.2021.04.

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The applicability of materials is highly dependent on its microstructure and mechanical properties. Aluminium alloy is being used extensively under diverse conditions. This study investigates the effects of cooling rate on the microstructure, mechanical properties and corrosion resistance of 6xxx-series aluminium alloy. Aluminium ingot was melted in a muffle furnace and cast into rods. The cooling rate was controlled by holding the moulds at different temperatures. Microstructural characteristics were examined by optical microscopy. Mechanical properties such as impact strength, hardness, and

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Zheng, Xiaomeng, Yongzhen Zhang, and Sanming Du. "Preliminary Research on Response of GCr15 Bearing Steel under Cyclic Compression." Materials 13, no. 16 (2020): 3443. http://dx.doi.org/10.3390/ma13163443.

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During the bearing service, a series of microstructural evolutions will arise inside the material, such as the appearance of feature microstructures. The essential reason for the microstructural evolution is the cumulative effect of cyclic stress. The Hertz Contact formula is usually adopted to calculate the internal stress, and there is a correlation between the shape and distribution of the feature microstructure and the stress distribution. But it is insufficient to explain the relationship between the morphology of feature microstructures and the rolling direction, such as specific angles

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Rozprawy doktorskie na temat "It was found that the microstructure"

Alessandrini, Cameron. "Radiogenic Dating and Microstructure Analysis of Shear Zones Found Within the Seve Nappe Complex in the Åre Region, Jämtland, Scandinavian Caledonides." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-332954.

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The North Atlantic Caledonides are a continent-continent collision type orogeny found in WesternScandinavia, Svalbard, Greenland and the British Isles. They are thought to have formed as a result of a complex history consisting of repeated ocean opening and closure. The tectonostratigraphy of the Scandinavian Caledonides consists of four allochthons that overlay the crystalline, autochthonous basement. The allochthons are thought to have been transported hundreds of kilometers eastward during the Scandian collision.To investigate the complex history of the Scandinavian Caledonides, a scientifi

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Schemmann, Lars Verfasser], Stefan [Akademischer Betreuer] Zaefferer, Dierk [Akademischer Betreuer] [Raabe, and Wolfgang [Akademischer Betreuer] Bleck. "The inheritance of different microstructures found after hot rolling on the properties of a completely annealed DP-steel / Lars Schemmann ; Stefan Zaefferer, Dierk Raabe, Wolfgang Bleck." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1130589811/34.

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Schemmann, Lars [Verfasser], Stefan Akademischer Betreuer] Zaefferer, Dierk [Akademischer Betreuer] [Raabe, and Wolfgang [Akademischer Betreuer] Bleck. "The inheritance of different microstructures found after hot rolling on the properties of a completely annealed DP-steel / Lars Schemmann ; Stefan Zaefferer, Dierk Raabe, Wolfgang Bleck." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1130589811/34.

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Belliston, Sunny L. "Found." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1375113138.

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Riley, Megan E. "Found Cairn." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1828.

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Büscher, Barbara. "Lost & Found." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-25431.

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Patrick, Denise L. "Lost and Found." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2101.

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Mattax, Megan. "Forgotten, Found, Forgiven." VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/2354.

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My work deals with loss and the emotions entangled with grief. To do this, I incorporate text, found organic imagery, bound fibers, and hand-spun threads into my work. I relate these objects and materials to the stages of a woman’s life, which is a symbolic reference to the nymph, mother, and crone and the transformation from life to death. The background surface of information in my two-dimensional work serves as a cryptic guide to the actual meaning of things. All the excerpted information comes from medical or general knowledge dictionaries. This g

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Kazi-Nance, Ambata K. "Lost and Found." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2614.

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Bell, Matthew D. "How They Were Found." Bowling Green State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1269253433.

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Książki na temat "It was found that the microstructure"

Bennett, Richard H., and Matthew H. Hulbert. Clay Microstructure. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4684-2.

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Abergel, Frédéric, Jean-Philippe Bouchaud, Thierry Foucault, Charles-Albert Lehalle, and Mathieu Rosenbaum, eds. Market Microstructure. John Wiley & Sons Ltd, 2012. http://dx.doi.org/10.1002/9781118673553.

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H, Hulbert Matthew, ed. Clay microstructure. International Human Resources Development Corp., 1986.

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Capriz, Gianfranco. Continua with Microstructure. Springer New York, 1989. http://dx.doi.org/10.1007/978-1-4612-3584-2.

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Enamel Microstructure Workshop, University of Bonn (1994 Andernach, Rhine). Tooth enamel microstructure. A.A. Balkema, 1997.

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Capriz, G. Continua with Microstructure. Springer New York, 1989.

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United States. National Aeronautics and Space Administration., ed. Microstructure: Property correlation. National Aeronautics and Space Administration, 1990.

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Peggs, ID, ed. Geosynthetics: Microstructure and Performance. ASTM International, 1990. http://dx.doi.org/10.1520/stp1076-eb.

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Kinderlehrer, David, Richard James, Mitchell Luskin, and Jerry L. Ericksen, eds. Microstructure and Phase Transition. Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4613-8360-4.

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Axelrad, David R., and Wolfgang Muschik, eds. Constitutive Laws and Microstructure. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83303-8.

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Części książek na temat "It was found that the microstructure"

Tsimpli, Ianthi Maria, Lina Mukhopadhyay, Anusha Balasubramanian, and Jeanine Treffers-Daller. "Chapter 4. Microstructural properties in the narrative retellings of young English learners in EMI schools in India." In Studies in Bilingualism. John Benjamins Publishing Company, 2024. http://dx.doi.org/10.1075/sibil.66.04tsi.

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The present study investigates narrative microstructure in the English oral retellings of primary school children from disadvantaged backgrounds in India. For these children, the combination of rich linguistic diversity and English as the medium of instruction is a challenge since exposure to English is almost exclusively in the school context. Measures of microstructure include syntactic complexity and finiteness marking as well-known indices of English language ability. Microstructural properties are examined in relation to literacy performance in order to identify possible links between the

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Liu, Jianping, Weimin Chen, Jixia Zhang, Xiangqian Xie, and Guoshuai Xie. "Effects of Coal Metakaolin on Compressive Strength and Microstructure of Cemented Soil." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_12.

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AbstractIn this paper, compressive strength tests are conducted on the cemented soil with five coal metakaolin (CMK) contents to study the effects of CMK on the cemented soil compressive strength and microstructure. It is found that CMK can enhance the strength of cemented soil. Especially, when the CMK content is 3%, its compressive strength is obviously higher than that of unmixed CMK cemented soil. The effects of CMK on the strength of cemented soil is analyzed and discussed by means of X-ray diffraction (XRD) and scanning electron microscopy image (SEM) analysis. The strength mechanism of

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Holzer, Lorenz, Philip Marmet, Mathias Fingerle, Andreas Wiegmann, Matthias Neumann, and Volker Schmidt. "Review of Theories and a New Classification of Tortuosity Types." In Tortuosity and Microstructure Effects in Porous Media. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30477-4_2.

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AbstractMany different definitions of tortuosity can be found in literature. In addition, also many different methodologies are nowadays available to measure or to calculate tortuosity. This leads to confusion and misunderstanding in scientific discussions of the topic. In this chapter, a thorough review of all relevant tortuosity types is presented. Thereby, the underlying concepts, definitions and associated theories are discussed in detail and for each tortuosity type separately. In total, more than 20 different tortuosity types are distinguished in this chapter. In order to avoid misinterp

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Balokhonov, Ruslan R., and Varvara A. Romanova. "Microstructure-Based Computational Analysis of Deformation and Fracture in Composite and Coated Materials Across Multiple Spatial Scales." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_17.

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AbstractA multiscale analysis is performed to investigate deformation and fracture in the aluminum-alumina composite and steel with a boride coating as an example. Model microstructure of the composite materials with irregular geometry of the matrix-particle and substrate-coating interfaces correspondent to the experimentally observed microstructure is taken into account explicitly as initial conditions of the boundary value problem that allows introducing multiple spatial scales. The problem in a plane strain formulation is solved numerically by the finite-difference method. Physically-based

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Khanh, Luong Quoc, Tran Hoang Phuc, Nguyen Dinh Quang, et al. "The Effect of Glass Fiber on the Notched Izod Impact Strength of Polybutylene Terephthalate/Glass Fiber Blends’." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_49.

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AbstractImproving the fire resistance of polymer and construction materials is an urgent requirement today. This article aims to study the incorporation of Polybutylene terephthalate (PBT), a versatile polymer used in most glass fiber (GF) combination fields, to study their fire resistance and impact resistance for manufacturing battery housings. We conducted injection molding and scanning electrode microscopy (SEM) and had the expected results. The impact strength of PBT/GF samples measured according to ASTM D256 is 4.69, 4.43, 3.71, 4.67, and 6.28 kJ/m2. The PBT/25% GF sample achieved the hi

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Li, X., Y. Yao, D. Zhang, Z. Zhang, and Y. Zhuge. "Development of High-Strength Light-Weight Cementitious Composites with Hollow Glass Microspheres." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_25.

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AbstractAchieving both light-weight and high-strength cementitious composites (HSLWCCs) is challenging. In this study, hollow glass microspheres (HGMs) were used to develop a HSLWCC. Different amounts of HGMs were incorporated in the cement mixture and the associated effects on the engineering properties and microstructure were investigated. The results showed that the density and strength decreased with increasing HGM content. Compressive strength of the HSLWCC decreased significantly when the HGM content increased from 30 to 40% and decreased slightly with further increasing HGM content, whi

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Nayak, Soumyaranjan, Abhishek Kumar Singh, Hina Gokhale, M. J. N. V. Prasad, and K. Narasimhan. "A Numerical Study to Analyze the Effect of Process Parameters on Ring Rolling of Ti-6Al-4V Alloy by Response Surface Methodology." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-58006-2_25.

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AbstractHot ring rolling is a production method to manufacture seamless rings. It is a complex incremental metal-forming process where reduction of cross-section leads to increase in diameter of the ring via circumferential extrusion. High degree of non-linearity and asymmetry is associated with the process. The process results in non-uniform distribution of temperature and plastic strain in the ring cross-section, and this in turn significantly affects the deformation behavior, microstructure, and mechanical properties. Form defect like fishtail defect is also a major concern and incurs loss

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Fang, Fengzhou, and Nan Zhang. "Microstructure." In CIRP Encyclopedia of Production Engineering. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-642-35950-7_16727-1.

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Rindler, Filip. "Microstructure." In Universitext. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77637-8_9.

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Miller, Michael K. "Microstructure." In Bulk Metallic Glasses. Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-48921-6_5.

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Streszczenia konferencji na temat "It was found that the microstructure"

Snitzer, John, Xiaoyuan Lou, Bingqiang Wei, and Jian Wang. "Influence of Solution Annealing on Creep Behavior of Additively Manufactured 316H SS Using Microstructurally Graded Specimen." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0994.

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Abstract Laser additive manufacturing (AM) is being considered by the nuclear industry to manufacture net- shape components for advanced reactors and micro reactors. Part-to-part and vendor-to-vendor variations in part quality, microstructure, and mechanical properties are common for additively manufactured components, attributing to the different processing conditions. This work demonstrates the use of microstructurally graded specimen as a high throughput means to establish the relationship between process-microstructure-creep properties. Through graded specimen manufacturing, multiple micro

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Krajcarz, Florent, Fiona Ruel, Saghi Saedlou, and Amélie Fanica. "Effect of the Superduplex Microstructure on the Susceptibility to Hydrogen Induced Stress Cracking." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13062.

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Abstract Heat treatments have been performed on superduplex UNS S32750 sheets in order to obtain a panel of microstructures: free from σ-phase, presence of centerline intermetallic stringers, presence of σ-phase over the full thickness and coarse duplex microstructure. Slow strain rate tensile test under cathodic charging in simulated deep sea water was used to investigate the influence of the achieved superduplex microstructures on the susceptibility to hydrogen induced stress cracking (HISC). No effect of centerline intermetallic stringers (up to 0.08% of σ-phase) on HISC susceptibility has

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Mishra, B., S. Al-Hassan, D. L. Olson, and M. M. Salama. "Prediction of Microstructural Effect on Corrosion of Linepipe Steels in CO2-Brine Solution." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93090.

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Abstract CO2 corrosion in a wet gas pipeline is influenced by pH, temperature, partial pressure of CO2, oxygen content, H2S level, flow rate of the solution, solid particles content, surface condition, water chemistry and oil condensate drop out. The microstructure of steel has also been found to affect the corrosion rate because of its impact on the corrosion scale characteristics. The mechanism and characteristics of iron carbonate scale formation on API X-52 grade of steel and the pertinent factors that affect the corrosion rate under different heat treatment conditions in a CO2 - brine sol

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Singh, Preet M., Steven J. Pawel, Dong Yang, and Jamshad Mahmood. "Stress Assisted Corrosion in Boiler Tubes - Failure Analysis." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07443.

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Abstract Stress assisted corrosion (SAC) of carbon steel boiler tubes is one of the major causes of waterside failure in industrial boilers. SAC is a major concern for kraft recovery boilers in the pulp and paper industry as any water leak into the furnace can cause a smelt-water explosion in the boiler. Failed carbon steel boiler tubes from different kraft recovery boilers were examined to understand the role of carbon steel microstructure on crack initiation and SAC crack morphology. A number of carbon steel tubes showed a deep decarburized layer on the inner surface (water-touched) and also

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Garfias-Mesias, L. F. "The Effect of Microstructure on the Pitting Resistance of Duplex Stainless Steels." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-06000.

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Abstract The effect of the microstructure (ferrite/austenite ratio, grain size and inclusions) on the Pitting Resistance of a UNS S32550 Duplex Stainless Steels (DSS) was studied in chloride containing solutions. Increasing the ferrite content in the matrix of the UNS S32550 (by annealing the alloy at a higher temperature) resulted in a lower Critical Pitting Temperature (CPT) of the alloy. Re-annealing the material to increase the grain size of the austenite resulted in an increased CPT. Microscopy on the inclusions before electrochemical measurements showed that the precursor sites for pitti

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Videla, H. A., M. F. L. de Mele, D. A. Moreno, J. Ibars, and C. Ranninger. "Influence of Microstructure on the Corrosion Behavior of Different Stainless Steels." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91104.

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Abstract The effect of the aggressive anions, chloride and sulphide, and their mixtures on the localized corrosion resistance of AISI (1) 410 and 304 stainless steel (SS) with different microstructural characteristics has been studied. A synergistic effect of these anions on pitting attack was found. Tempered states of 410 SS show less localized corrosion resistance than the other states, whereas 304 SS sensitized metal probes were the most affected by localized corrosion. A comparison between the effect of biogenic and inorganic sulphides and the study of bacterial adhesion on SS surfaces wer

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Isobe, Yoshihiro, Junji Etoh, Mitsuyuki Sagisaka, et al. "Ultrasonic NDE for Irradiation-Induced Material Degradations." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16850.

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We have developed a prediction model of ultrasonic wave changes caused by microstructural changes in 304 stainless steel based on the theory of ultrasonic wave propagation and experimental results. The correlation between microstructure and ultrasonic waves was simulated in the model with microstructure components such as grain boundaries, voids, precipitates and dislocations taken into account. Material parameters used for the prediction model were determined from the literature, microscopic observations, and experimental results obtained from archive materials. Calculations were performed as

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Wang, Zhiyu, Christopher Saldana, and Saurabh Basu. "Subsurface Microstructure and Crystallographic Texture in Surface Severe Plastic Deformation Processes." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2915.

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Severe plastic burnishing was investigated as a promising surface severe plastic deformation technique for generating gradient microstructure surfaces. The deformed state of oxygen free high conductivity copper workpieces during the surface deformation process was determined with high-speed imaging, this complemented by microstructure characterization using orientation image microscopy based on electron backscatter diffraction. Varying deformation levels in terms of both magnitude and gradient on the processed surface were achieved through control of the incident tool angle. Refined microstruc

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Chuzhoy, L., R. E. DeVor, S. G. Kapoor, and D. J. Bammann. "Microstructure-Level Modeling of Ductile Iron Machining." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/med-23314.

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Abstract A microstructure-level model for simulation of machining of cast irons using the finite element method is presented. The model explicitly combines ferritic and pearlitic grains with graphite nodules to produce the ductile iron structure. The behaviors of pearlite, ferrite, and graphite are captured individually using an internal state variable model for the material model. The behavior of each phase is dependent on strain, strain rate, temperature, and amount of damage. Extensive experimentation was conducted to characterize material strain rate and temperature dependency of both ferr

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Lee, Ying-Liang R., Olga K. Rowan, and Michael A. Pershing. "Ring Gear Microstructure and Heat Treat Response." In HT 2015. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.ht2015p0550.

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Abstract Ring gear distortion from heat treatment processes has been a challenge to gear manufacturers. To provide good post heat treatment dimensions, efforts have been made to optimize post heat treat controls such as quench apparatus, quench severity and post heat treatment grinding. However, the impact of prior-to-heat treatment gear microstructure is not fully understood. In this study, ring gears with different prior-to-heat treatment (initial) microstructures were compared against post-heat treatment dimensional measurements. Statistical analyses were performed on data collected over 2

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Raporty organizacyjne na temat "It was found that the microstructure"

Asenath-Smith, Emily, Ross Lieblappen, Susan Taylor, et al. Observation of crack arrest in ice by high aspect ratio particles during uniaxial compression. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/43145.

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In nature, ice frequently contains dissolved solutes or entrapped particles, which modify the microstructure and mechanical properties of ice. Seeking to understand the effect of particle shape and geometry on the mechanical properties of ice, we performed experiments on ice containing 15 wt% silica spheres or rods. Unique to this work was the use of 3-D microstructural imaging in a -10ºC cold room during compressive loading of the sample. The silica particles were present in the ice microstructure as randomly dispersed aggregates within grains and at grain boundaries. While cracks originated

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Thurston, Alison, Zoe Courville, Lauren Farnsworth, et al. Microscale dynamics between dust and microorganisms in alpine snowpack. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40079.

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Dust particles carry microbial and chemical signatures from source regions to deposition regions. Dust and its occupying microorganisms are incorporated into, and can alter, snowpack physical properties including snow structure and resultant radiative and mechanical properties that in turn affect larger-scale properties, including surrounding hydrology and maneuverability. Microorganisms attached to deposited dust maintain genetic evidence of source substrates and can be potentially used as bio-sensors. The objective of this study was to investigate the impact of dust-associated microbial depo

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Ucak-Astarlioglu, Mine, Jedadiah Burroughs, Charles Weiss, et al. Graphene in cementitious materials. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/48033.

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This project aims to determine the influence of laboratory-generated graphene (LGG) and commercial-grade graphene (CGG) on the chemical structure and compressive strength of graphene-cement mixtures. Determining the graphene-cement structure/processing/property relationships provides the most useful information for attaining the highest compressive strength. Graphene dose and particle size, speed of mixing, and dispersant agent were found to have important roles in graphene dispersion by affecting the adhesion forces between calcium silicate hydrate (CSH) gels and graphene surfaces that result

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Carroll, Jay, Kaitlynn Fitzgerald, Hojun Lim, et al. Microstructure Clones. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2462914.

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Moore, A. S., C. A. Thomas, and T. M. Reese. Microstructure Filled Hohlraums. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1345335.

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Gregg, Michael C., and Jack B. Miller. Modular Microstructure Profiler (MMP). Defense Technical Information Center, 2007. http://dx.doi.org/10.21236/ada605602.

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Olson, Gregory B. Dynamic Microstructure Design Consortium. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada544619.

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Twesten, R. D., J. M. Millunchick, S. R. Lee, et al. Microstructure of compositionally modulated InAlAs. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/453541.

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Caturla, M. Microstructure evolution in irradiated materials. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/15002353.

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Lawn, Brian R., Peter L. Swanson, Carolyn J. Fairbanks, Bernard J. Hockey, and Yiu-Wing Mai. Strength and Microstructure of Ceramics. Defense Technical Information Center, 1987. http://dx.doi.org/10.21236/ada190712.

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