Article
Engineering, Mechanical
Arnaud Junet, Alexandre Messager, Arnaud Weck, Yves Nadot, Xavier Boulnat, Jean-Yves Buffiere
Summary: Fatigue specimens of a Ti-6Al-4V alloy containing internal artificial defects were studied. The growth of internal fatigue cracks was monitored in situ by synchrotron X-ray tomography during fatigue tests. Ex situ fatigue tests were also performed on samples with heat treatment or defects exposed to air. The results indicate that internal fatigue cracks grow from the notch in a vacuum environment and exhibit specific fracture surface regions.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
Fumiyoshi Yoshinaka, Takashi Nakamura, Hiroyuki Oguma, Nao Fujimura, Akihisa Takeuchi, Masayuki Uesugi, Kentaro Uesugi
Summary: The initiation of internal fatigue cracks in very high cycle fatigue of Ti-6Al-4V alloy was investigated using synchrotron radiation X-ray computed tomography (SR-CT). Micro-CT detected 28 cracks that were distributed across the examined volume of CYRILLIC CAPITAL LETTER EF1.8 x L 2.5 mm. No apparent correlation was observed between the spatial distribution, initial lengths, and initiation lives of cracks. The crack growth rate of the facet-sized crack varied widely; some cracks propagated rapidly, whereas no crack growth was observed for other cracks over a specific period of time after detection. Using nano-CT, the several grain-sized internal cracks and their microstructures were clearly and nondestructively visualized. In the field of view, many primary alpha phases were detected; however, no other cracks were observed. The multiple facet initiation site, which is commonly observed for titanium alloys, might not be due to the concurrently initiated facets but may be caused by the small crack growth accompanied by facet formation.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Zhenbin Zha, Feng Xu, Yongcun Li, Yu Xiao, Xiaofang Hu
Summary: The study used high-resolution synchrotron radiation X-ray computed tomography technology to investigate the deformation and fracture evolution of the internal microstructure of the Strombus gigas shell. Important crack initiation and propagation phenomena were observed, leading to the proposal of a strengthening and toughening regulation mechanisms for lightweight composites design.
MATERIALS & DESIGN
(2021)
Article
Nanoscience & Nanotechnology
Michael Musi, Benjamin Galy, Jean-Philippe Monchoux, Alain Couret, Helmut Clemens, Svea Mayer
Summary: Electromagnetic-assisted sintering offers time-efficient densification for intermetallic gamma-TiAl based powders, with controlled microstructure and mechanical properties through imposed temperature profiles. This study presents insights into phase evolution during the process using high-energy X-ray diffraction, highlighting the transferability of data to spark plasma sintering technology. The experiment provides time-resolved observations of non-equilibrium and equilibrium phase transformations, showcasing the potential for electromagnetic-assisted sintering in powder consolidation processes.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Jiang Wu, Xuguang An, Jing Zhang, Shaofeng Lei, Yi Guo, Xiwei Xu, Weitang Yao, Qingyuan Wang, Qingquan Kong
Summary: Ti-24Nb-4Zr-3Mn alloys were prepared using mechanical alloying and spark plasma sintering. The study found that increasing the milling time reduces the particle size of the alloy powder, but increases the oxygen content. Among all the investigated alloys, Ti-24Nb-4Zr-3Mn alloy prepared by 20-hour milling showed excellent comprehensive mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Gaku Okuma, Masaya Endo, Haruki Minagawa, Ryo Inoue, Hideki Kakisawa, Takuma Kohata, Toshio Osada, Takafumi Yamamoto, Masaki Azuma, Akihisa Takeuchi, Masayuki Uesugi, Olivier Guillon, Fumihiro Wakai
Summary: The evolution of morphologies of pores and defects during spark plasma sintering (SPS) of alumina granules at 1300 degrees C is studied using synchrotron X-ray multiscale tomography. Crack-like defects and branched rodlike defects are almost eliminated by SPS at stresses higher than 30 and 50 MPa, respectively. However, small ellipsoidal porous regions cannot be removed even at a pressure of 50 MPa.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
L. M. Kang, Y. J. Cai, X. C. Luo, Z. J. Li, X. B. Liu, Z. Wang, Y. Y. Li, C. Yang
Summary: The study introduces a new methodology for preparing high-performance metallic alloys, and successfully demonstrates the exceptional mechanical properties of the Ti-6Al-4V alloy.
SCRIPTA MATERIALIA
(2021)
Article
Engineering, Mechanical
Nathalie Limodin, Nora Dahdah, Long Wang, Ahmed El Bartali, Jean-Francois Witz, Jean-Yves Buffiere, Eric Charkaluk
Summary: 3D tomographic images of a cast AlSi7Cu3Mg alloy were obtained through synchrotron X-ray tomography during in-situ Low Cycle Fatigue tests at 250 degrees C. The analysis of the images revealed the role of eutectic Si particles near pores in damage mechanisms, while high resolution digital volume correlation showed the relationship between strain heterogeneity at the microstructural scale and failure or cracks of hard particles. By monitoring strain evolution within hard particles, such as eutectic Si and Fe or Cu intermetallics, their local failure strains could be measured and a hierarchy of deformation to failure could be drawn. A local Manson-Coffin curve per hard phase was proposed.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Materials Science, Multidisciplinary
Ce Xiao, Jean-Yves Buffiere, Jean Michel Letang, Wolfgang Ludwig
Summary: The higher lateral coherence length of beams at high brilliance synchrotron sources can improve crack detectability in Synchrotron Radiation Computed Tomography (SRCT) images, but non-planar cracks may lead to strong artifacts, making quantitative crack analysis difficult. Investigation through phase contrast tomography simulations showed that these artifacts come from Fresnel interference patterns on the detector, which can be minimized by reducing phase contrast intensity or inclining cracks with respect to the beam trajectory plane.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Qing Tan, Zhiran Yan, Runguang Li, Yang Ren, Yandong Wang, Baptiste Gault, Stoichko Antonov
Summary: This study investigates the deformation behavior of hydrogen-charged commercially pure titanium using in-situ high energy X-ray diffraction. The results reveal that the peak broadening in the diffusion patterns is caused by high internal and interphase stresses generated within and around the hydrides due to volume expansion caused by phase transformation. The hydrides exhibit high strength but brittle secondary phase behavior and sustain larger strains than the matrix. This study provides valuable insights into hydride deformation behavior and hydrogen embrittlement in titanium and zirconium.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Anna Veverkova, Jiri Kozlik, Kristina Bartha, Tereza Kosutova, Cinthia Antunes Correa, Hanka Becker, Tomas Chraska, Milos Janecek, Josef Strasky
Summary: A combination of cryogenic milling and spark plasma sintering can produce an ultrafine-grained two-phase microstructure.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
M. Suarez, D. Fernandez-Gonzalez, L. A. Diaz, F. Diologent, L. F. Verdeja, A. Fernandez
Summary: The study successfully sintered ZrCu39.85Y2.37Al1.8 metallic glass using SPS technology, achieving almost 100% relative density and excellent mechanical properties at 390 degrees C. Sintering at temperatures higher than 390 degrees C resulted in sample crystallization, but the metallic glass shows promise for applications in the jewelry industry.
Article
Materials Science, Multidisciplinary
Andi Idhil Ismail, Moukrane Dehmas, Elisabeth Aeby-Gautier, Benoit Appolaire
Summary: The phase transformation kinetics of Ti-6Al-4V alloy were investigated during rapid heating, and the study showed that the heating rate had an influence on the phase transformation behavior. Higher heating rates resulted in a higher dissolution temperature range for the α phase and a narrower temperature range for the phase transformation. The stress level and/or chemical heterogeneity in the β phase decreased with time at high temperatures. Despite the high heating rate, the dissolution kinetics of the α phase were still diffusion-controlled.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Zhichun Zhou, Binbin Jiang, Jianke Qiu, Linglei Zhang, Jiafeng Lei, Rui Yang, Kui Du
Summary: This study investigates the mechanism of crack formation in titanium alloys with lamellar microstructure under low-cycle dwell fatigue. The accumulation of residual dislocations and local tensile stress at the α/β interfaces are found to be the key factors leading to the formation of dwell fatigue cracks.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
X. Liu, L. Song, A. Stark, F. Pyczak, T. B. Zhang
Summary: In this study, the internal strain evolution and load partitioning between the α2 and γ phases at high temperatures in TiAl alloys are characterized using in-situ synchrotron high energy X-ray diffraction (HEXRD) technique for the first time. The γ phase exhibits plastic deformation at a stress of approximately 200 MPa, while the α2 phase exhibits plastic deformation at a stress of approximately 775 MPa. The internal strains in the α2 phase are almost fully relaxed during heating through substantial dislocation annihilation and rearrangement in the γ phase. These findings provide guidance for stress relief annealing of TiAl components.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Thermodynamics
L. Laiarinandrasana, T. F. Morgeneyer, Y. Cheng, L. Helfen, V Le Saux, Y. Marco
CONTINUUM MECHANICS AND THERMODYNAMICS
(2020)
Article
Thermodynamics
Sebastian Bornschlegel, Chris Conrad, Alexander Durst, Richard Welss, Michael Wensing, Margie Olbinado, Lukas Helfen, Tilo Baumbach
Summary: Flash boiling in gasoline direct injection engines can produce smaller droplets and reduce spray penetration depth, but also decrease the stability of fuel sprays and potentially cause spray contraction. Research shows that flash boiling leads to a significant radial expansion of the jet after nozzle exit, affecting the spray front velocity and penetration depth.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2021)
Article
Engineering, Multidisciplinary
Xinchen Ni, Reed Kopp, Estelle Kalfon-Cohen, Carolina Furtado, Jeonyoon Lee, Albertino Arteiro, Gregor Borstnar, Mark N. Mavrogordato, Lukas Helfen, Ian Sinclair, S. Mark Spearing, Pedro P. Camanho, Brian L. Wardle
Summary: In situ X-ray synchrotron radiation computed tomography (SRCT) was used to compare the damage effects of two mechanical enhancement technologies on carbon fiber composite laminates. The study found that nanostitching can improve the tensile strength and reduce delaminations, while thin-ply laminates inherently suppress matrix damage. The research provides insights for mechanical enhancement approaches and damage models.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Thomas Tancogne-Dejean, Christian C. Roth, Thilo F. Morgeneyer, Lukas Helfen, Dirk Mohr
Summary: This study investigates the fracture mechanism of aluminum alloy AA2024-T3 under shear loading using X-ray synchrotron laminography, revealing the microscale defects population and their evolution, and proposing a specific fracture mechanism based on these observations.
Article
Engineering, Mechanical
Thilo F. Morgeneyer, Mikhail Khadyko, Ante Buljac, Lukas Helfen, Hild Francois, Ahmed Benallal, Tore Borvik, Odd S. Hopperstad
Summary: Crystallographic aspects of heterogeneous plastic flow during ductile tearing are assessed experimentally by combining in situ synchrotron laminography imaging with numerical simulations using the crystal plasticity finite element method. The study reveals the early onset of slant strained bands which eventually lead to the formation of slant cracks. The simulation results show similar trends to the experimental observations, indicating the stability of the slant strained bands over the loading history.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Materials Science, Composites
J. Castro, F. Sket, L. Helfen, C. Gonzalez
Summary: The impregnation process during injection experiments in fibre-reinforced polymer composites was analyzed using the SR-CL method, revealing capillary forces dominate the flow front. Intratow and intertow voids were accurately segmented and their time and spatial distribution directly measured using machine learning algorithms.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Thermodynamics
Anastasiia Karabanova, Perizat Berdiyeva, Lukas Helfen, Alessandro Tengattini, Thomas Buecherl, Malgorzata G. Makowska, Stefano Deledda, Didier Blanchard
Summary: Thermochemical heat storage technology has the potential to balance intermittent renewables and increase energy system efficiency, but commercial products are limited and technology improvement is needed for larger market penetration. To advance this technology, particular attention must be paid to studying processes inside reactors and developing validated numerical models for optimization.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Materials Science, Multidisciplinary
Xiang Kong, Lukas Helfen, Mathias Hurst, Daniel Haenschke, Djamel Missoum-Benziane, Jacques Besson, Tilo Baumbach, Thilo F. Morgeneyer
Summary: This study investigates the behavior of an aluminum alloy sheet material during a load path change from shear to tension using three-dimensional X-ray imaging and image correlation. The results show significant effects of the load path change on the material's formability and damage mechanisms.
Article
Materials Science, Multidisciplinary
Elisa Cantergiani, Xavier Sauvage, Colin P. Scott, Arnaud Weck
Summary: A new process for obtaining high-strength interstitial free (IF) steel quickly was investigated, which involves coating thin sheets of IF steel with an amorphous FeC film and subjecting them to a two-step induction heating cycle. The resulting material has improved mechanical properties and a fine microstructure.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Instruments & Instrumentation
Tomas Farago, Sergey Gasilov, Iain Emslie, Marcus Zuber, Lukas Helfen, Matthias Vogelgesang, Tilo Baumbach
Summary: Tofu is a toolkit for processing large amounts of images and for tomographic reconstruction. It offers workflows for various image processing tasks and includes a wide range of pre-processing and post-processing algorithms. It is optimized for GPU workstations and provides graphical user interfaces and pre-configured workflows for users.
JOURNAL OF SYNCHROTRON RADIATION
(2022)
Article
Multidisciplinary Sciences
Josefin Martell, Carl Alwmark, Luke Daly, Stephen Hall, Sanna Alwmark, Robin Woracek, Johan Hektor, Lukas Helfen, Alessandro Tengattini, Martin Lee
Summary: This study explores the three-dimensional distribution of hydrous phases within the nakhlite meteorite and reveals that the alteration is localized and of short duration. This implies that habitable environments could not have been sustained on Mars during the Amazonian period.
Article
Multidisciplinary Sciences
Joey Disch, Luca Bohn, Susanne Koch, Michael Schulz, Yiyong Han, Alessandro Tengattini, Lukas Helfen, Matthias Breitwieser, Severin Vierrath
Summary: In this study, the authors use high-resolution neutron imaging to uncover the water distribution and salt precipitation issues in CO2 electrolyzers, which are major hurdles for their steady operation.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Robert Bradbury, Nikolay Kardjilov, Georg F. Dewald, Alessandro Tengattini, Lukas Helfen, Wolfgang G. Zeier, Ingo Manke
Summary: The elucidation of lithium ion transport pathways through a solid electrolyte separator is important for the development of all-solid-state batteries. Neutron imaging was performed on an all-solid-state lithium-sulfur battery using an increased Li-6 content in the anode. This allowed for differentiation between the mobile lithium ions diffusing through the cell and those initially located in the solid electrolyte, and demonstrated the lithium ion diffusion through the cell and the distribution of trapped lithium ions in charged and discharged states.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Mechanical
Arnaud Junet, Alexandre Messager, Arnaud Weck, Yves Nadot, Xavier Boulnat, Jean-Yves Buffiere
Summary: Fatigue specimens of a Ti-6Al-4V alloy containing internal artificial defects were studied. The growth of internal fatigue cracks was monitored in situ by synchrotron X-ray tomography during fatigue tests. Ex situ fatigue tests were also performed on samples with heat treatment or defects exposed to air. The results indicate that internal fatigue cracks grow from the notch in a vacuum environment and exhibit specific fracture surface regions.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Materials Science, Multidisciplinary
Ante Buljac, Xiang Kong, Lukas Helfen, Francois Hild, Thilo F. Morgeneyer
Summary: Damage and strain changes during shear dominated loading were studied using synchrotron laminography and digital volume correlation (DVC). The results showed localized strain fields and grain-related elongated cracks in the shear zone, with damage primarily concentrated in the gage section subjected to shear. The total Hencky von Mises strain close to failure was measured in the material bulk, reaching values between 0.6 and 0.7.
MECHANICS OF MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jie Zhang, Xiaoyang Chen, MingJian Ding, Jiaqiang Chen, Ping Yu
Summary: This study enhances the compositional inhomogeneity of relaxor ferroelectric thin films to improve their dielectric temperature stability. The prepared films exhibit a relatively high dielectric constant and a very low variation ratio of dielectric constant over a wide temperature range.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xiaoyu Chen, Ranran Zhang, Hao Zou, Ling Li, Qiancheng Zhu, Wenming Zhang
Summary: Polyaniline-manganese dioxide composites exhibit high conductivity, long discharge platform, and stable circulation, and the specific capacity is increased by providing additional H+ ions to participate in the reaction.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xutao Huang, Yinping Chen, Jianjun Wang, Gang Lu, Wenxin Wang, Zan Yao, Sixin Zhao, Yujie Liu, Qian Li
Summary: This study aims to establish a novel approach to better understand and predict the behavior of materials with multi-scale lamellar microstructures. High-resolution reconstruction and collaborative characterization methods are used to accurately represent the microstructure. The mechanical properties of pearlite are investigated using crystal plasticity simulation and in-situ scanning electron microscopy tensile testing. The results validate the reliability of the novel strategy.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Cheng Chen, Fanchao Meng, Jun Song
Summary: This study systematically investigated the unfaulting mechanism of single-layer interstitial dislocation loops in irradiated L12-Ni3Al. The unfaulting routes of the loops were uncovered and the symmetry breaking during the unfaulting processes was further elucidated. A continuum model was formulated to analyze the energetics of the loops and predict the unfaulting threshold.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Darshan Bamney, Laurent Capolungo
Summary: This work investigates the formation of adjoining twin pairs (ATPs) at grain boundaries (GBs) in hexagonal close-packed (hcp) metals, focusing on the co-nucleation (CN) of pairs of deformation twins. A continuum defect mechanics model is proposed to study the energetic feasibility of CN of ATPs resulting from GB dislocation dissociation. The model reveals that CN is preferred over the nucleation of a single twin variant for low misorientation angle GBs. Further analysis considering GB character and twin system alignment suggests that CN events could be responsible for ATP formation even at low m' values.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Bing Han, Zhengqian Fu, Guoxiang Zhao, Xuefeng Chen, Genshui Wang, Fangfang Xu
Summary: This study investigates the behavior of electric-field induced antiferroelectric to ferroelectric (AFE-FE) phase transition and reveals the evolution of atomic displacement ordering as the cause for the transition behavior changing from sharp to diffuse. The novel semi-ordered configuration results from the competing interaction between long-range displacement modulation and compositional inhomogeneity, which leads to a diffuse AFE-FE transition while maintaining the switching field.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Akib Jabed, Golden Kumar
Summary: This study demonstrates that cryogenic rejuvenation promotes homogeneous-like flow and increases ductility in metallic glass samples. Conversely, annealing has the opposite effect, resulting in a smoother fracture surface.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Xin Ji, Yan Chong, Satoshi Emura, Koichi Tsuchiya
Summary: A heterogeneous microstructure in Ti-15Mo-3Al alloy with heterogeneous distributions of Mo element and omega(iso) precipitates has achieved a four-fold increase in tensile ductility without a loss of tensile strength, by blocking the propagation of dislocation channels and preventing the formation of micro-cracks.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Amit Samanta, Prasanna Balaprakash, Sylvie Aubry, Brian K. Lin
Summary: This study proposes a combined large-scale first principles approach with machine learning and materials informatics to quickly explore the chemistry-composition space of advanced high strength steels (AHSS). The distribution of aluminum and manganese atoms in iron is systematically explored using first principles calculations to investigate low stacking fault energy configurations. The use of an automated machine learning tool, DeepHyper, speeds up the computational process. The study provides insights into the distribution of aluminum and manganese atoms in systems containing stacking faults and their effects on the equilibrium distribution.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Guowei Zhou, Yuanzhe Hu, Zizheng Cao, Myoung Gyu Lee, Dayong Li
Summary: In this work, a physics-constrained neural network is used to predict grain-level responses in FCC material by incorporating crystal plasticity theory. The key feature, shear strain rate of slip system, is identified based on crystal plasticity and incorporated into the loss function as physical constitutive equations. The introduction of physics constraints accelerates the convergence of the neural network model and improves prediction accuracy, especially for small-scale datasets. Transfer learning is performed to capture complex in-plane deformation of crystals with any initial orientations, including cyclic loading and arbitrary non-monotonic loading.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Pengfei Yang, Qichang Li, Zhongying Wang, Yuxiao Gao, Wei Jin, Weiping Xiao, Lei Wang, Fusheng Liu, Zexing Wu
Summary: In this study, the HER performance of Ru-based catalysts is significantly improved through the dual-doping strategy. The obtained catalyst exhibits excellent performance in alkaline freshwater and alkaline seawater, and can be stably operated in a self-assembled overall water splitting electrolyzer.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ilias Bikmukhametov, Garritt J. Tucker, Gregory B. Thompson
Summary: Depositing a Ni-1at. % P film can facilitate the formation of multiple quintuple twin junctions, resulting in a five-fold twin structure and a pentagonal pyramid surface topology. The ability to control material structures offers opportunities for creating novel surface topologies, which can be used as arrays of field emitters or textured surfaces.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Zening Yang, Weiwei Sun, Zhengyu Sun, Mutian Zhang, Jin Yu, Yubin Wen
Summary: Multicomponent oxides (MCOs) have wide applications and accurately predicting their thermal expansion remains challenging. This study introduces an innovative attention-based deep learning model, which achieves improved performance by using two self-attention modules and demonstrates adaptability and interpretability.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Ze Liu, Cai Chen, Yuanxun Zhou, Lanting Zhang, Hong Wang
Summary: This study attempts to address the gap in cooling rates between thin film deposition and bulk metallic glass (BMG) casting by correlating the glass-forming range (GFR) determined from combinatorial materials chips (CMCs) with the glass-forming ability (GFA) of BMG. The results show that the full-width at half maximum (FWHM) of the first sharp diffraction peak (FSDP) is a good indicator of BMG GFA, and strong positive correlations between FWHM and the critical casting diameter (Dmax) are observed in various BMG systems. Furthermore, the Pearson correlation coefficients suggest possible similarities in the GFA natures of certain BMG pairs.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Mike Schneider, Jean-Philippe Couzinie, Amin Shalabi, Farhad Ibrahimkhel, Alberto Ferrari, Fritz Koermann, Guillaume Laplanche
Summary: This work aims to predict the microstructure of recrystallized medium and high-entropy alloys, particularly the density and thickness of annealing twins. Through experiments and simulations, a database is provided for twin boundary engineering in alloy development. The results also support existing theories and empirical relationships.
SCRIPTA MATERIALIA
(2024)
