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Journal articles on the topic 'Microstructural study'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Suzuki, Asuka, Yusuke Sasa, Makoto Kobashi, et al. "Persistent Homology Analysis of the Microstructure of Laser-Powder-Bed-Fused Al–12Si Alloy." Materials 16, no. 22 (2023): 7228. http://dx.doi.org/10.3390/ma16227228.

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The laser powder bed fusion (L-PBF) process provides the cellular microstructure (primary α phase surrounded by a eutectic Si network) inside hypo-eutectic Al–Si alloys. The microstructure changes to the particle-dispersed microstructure with heat treatments at around 500 °C. The microstructural change leads to a significant reduction in the tensile strength. However, the microstructural descriptors representing the cellular and particle-dispersed microstructures have not been established, resulting in difficulty in terms of discussion regarding the structure–property relationship. In this stu

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2

Gallardo-Basile, Francisco-José, Yannick Naunheim, Franz Roters, and Martin Diehl. "Lath Martensite Microstructure Modeling: A High-Resolution Crystal Plasticity Simulation Study." Materials 14, no. 3 (2021): 691. http://dx.doi.org/10.3390/ma14030691.

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Lath martensite is a complex hierarchical compound structure that forms during rapid cooling of carbon steels from the austenitic phase. At the smallest, i.e., ‘single crystal’ scale, individual, elongated domains, form the elemental microstructural building blocks: the name-giving laths. Several laths of nearly identical crystallographic orientation are grouped together to blocks, in which–depending on the exact material characteristics–clearly distinguishable subblocks might be observed. Several blocks with the same habit plane together form a packet of which typically three to four together

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3

Höche, Nils, Eric O. Walliser, Niels J. de Winter, Rob Witbaard, and Bernd R. Schöne. "Temperature-induced microstructural changes in shells of laboratory-grown Arctica islandica (Bivalvia)." PLOS ONE 16, no. 2 (2021): e0247968. http://dx.doi.org/10.1371/journal.pone.0247968.

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Bivalve shells are increasingly used as archives for high-resolution paleoclimate analyses. However, there is still an urgent need for quantitative temperature proxies that work without knowledge of the water chemistry–as is required for δ18O-based paleothermometry–and can better withstand diagenetic overprint. Recently, microstructural properties have been identified as a potential candidate fulfilling these requirements. So far, only few different microstructure categories (nacreous, prismatic and crossed-lamellar) of some short-lived species have been studied in detail, and in all such stud

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4

Weng, Yung-Jin, Jen-Ching Huang, Yueh-Yang Chen, Shao-Teng Hsu, and Zu-Rong Zhang. "A Study on the Dynamic Forming Mechanism Development of the Negative Poisson’s Ratio Elastomer Molds—Plate to Plate (P2P) Forming Process." Polymers 13, no. 19 (2021): 3255. http://dx.doi.org/10.3390/polym13193255.

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This study proposed a dynamic forming mechanism development of the negative Poisson’s ratio elastomer molds—plate to plate (P2P) forming process. To dynamically stretch molds and control the microstructural shape, the proposal is committed to using the NPR structure as a regulatory mechanism. The NPR structural and dynamic parallel NPR-molds to control microstructure mold-cores were simulated and analyzed. ANSYS and MATLAB were used to simulate and predict dynamic NPR embossing replication. The hot-embossing and UV-curing dynamic NPR P2P-forming systems are designed and developed for verificat

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5

Sidor, Jurij J. "Quantitative Indicators of Microstructure and Texture Heterogeneity in Polycrystalline System." Materials 17, no. 24 (2024): 6057. https://doi.org/10.3390/ma17246057.

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The microstructural features of polycrystals determine numerous properties, whereas the evolution of crystallographic texture is responsible for the anisotropy of particular properties. Therefore, it is of crucial importance to find proper quantitative indicators, which reflect the nature of microstructure and texture characteristics. This is partially performed by the assessment of the average grain size and texture intensity that provide basic information on the microstructural features evolved; however, often, the basic quantitative indicators are not capable of revealing the complete micro

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6

Abdalla, Ayad Omran, Astuty Amrin, Roslina Mohammad, and M. A. Azmah Hanim. "Microstructural Study of Newly Designed Ti-6Al-1Fe Alloy through Deformation." Solid State Phenomena 264 (September 2017): 54–57. http://dx.doi.org/10.4028/www.scientific.net/ssp.264.54.

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Recently, iron (Fe) is introduced to substitute vanadium (V) in Ti-alloy. Therefore, new (α+β) titanium alloy, Ti-6Al-1Fe was designed through a complete replacement of V by Fe with major composition modifications of Ti-6Al-4V. This new alloy is believed could provide similar properties of Ti-6Al-4V through modification of its microstructures. Different heat treatments can lead to a diversity of microstructural permutations and combinations. Thus, it is very crucial to study in-depth understanding about the microstructure of Ti-6Al-1Fe. Results reveal that the microstructure of as-received all

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7

Xi, Shangbin, and Yu Su. "Phase Field Study of the Microstructural Dynamic Evolution and Mechanical Response of NiTi Shape Memory Alloy under Mechanical Loading." Materials 14, no. 1 (2021): 183. http://dx.doi.org/10.3390/ma14010183.

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For the purpose of investigating the microstructural evolution and the mechanical response under applied loads, a new phase field model based on the Ginzburg-Landau theory is developed by designing a free energy function with six potential wells that represent six martensite variants. Two-dimensional phase field simulations show that, in the process of a shape memory effect induced by temperature-stress, the reduction-disappearance of cubic austenite phase and nucleation-growth of monoclinic martensite multi-variants result in a poly-twined martensitic microstructure. The microstructure of mar

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8

Herbster, Maria, Karsten Harnisch, Paulina Kriegel, et al. "Microstructural Modification of TiAl6V4 Alloy to Avoid Detrimental Effects Due to Selective In Vivo Crevice Corrosion." Materials 15, no. 16 (2022): 5733. http://dx.doi.org/10.3390/ma15165733.

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TiAl6V4 wrought alloy is a standard material used for endoprostheses due to its ideal characteristics in terms of osseointegration. However, the insufficient wear and crevice corrosion resistance of TiAl6V4 are limiting factors that can cause clinical problems. Therefore, the objective of this study was to analyze and identify suitable phases and microstructural states of TiAl6V4 alloy with advantageous implant properties by thermal treatments. By varying the temperature and cooling rate, four heat treatment strategies were derived that produced different microstructural states that differed i

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9

Kulosa, Matthias, Matthias Neumann, Martin Boeff, Gerd Gaiselmann, Volker Schmidt, and Alexander Hartmaier. "A Study on Microstructural Parameters for the Characterization of Granular Porous Ceramics Using a Combination of Stochastic and Mechanical Modeling." International Journal of Applied Mechanics 09, no. 05 (2017): 1750069. http://dx.doi.org/10.1142/s1758825117500697.

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To correlate the mechanical properties of granular porous materials with their microstructure, typically porosity is being considered as the dominant parameter. In this work, we suggest the average coordination number, i.e., the average number of connections that each grain of the porous material has to its neighboring grains, as additional — and possibly even more fundamental — microstructural parameter. In this work, a combination of stochastic and mechanical modeling is applied to study microstructural influences on the elastic properties of porous ceramics. This is accomplished by generati

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10

Kumar, Swarup, Asif Uzzaman, Md Ibrahim Adam, and Sree Biddut Kumar. "A Comprehensive Review of Prospects and Challenges of Microstructure and Functional Properties of Materials." European Journal of Theoretical and Applied Sciences 3, no. 2 (2025): 356–70. https://doi.org/10.59324/ejtas.2025.3(2).31.

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This thorough analysis examines the opportunities and difficulties related to improving the microstructure and functional characteristics of materials. Phases, grain boundaries, dislocations, and other flaws are examples of the microstructure, which is an essential component in defining the functional properties of a material, such as its electrical conductivity, mechanical strength, thermal stability, and resistance to corrosion. The production of materials with improved performance for a range of applications has been made possible by improvements in materials processing methods, such as sev

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Swarup, Kumar, Uzzaman Asif, Ibrahim Adam Md, and Biddut Kumar Sree. "A Comprehensive Review of Prospects and Challenges of Microstructure and Functional Properties of Materials." European Journal of Theoretical and Applied Sciences 3, no. 2 (2025): 356–70. https://doi.org/10.59324/ejtas.2025.3(2).31.

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This thorough analysis examines the opportunities and difficulties related to improving the microstructure and functional characteristics of materials. Phases, grain boundaries, dislocations, and other flaws are examples of the microstructure, which is an essential component in defining the functional properties of a material, such as its electrical conductivity, mechanical strength, thermal stability, and resistance to corrosion. The production of materials with improved performance for a range of applications has been made possible by improvements in materials processing methods, such as sev

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12

Torrent, Christof J. J., Seyed Vahid Sajadifar, Gregory Gerstein, Julia Richter, and Thomas Niendorf. "Influence of Various Processing Routes in Additive Manufacturing on Microstructure and Monotonic Properties of Pure Iron—A Review-like Study." Metals 14, no. 5 (2024): 557. http://dx.doi.org/10.3390/met14050557.

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Additive manufacturing processes have attracted broad attention in the last decades since the related freedom of design allows the manufacturing of parts with unique microstructures and unprecedented complexity in shape. Focusing on the properties of additively manufactured parts, major efforts are made to elaborate process-microstructure relationships. For instance, the inevitable thermal cycling within the process plays a significant role in microstructural evolution. Various driving forces contribute to the final grain size, boundary character, residual stress state, etc. In the present stu

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13

Talmon, Yeshayahu. "Cryo-TEM of amphiphilic polymer and amphiphile/polymer solutions." Proceedings, annual meeting, Electron Microscopy Society of America 51 (August 1, 1993): 876–77. http://dx.doi.org/10.1017/s0424820100150216.

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To achieve complete microstructural characterization of self-aggregating systems, one needs direct images in addition to quantitative information from non-imaging, e.g., scattering or Theological measurements, techniques. Cryo-TEM enables us to image fluid microstructures at better than one nanometer resolution, with minimal specimen preparation artifacts. Direct images are used to determine the “building blocks” of the fluid microstructure; these are used to build reliable physical models with which quantitative information from techniques such as small-angle x-ray or neutron scattering can b

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14

Yang, Hongyue, Ji Qian, Ming Yang, Chunxi Li, Hengfan Li, and Songling Wang. "Study on the Effects of Microstructural Surfaces on the Attachment of Moving Microbes." Energies 13, no. 17 (2020): 4421. http://dx.doi.org/10.3390/en13174421.

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The research of marine antifouling is mainly conducted from the aspects of chemistry, physics, and biology. In the present work, the movement model of microorganisms along or against the flow direction on the microstructural surface was established. The model of globose algae with a diameter of 5 μm in the near-wall area was simulated by computational fluid dynamics (CFD), and the fluid kinematic characteristics and shear stress distribution over different-sized microstructures and in micropits were compared. Simulation results revealed that the increase of the β value (height to width ratio)

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15

Sarat, Chandra Mohanty1. "Effect Of Melt Temperature on Microstructural and Strength Properties of In-Situ Aluminium Metal Matrix Composites Containing Sicno Particles." Scandinavian Journal of Information Systems 35, no. 1 (2023): 783–88. https://doi.org/10.5281/zenodo.7807916.

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In SiCON aluminum metal matrix composites containing SiCON particles have been attracted to a significant desirable property of mechanical such as high strength, wear resistance and stability. The melt temperature is having a critical parameter while manufacturing process of these composites and this affects the size and the reinforcement particles in the aluminum matrix which influnces the microstructural and propertie sof mechanical properties of the composite material. In this we have review the therotical basis of the effect of melt temperature on the microstructural and properties of mech

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16

Rakesh, C., Ravi Babu T., Vandna Kumari, Sonali Jayronia, Fouad A. Al-Saady, and Amandeep Nagpal. "Multiscale Characterization of Microstructural Evolution in Powder Metallurgy and Ceramic Forming Processes." E3S Web of Conferences 430 (2023): 01128. http://dx.doi.org/10.1051/e3sconf/202343001128.

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The microstructural evolution of materials during powder metallurgy and ceramic forming processes is a complex phenomenon that spans multiple length scales. In this study, we present a comprehensive multiscale characterization of the microstructural changes occurring during these processes. We employ a combination of advanced experimental techniques, including high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), and X-ray diffraction (XRD), to investigate the microstructural features at various length scales. Our results reveal the intricate interplay b

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17

Fan, Fang-Yu, Hsin-Hua Chou, Wei-Chun Lin, et al. "Optimized Micro-Pattern Design and Fabrication of a Light Guide Plate Using Micro-Injection Molding." Polymers 13, no. 23 (2021): 4244. http://dx.doi.org/10.3390/polym13234244.

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This study examined the uniformity of illuminance field distributions of light guide plates (LGPs). First, the authors designed microstructural patterns on the surface of an LGP. Then, a mold of the LGP with the optimal microstructural design was fabricated by a photolithography method. Micro-injection molding (μIM) was used to manufacture the molded LGPs. μIM technology can simultaneously manufacture large-sized wedge-shaped LGPs and micro-scale microstructures. Finally, illuminance values of the field distributions of the LGPs with various microstructures were obtained through optical field

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18

Ahmad, Owais, Rakesh Maurya, Rajdip Mukherjee, and Somnath Bhowmick. "Integrated Phase Field and Machine Learning Study of Microstructure Evolution during Interface-Controlled Spinodal Decomposition." Solid State Phenomena 357 (June 11, 2024): 101–6. http://dx.doi.org/10.4028/p-6w4ixl.

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This study leverages artificial intelligence (AI) to advance materials science, focusing on microstructural evolution in binary alloys during spinodal decomposition. Following the formulation of Zhu et al., we explore the microstructure evolution during interface-controlled spinodal decomposition. A comprehensive dataset captures the dynamic microstructural changes, highlighting the model's efficiency in analyzing complex data. The innovative use of an Autoencoder- ConvLSTM model enables precise, low-error microstructural transformation predictions, demonstrating AI’s potential in materials sc

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19

Gao, Menglin, Shengjun Xia, Chunfa Huang, et al. "Study of Microstructure and Mechanical Properties of 800H Alloy During Creep." Materials 18, no. 4 (2025): 912. https://doi.org/10.3390/ma18040912.

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Creep is one of the primary degradation mechanisms affecting the performance of the 800H alloy under long-term high-temperature stress conditions. Understanding the microstructural evolution during creep and developing a quantitative model to relate these changes to mechanical properties are essential for assessing creep damage and ensuring the safe operation of high-temperature equipment. By conducting a multiscale quantitative characterization of the microstructures in the 800H alloy across different creep stages, we systematically examined the evolution of various microstructural features a

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20

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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21

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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22

Prüger, Stefan, Ashutosh Gandhi, and Daniel Balzani. "Influence of microstructure morphology on multi-scale modeling of low-alloyed TRIP-steels." Engineering Computations 35, no. 2 (2018): 499–528. http://dx.doi.org/10.1108/ec-01-2017-0009.

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Purpose The purpose of this study is to quantify the impact of the variation of microstructural features on macroscopic and microscopic fields. The application of multi-scale methods in the context of constitutive modeling of microheterogeneous materials requires the choice of a representative volume element (RVE) of the considered microstructure, which may be based on some idealized assumptions and/or on experimental observations. In any case, a realistic microstructure within the RVE is either computationally too expensive or not fully accessible by experimental measurement techniques, which

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Sachana, Suphattra, Kohei Morishita, and Hirofumi Miyahara. "Microstructural Examination of Molten Marks on Copper Wire for Fire Investigation." Forensic Sciences 3, no. 1 (2023): 12–19. http://dx.doi.org/10.3390/forensicsci3010002.

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Fire investigators have attempted to study fire behaviors through microstructural examination of molten marks on copper wire. However, there have not been many studies on the metallurgical examination of real-world cases. This research examined the surface morphology and microstructure in the longitudinal section of molten marks on copper wire from various fire scenes to explain how they formed and identify the surrounding materials. The results show that the foreign elements discovered via EDS on the surface of molten marks vary depending on their environment. Molten mark microstructures diff

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24

CHEN, YINGCHUN, and KAZUHIRO NAKATA. "FRICTION STIR PROCESSING OF SKD61 TOOL STEEL." International Journal of Modern Physics B 23, no. 06n07 (2009): 1116–21. http://dx.doi.org/10.1142/s0217979209060555.

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In this study, SKD61 tool steel was friction stir processed (FSP) using a polycrystalline cubic boron nitride (PCBN) tool. Microstructure evolution and mechanical property in FSP zone were investigated. Microstructural observation results showed that the microstructures in FSP zone surface were fine grains in the range of 1 - 4 μm due to large plastic deformation during FSP. Micro-hardness test results showed that the average hardness value in FSP zone was 773 HV, 3.7 times the hardness in base metal (210 HV). The wear test results showed that FSP surface showed a significantly lower wear rate

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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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Zengin, Hüseyin, Andrei Ionut Mardare, Andreas Greul, et al. "Insights into the Corrosion Behavior of Pure Magnesium and Magnesium–Calcium Alloy (Mg-1.8 at.% Ca) in Thin-Film and Bulk Forms." Materials 18, no. 7 (2025): 1416. https://doi.org/10.3390/ma18071416.

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This study investigates the microstructural and corrosion properties of pure magnesium (Mg) and Mg-1.8Ca (at.%) alloy in both bulk and thin-film forms. Microstructure investigations showed that the addition of calcium (Ca) to Mg resulted in significant differences in microstructures. The bulk pure Mg exhibited coarse and elongated α-Mg grains, which were refined by Ca addition, together with the formation of a Mg2Ca intermetallic phase distributed throughout the microstructure. In contrast, thin-film Mg-1.8Ca alloys displayed a refined single-phase microstructure with uniform nm-scale grains a

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27

Reginster, Sylvie, Anne Mertens, Hakan Paydas, et al. "Processing of Ti Alloys by Additive Manufacturing: A Comparison of the Microstructures Obtained by Laser Cladding, Selective Laser Melting and Electron Beam Melting." Materials Science Forum 765 (July 2013): 413–17. http://dx.doi.org/10.4028/www.scientific.net/msf.765.413.

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In this study, samples of alloy Ti-6Al-4V have been processed by different additive manufacturing techniques in order to compare the resulting microstructure. In all three processes, ultrafast cooling gives rise to strongly out-of-equilibrium microstructures. However, the specific of the heat flow in each process lead to significant differences as far as the grains orientation and the resulting microstructural anisotropy are concerned.

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Ren, Jianping, Jiangfeng Chen, Songjun Chen, and Zhiwei Zou. "Microstructure heredity and phase transition behaviour of DP780 high-strength steel plate." Journal of Physics: Conference Series 2954, no. 1 (2025): 012117. https://doi.org/10.1088/1742-6596/2954/1/012117.

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Abstract Duplex steel is highly regarded as a lightweight material for automotive structures due to its superior mechanical properties. In this study, the microstructural heritability and phase transformation behavior of DP780 high-strength steel plates were examined. The results demonstrated that the microstructures of hot-rolled plates were consistent across different orientations within the same section, while notable differences were observed between the edge and core regions. After cold rolling, the microstructure became elongated in the rolling direction, accompanied by a noticeable grai

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29

Rodriguez vargas, Bryan ramiro, Luciano Albini, Giulia Tiracorrendo, Riccardo Massi, Giulia Stornelli, and Andrea Di Schino. "EFFECT OF ULTRAFAST HEATING ON AISI 304 AUSTENITIC STAINLESS STEEL." Acta Metallurgica Slovaca 29, no. 2 (2023): 104–7. http://dx.doi.org/10.36547/ams.29.2.1833.

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This study explores the effects of ultrafast heating on AISI 304 austenitic stainless steel. The research shows that ultrafast heating can lead to fine-grained mixed microstructures in steel, making it a potential alternative for modifying microstructure in stainless steel. The study demonstrates that a minimum temperature of 980 °C is required to achieve a fully recrystallized microstructure. The results also suggest that a lower temperature can result in a finer recrystallized grain size compared to higher temperature results. The study provides valuable insights into the impact of ultrafast

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Polozov, Igor, Kirill Starikov, Anatoly Popovich, and Vadim Sufiiarov. "Mitigating Inhomogeneity and Tailoring the Microstructure of Selective Laser Melted Titanium Orthorhombic Alloy by Heat Treatment, Hot Isostatic Pressing, and Multiple Laser Exposures." Materials 14, no. 17 (2021): 4946. http://dx.doi.org/10.3390/ma14174946.

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Titanium orthorhombic alloys based on intermetallic Ti2AlNb-phase are attractive materials for lightweight high-temperature applications. However, conventional manufacturing of Ti2AlNb-based alloys is costly and labor-consuming. Additive Manufacturing is an attractive way of producing parts from Ti2AlNb-based alloys. High-temperature substrate preheating during Selective Laser Melting is required to obtain crack-free intermetallic alloys. Due to the nature of substrate preheating, the temperature profile along the build height might be uneven leading to inhomogeneous microstructure and defects

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Sun, Dexin, Sen Lin, Yubo Wang, et al. "Study of Self-Locking Structure Based on Surface Microstructure of Dung Beetle Leg Joint." Biomimetics 9, no. 10 (2024): 622. http://dx.doi.org/10.3390/biomimetics9100622.

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Dung beetle leg joints exhibit a remarkable capacity to support substantial loads, which is a capability significantly influenced by their surface microstructure. The exploration of biomimetic designs inspired by the surface microstructure of these joints holds potential for the development of efficient self-locking structures. However, there is a notable absence of research focused on the surface microstructure of dung beetle leg joints. In this study, we investigated the structural characteristics of the surface microstructures present in dung beetle leg joints, identifying the presence of f

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Molento de Moraes, Carlos Eduardo, Carlos Antonio Reis Pereira Baptista, Marcelo Augusto dos Santos Torres, Maria Cindra Fonseca, and Antonio Jorge Abdalla. "Study of Fatigue in AISI 4340 Steel with Different Microstructural Conditions, Submitted to a Surface Treatment of Shot Peening." Materials Science Forum 869 (August 2016): 503–7. http://dx.doi.org/10.4028/www.scientific.net/msf.869.503.

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The AISI 4340 steel has been largely employed for structural purposes, which requires resistance levels with yield strength above 1400 MPa and it attains high levels of resistance in dual phase, bainitic or martensitic microstructural conditions. The samples of AISI 4340 steel with different microstructural conditions (martensitic, bainitic and ferritic/perlitic) have been submitted to fatigue tests on push-pull mode. Subsequently, the new specimens underwent a shot peening surface treatment and new fatigue tests. The results have been discussed in comparison to the three microstructural condi

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Charles Murgau, Corinne, Andreas Lundbäck, Pia Åkerfeldt, and Robert Pederson. "Temperature and Microstructure Evolution in Gas Tungsten Arc Welding Wire Feed Additive Manufacturing of Ti-6Al-4V." Materials 12, no. 21 (2019): 3534. http://dx.doi.org/10.3390/ma12213534.

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In the present study, the gas tungsten arc welding wire feed additive manufacturing process is simulated and its final microstructure predicted by microstructural modelling, which is validated by microstructural characterization. The Finite Element Method is used to solve the temperature field and microstructural evolution during a gas tungsten arc welding wire feed additive manufacturing process. The microstructure of titanium alloy Ti-6Al-4V is computed based on the temperature evolution in a density-based approach and coupled to a model that predicts the thickness of the α lath morphology.

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Meng, Yi, Hui Min Zhou, Jia Lin Gan, and Sumio Sugiyama. "Microstructural Evolution of SKD11 Tool Steel during Multi-Stage Thixoforming and Subsequent Heat Treatments." Solid State Phenomena 285 (January 2019): 45–50. http://dx.doi.org/10.4028/www.scientific.net/ssp.285.45.

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The application of semisolid forming (SSF) is inhibited significantly by the inhomogeneous distributions of microstructure and mechanical properties in the products manufactured by SSF. Beside of forming parameters including forming temperature, isothermal holding time, and forming speed, post heat treatments of SSF is one of the most important facts affecting the microstructure and mechanical properties of the SSF-manufactured products. In this study, heat treatments including annealing, quenching, and tempering different experimental conditions were conducted on the SKD11 tool steel samples

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Zhang, Xinyu, Chuanwei Li, and Jianfeng Gu. "The Effect of Al Loss on the Microstructural Formation of TiAl Alloys Produced via Direct Laser Deposition." Metals 15, no. 4 (2025): 391. https://doi.org/10.3390/met15040391.

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Additive manufacturing is becoming a popular and effective process for lightweight high-temperature TiAl alloys, but there is a lack of understanding regarding the corresponding microstructural formation mechanisms. In this study, various Ti-47Al-2Cr-2Nb alloys were additively manufactured with different laser power values, and the related microstructures were carefully characterized. The results show that a convoluted microstructure, a nearly full α2/γ lamellar structure, and an α2/β Widmanstatten structure were obtained as the laser power was increased. Moreover, the Al content of the as-dep

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Ito, Tsutomu, and Takashi Mizuguchi. "Superplastic Elongation through Deformation Mechanism Transition during High-Temperature Deformation in Thermally Unstable Fine-Grained Aluminum Solid Solution Alloy." Key Engineering Materials 723 (December 2016): 21–26. http://dx.doi.org/10.4028/www.scientific.net/kem.723.21.

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In this study, the superplastic behavior on a fine-grained aluminum solid solution alloy consisting of thermally unstable microstructures was investigated. In order to obtain the fine-grained microstructure, friction stir processing (FSP) was applied to a commercial 5083 aluminum alloy. An equiaxial fine-grained microstructure of 7.8 mm was obtained after FSP, but this microstructure was thermally unstable at high temperatures. Commonly, for fine-grained superplasticity to occur (or to continue grain boundary sliding (GBS)), it is necessary to keep the fine-grained microstructure to less than

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Kurniawan, Eko, Junaidi Syarif, Zainuddin Sajuri, and Mohammad Rasidi Rasani. "Microstructural Change of a Ti-10at%Mo-10at%Cr Alloy on Sintering Process." Applied Mechanics and Materials 663 (October 2014): 266–70. http://dx.doi.org/10.4028/www.scientific.net/amm.663.266.

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Titanium and its alloys have been widely used in automotive industry due to their high specific strength, excellent corrosion resistance, high temperature capability and low density. In this study, the microstructural changes of Ti-10at%Mo-10at%Cr alloy on sintering process was observed to clarify alloying behavior. The sample was fabricated using powder metallurgy process with two main operations on sintering process, ie sintering in a vacuum condition at temperatures of 1573K and furnace cooling with. Microstructures were observed by optical microscopy and scanning electron microscopy (SEM).

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Liu, Lishuai, Peng Wu, Yanxun Xiang, and Fu-Zhen Xuan. "Autonomous characterization of grain size distribution using nonlinear Lamb waves based on deep learning." Journal of the Acoustical Society of America 152, no. 3 (2022): 1913–21. http://dx.doi.org/10.1121/10.0014289.

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Characterization of grain microstructures of metallic materials is crucial to materials science and engineering applications. Unfortunately, the universal electron microscopic methodologies can only capture two-dimensional local observations of the microstructures in a time-consuming destructive way. In this regard, the nonlinear ultrasonic technique shows the potential for efficient and nondestructive microstructure characterization due to its high sensitivity to microstructural features of materials, but is hindered by the ill-posed inverse problem for multiparameter estimation induced by th

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Zeinali, Seyed Morteza, and Sherif L. Abdelaziz. "Identifying thermo-mechanical induced microstructural changes." E3S Web of Conferences 205 (2020): 09005. http://dx.doi.org/10.1051/e3sconf/202020509005.

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Robust engineering of geomaterials for energy applications requires a clear understanding of the impacts of temperatures and pressures applied to the soil on their microstructures. Such understandings will facilitate better designs of new geomaterials and technologies via ensuring accurate assessments of the performance of the existing ones. In this study, we assess the changes in the microstructure—specific surface area and pore size distribution—of a saturated clay subjected to stress and temperature cycle. Clay specimens were subjected to the desired mechanical stresses and thermal cycles i

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Weng, Yung-Jin, Yu-Zhe Gao, and Yu-Ming Chen. "Development of Replica Molding Processes for Hypervariable Microstructural Components." Processes 12, no. 9 (2024): 1968. http://dx.doi.org/10.3390/pr12091968.

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The current study investigates the development of a replica molding process for hypervariable microstructures. Initially, the mold deformation theory for these hypervariable microstructures was derived. Based on this theory, a metal material with magnetic properties was selected as the structural material to create a negative Poisson’s ratio (NPR) geometric structure. The experimental results, obtained by fabricating the NPR geometric mold layer with a metal material with adjustable magnetic properties and controlling microstructure deformation indirectly, validate the deformation theory and i

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Amuda, M. O. H., and S. Mridha. "Effect of Energy Input on Microstructure and Hardness of TIG Welded AISI 430-Ferritic Stainless Steel." Advanced Materials Research 264-265 (June 2011): 390–96. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.390.

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Studies on the weldability of ferritic stainless steel grades suggests that low heat input rate and better heat transfer dynamics are appropriate for the control of grain size and microstructural feature in thin sections. However, the optimal welding conditions to achieve combination of such characteristics are yet to be established. In the present investigation, AISI 430 ferritic stainless steel is TIG welded using energy input between 0.205 and 2.05kj/mm and characterized in terms of microstructure and hardness. The microstructural characterization of the welds with varying heat input rates

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Schmoelzer, Thomas, Klaus Dieter Liss, Svea Mayer, et al. "Hot Deformation of Cast and Extruded TiAl: An In Situ Diffraction Study." Materials Science Forum 706-709 (January 2012): 1725–30. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.1725.

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Intermetallic TiAl alloys are a class of innovative high-temperature materials which are developed to replace the substantially denser Ni-base alloys in low-pressure turbine blades of jet engines. By streamlining the production process of these parts, a substantial decrease in production costs can be achieved. To this end, a profound knowledge of the microstructural processes occurring during hot deformation is a prerequisite. To investigate the microstructural development during forming operations, cast and extruded as well as only cast specimens were hot-deformed and the microstructural deve

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Alotaibi, Abdulmajeed, Mostafa Alqarras, Anna Podlasek, et al. "White Matter Microstructural Alterations in Type 2 Diabetes: A Combined UK Biobank Study of Diffusion Tensor Imaging and Neurite Orientation Dispersion and Density Imaging." Medicina 61, no. 3 (2025): 455. https://doi.org/10.3390/medicina61030455.

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Background and objectives: Type 2 diabetes mellitus (T2DM) affects brain white matter microstructure. While diffusion tensor imaging (DTI) has been used to study white matter abnormalities in T2DM, it lacks specificity for complex white matter tracts. Neurite orientation dispersion and density imaging (NODDI) offers a more specific approach to characterising white matter microstructures. This study aims to explore white matter alterations in T2DM using both DTI and NODDI and assess their association with disease duration and glycaemic control, as indicated by HbA1c levels. Methods and Material

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Loc, Nguyen The, Goroh Itoh, Yi Yi, Yoshinobu Motohashi, and Takaaki Sakuma. "Microstructural Control of a Zn-Al Eutectoid Alloy by Hot-Rolling." Advanced Materials Research 409 (November 2011): 77–80. http://dx.doi.org/10.4028/www.scientific.net/amr.409.77.

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The Zn-Al eutectoid alloy has been well known as a typical superplastic metallic material with small grain sizes. In the present study, controlling conditions in hot rolling such as temperature, total number of passes, reduction in a pass, etc. have been investigated in a ZnAl eutectoid alloy to obtain finegrained microstructures. Homogenized ingot specimens were hotrolled by a total rolling reduction of 90% with different pass schedule. Microstructural observation on the final sheet showed that nearly equiaxed finegrained microstructure with grain size of about 2µm was formed when the ingot w

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Chakma, Prajjayini, and Yunhua Luo. "Impact of Regular and Irregular Pore Distributions on the Elasticity of Porous Materials: A Microstructure-Free Finite Element Study." Materials 17, no. 18 (2024): 4490. http://dx.doi.org/10.3390/ma17184490.

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Conventional analytical formulas for predicting the effective Young’s modulus of porous materials often rely on simplifying assumptions and do not explicitly incorporate microstructural information. This study investigates the impact of regular versus irregular pore distributions on the stiffness of porous materials using microstructure-free finite element modeling (MF-FEM). After conducting a convergence study, MF-FEM predictions were validated against experimental data and used to assess the accuracy of commonly employed analytical models. The results demonstrate that materials with irregula

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Dong, Qin, Zhong Wei Yin, Hu Lin Li, Yang Mao, and Geng Yuan Gao. "3D Reconstruction of Microstructure for Centrifugal Casting Babbitt Lining of Bimetallic Bearing Based on Mimics." Key Engineering Materials 841 (May 2020): 94–98. http://dx.doi.org/10.4028/www.scientific.net/kem.841.94.

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Babbitt alloys are the most commonly used bearing materials for low speed diesel engines due to their excellent attributes. An understanding of microstructures in these alloys is important, especially quantifying microstructure in 3D. In this study, we used serial sectioning technique to reconstruct 3D microstructure of tin-based Babbitt lining of bimetallic bearing made by centrifugal casting based on medical software Mimics. The morphologies and volume fraction of hard phase particles and α-Sn matrix were obtained. The volume fraction of the reconstructed microstructures was verified by the

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Oblitas, Jimy, Jezreel Mejia, Miguel De-la-Torre, et al. "Classification of the Microstructural Elements of the Vegetal Tissue of the Pumpkin (Cucurbita pepo L.) Using Convolutional Neural Networks." Applied Sciences 11, no. 4 (2021): 1581. http://dx.doi.org/10.3390/app11041581.

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Although knowledge of the microstructure of food of vegetal origin helps us to understand the behavior of food materials, the variability in the microstructural elements complicates this analysis. In this regard, the construction of learning models that represent the actual microstructures of the tissue is important to extract relevant information and advance in the comprehension of such behavior. Consequently, the objective of this research is to compare two machine learning techniques—Convolutional Neural Networks (CNN) and Radial Basis Neural Networks (RBNN)—when used to enhance its microst

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Yamane, Gen, Vincent Velay, Vanessa Vidal, and Hiroaki Matsumoto. "Mechanical Behavior of Ti-6Al-2Sn-4Zr-2Mo Titanium Alloy under Hot and Superplastic Forming Conditions: Experiment and Modeling." Defect and Diffusion Forum 385 (July 2018): 413–18. http://dx.doi.org/10.4028/www.scientific.net/ddf.385.413.

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Titanium alloys are widely used in the aircraft industry. Under sheets form, they can be employed to the manufacturing of pylon or engine parts. With the aim of a cost reduction, this study proposes to act on the starting microstructure so as to improve the mechanical properties during the forming stages. In the present study, investigations are focused on Ti-6Al-2Sn-4Zr-2Mo (Ti6242) alloy specially used for the hot areas (e.g. parts close to the engine or the combustion chambe...). Presently, an important mechanical test campaign was performed on Ti6242 alloy, it examines, on the one hand, th

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Várez, A., F. Garcı́a-Alvarado, E. Morán, and M. A. Alario-Franco. "Microstructural Study of La0.5Li0.5TiO3." Journal of Solid State Chemistry 118, no. 1 (1995): 78–83. http://dx.doi.org/10.1006/jssc.1995.1313.

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Beh, Chong You, Ee Meng Cheng, Xiao Jian Tan, et al. "Complex Impedance and Modulus Analysis on Porous and Non-Porous Scaffold Composites Due to Effect of Hydroxyapatite/Starch Proportion." Polymers 15, no. 2 (2023): 320. http://dx.doi.org/10.3390/polym15020320.

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This study aims to investigate the electric responses (complex modulus and complex impedance analysis) of hydroxyapatite/starch bone scaffold as a function of hydroxyapatite/starch proportion and the microstructural features. Hence, the non-porous and porous hydroxyapatite/starch composites were fabricated with various hydroxyapatite/starch proportions (70/30, 60/40, 50/50, 40/60, 30/70, 20/80, and 10/90 wt/wt%). Microstructural analysis of the porous hydroxyapatite/starch composites was carried out by using scanning electron microscopy. It shows that the formation of hierarchical porous micro

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