Article
Nanoscience & Nanotechnology
Tian Ye, Feng Zhao, Lianyang Chen, Kun Jiang, Qiong Deng, Yuzeng Chen, Qingyuan Wang, Tao Suo
Summary: TWIP steel shows high strain hardening capability and strength under extreme conditions, but significant ductility loss due to twin structure and its evolution, strain rate, and temperature. The interactions between twin systems and nanotwin structures accelerate crack nucleation and propagation along twin boundaries.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Tian Ye, Feng Zhao, Lianyang Chen, Ping Xia, Hua Fu, Qiong Deng, Qingyuan Wang, Tao Suo
Summary: The tensile deformation behavior and microstructure evolution of TWIP steel at room and cryogenic temperatures were studied. It was found that TWIP steel has excellent strength at cryogenic temperature due to the synergistic effect of dislocation slip and deformation twinning, but its ductility is significantly reduced.
Article
Materials Science, Multidisciplinary
Lingqiang Zhong, Zhigang Wang, Quanshun Luo, Weizhen Liu
Summary: The addition of cerium can reduce the stacking fault energy of TWIP steel, promote the formation of twinning, and improve the mechanical properties of the alloy. Adding 0.015wt% of cerium in TWIP steel can achieve the optimal mechanical properties, and cerium helps enhance the strain hardening ability of TWIP steel.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Zhengyi Tang, Chuanzhen Huang, Jiahui Niu, Guoyan Jiang, Binghao Li, Zhen Chen, Hanlian Liu
Summary: This paper investigates the stored energy during deformation under different deformation conditions, and analyzes the effects of strain, deformation temperature, and strain rate on the stored energy. The results show that the stored energy can describe the hardening effect during plastic deformation and can be used to predict the stress-strain relationship and hardening rate. Additionally, a convenient method for acquiring stored energy through hardness measurement is provided.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Chunhui Wang, Wang Cai, Chaoyang Sun, Xintong Li, Lingyun Qian, Jun Jiang
Summary: In this study, the mechanical behaviors and microstructural mechanisms of TWIP steel under different strain rates were investigated. The results showed that the strain rate significantly affects the material's performance and mechanisms. Dynamic loading induced a higher twin fraction and more intense twin boundary-dislocation interaction, resulting in enhanced strain hardening behavior. However, the strain hardening rate decreased in the later stage due to the decreasing growth rate of the twin boundary fraction. The fuzzy regions caused by high-density dislocations also hindered the elongation of the dynamic tensile specimen. The findings contribute to a better understanding of the strain and strain rate dependence of TWIP steels, which can improve the safety performance of automobiles.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Andrey Volokitin, Abdrakhman Naizabekov, Irina Volokitina, Sergey Lezhnev, Evgeniy Panin
Summary: The study shows that severe plastic deformation by the HPT method plays a favorable role in increasing the degree of grain refining of AISI-316 steel, which directly benefits the mechanical properties of the material.
Article
Nanoscience & Nanotechnology
Ting-Ting Chen, Jing Wang, Yi Zhang, Ping Jiang, Fu-Ping Yuan, Pei-De Han, Xiao-Lei Wu
Summary: Gradient structure (GS) design, with deformation twin-density as a gradient variable, is proposed to enhance the synergy between strength and ductility. Tensile tests show that the GS exhibits a significant increase in yield strength while maintaining comparable ductility. The presence of mechanical hysteresis loops and the interaction between deformation twins and dislocations contribute to the improved mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Javier Escobar, Jose Luis Jimenez, Alfredo Artigas, Juan Perez-Ipina, Alberto Monsalve
Summary: The kinetics of carbide precipitation in a Fe-22Mn-0.45C TWIP steel were studied under different cold-deformation levels and annealing temperatures. Manganese carbides were found to precipitate between 525 and 650 degrees C, with an increase in volume fraction due to cold-deformation and a decrease with higher annealing temperatures. The size of the carbides increased with both cold-deformation and annealing temperatures, but exhibited a notable reduction at 650 degrees C.
Article
Mechanics
Min Xu, Bingbing An, Dongsheng Zhang
Summary: This study analyzes the fracture process of mineralized collagen fibril arrays under tensile loading. It finds that the fracture mechanisms of MCF arrays depend on the post-yield characteristics of MCFs. The toughness of MCF arrays is mainly attributed to the plastic energy dissipation of MCFs and the extrafibrillar matrix.
INTERNATIONAL JOURNAL OF APPLIED MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Omar El Batal, Wael Abuzaid, Mehmet Egilmez, Maen Alkhader, Luca Patriarca, Riccardo Casati
Summary: High-entropy alloys and medium-entropy alloys, also known as multi-principal element alloys, offer the opportunity to develop new materials with outstanding mechanical properties. By careful selection of elements and thermal processing, these alloys exhibit superior strength and ductility levels at different temperatures through various deformation mechanisms. The strain rate and temperature have significant effects on the plasticity of these alloys.
Article
Geochemistry & Geophysics
E. Rybacki, L. Niu, B. Evans
Summary: Semi-brittle flow, a common phenomenon in the mid-levels of the Earth's crust, was studied through conventional triaxial deformation experiments on dry Carrara marble samples. The study found that stress and hardening coefficient of marble increase with decreasing temperature and increasing confining pressure. The mechanical behavior of marble is similar to high-strength, high-ductility metals deforming through processes such as twinning induced plasticity.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Chemistry, Physical
Nikolay Zolotorevsky, Elina Ushanova, Irina Brodova, Anastasia Petrova, Natalia Ermakova
Summary: The study on aluminum subjected to high-rate shear deformation via DCAP reveals the evolution from deformation twinning to grain refinement. After 4 DCAP passes, strengthening is mainly provided by dislocation substructure, while the contribution of high-angle boundaries to the strengthening remains low.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Mechanical
Daniel Gren, Knut Andreas Meyer
Summary: Rolling contact loading can cause plastic deformation and fatigue cracks. Current rail standards do not consider the effect of plasticity on mechanical behavior. This study proposes a new method for evaluating the fatigue life of deformed material and finds that superimposed compressive axial loads can increase fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Bo Li, Deng Pan, Xin Zhang, Lei Liu, Lina Gao, Shaolong Li, Yuanbin Qin, Yabo Fu, Shufeng Li
Summary: This paper investigates the role of nano-TiB whiskers in the micromechanical behaviors of two common titanium composite particles (TCPs). The experimental results reveal that when the particle size decreases, the flow stress and contact yield stress of the TCPs exceed the yield strength of bulk composite pillars. The study also demonstrates a remarkable pinning capacity induced by the nano-TiBw network.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Metallurgy & Metallurgical Engineering
Sangeun Park, Saif Haider Kayani, Eun Hye Park, Jung Gi Kim, Sangshik Kim, Hyokyung Sung, Jae Bok Seol
Summary: J-integral fracture toughness tests were conducted on welded high-Mn steels at room and cryogenic temperatures. The results showed that the weld metal and heat-affected zone exhibited different toughness behavior due to their microstructure and stacking fault energies.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Engineering, Manufacturing
Taekyeong Kim, Jung Gi Kim, Sangeun Park, Hyoung Seop Kim, Namhun Kim, Hyunjong Ha, Seung-Kyum Choi, Conrad Tucker, Hyokyung Sung, Im Doo Jung
Summary: By optimizing conditional generative adversarial networks, virtual surface morphology can be generated with the use of artificial intelligence, helping to obtain high-quality parts cost-effectively.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Materials Science, Multidisciplinary
Hyung Keun Park, Yongju Kim, Jeong Min Park, Kei Ameyama, Hyoung Seop Kim
Summary: A harmonic structured material (HSM) with coarse-grained core and fine-grained shell microstructure was designed using a numerical model to simulate the deformation behavior of heterostructured materials. The model considered the pile-up of geometrically necessary dislocations (GNDs) near grain boundaries to implement the hetero-deformation induced (HDI) strengthening feature. The finite element analysis supported the experimental results and described the strain partitioning near the core-shell boundaries in the HSM. The optimal harmonic microstructure was investigated using machine learning (ML), and the correlation between microstructures and mechanical properties was established through Bayesian inference. A new HSM, predicted to have the best combination of strength and ductility, was successfully manufactured and exhibited superior mechanical performance compared to previous designs.
Article
Materials Science, Multidisciplinary
Gang Hee Gu, Yongju Kim, Min Hong Seo, Hyoung Seop Kim
Summary: Plastic strain ratio, a material property that estimates the mechanical anisotropy and drawability of metal sheets, is needed even in large deformation regimes.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Soung Yeoul Ahn, Sang Guk Jeong, Eun Seong Kim, Suk Hoon Kang, Jungho Choe, Joo Young Ryu, Dae Woon Choi, Jin Seok Lee, Jung-Wook Cho, Takayoshi Nakano, Hyoung Seop Kim
Summary: Interest in recycling Zircaloy-4 scrap has grown recently due to its high melting temperature and powder reactivity challenges for metal additive manufacturing (MAM). This study successfully built Zircaloy-4 parts using laser powder bed fusion MAM for the first time while suppressing powder reactivity. The mechanical properties of the printed Zircaloy-4 were evaluated at room temperature and reactor operating temperature, showing remarkable yield strengths at both temperatures. This study serves as a starting point for safe Zircaloy-4 additive manufacturing.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Medicine, General & Internal
Dougho Park, Mun-Chul Kim, Daeyoung Hong, Yong-Suk Jeong, Hyoung Seop Kim, Jong Hun Kim
Summary: This study aimed to explore the long-term risk of recurrence and mortality in patients with acute ischemic stroke (AIS), acute myocardial infarction (AMI), or acute hemorrhagic stroke (AHS). The results showed that the risk of developing secondary AIS was significantly lower in the AMI and AHS groups compared to the AIS group. The risk of developing secondary AMI was also significantly lower in the AMI and AHS groups compared to the AIS group. Initial AHS was a decisive risk factor for developing secondary AHS. Furthermore, AMI and AHS were more closely related to long-term mortality than AIS.
JOURNAL OF CLINICAL MEDICINE
(2023)
Article
Materials Science, Multidisciplinary
Jihye Kwon, Olivier Bouaziz, Hyoung Seop Kim, Yuri Estrin
Summary: Crumpled metallic thin foils have great potential as weight-saving and energy-absorption materials, but further research is needed on their crumpling process and mechanical behavior, considering their complex internal structures. This study presents two possible computational strategies for simulating crumpled materials under closed-die compression. The analysis shows that the continuum-based approach is more suitable for representing the macroscopic mechanical behavior of crumpled materials within a certain range of relative densities. The porous continuum approach also offers the benefits of low computational cost and high efficacy. However, the direct method is preferable when accurately reproducing internal structural pattern changes is necessary, such as for predicting mechanical response under complex loading conditions.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jae Heung Lee, Hyeonseok Kwon, Praveen Sathiyamoorthi, Sujung Son, Hyoung Seop Kim
Summary: To enhance the tensile properties of Al0.3CoCrNi (at%) medium-entropy alloys at room temperature, high-pressure torsion (HPT) and appropriate annealing are employed. Severe deformation induced by HPT leads to the formation of fine-grained structure and nanometer-scale B2 and sigma precipitates, which result in a synergistic combination of high yield strength (>1.0 GPa) and large uniform elongation (>25%) by utilizing grain refinement and precipitation strengthening simultaneously.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
Ji-Hyun Kim, Jin-Hwan Lim, Won-Tae Lee, Jung Gi Kim, Jeong Seok Oh, Taekyung Lee, Shuanglei Li, Tae-hyun Nam
Summary: In this study, aging conditions were used to improve the superelasticity of (Ni,Cu)-rich Ti-(38+x)Ni-12Cu alloy sheets. Precipitation hardening was found to enhance the superelasticity with small stress hysteresis. The microstructures and mechanical properties of the specimens were influenced by the Ni content and solution treatment temperature. The presence of Ti(Ni,Cu)2 particles led to higher fracture strain and hardness values in certain alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
D. H. Chung, J. Lee, Q. F. He, Y. K. Kim, K. R. Lim, H. S. Kim, Y. Yang, Y. S. Na
Summary: The study investigates the toughening/strengthening mechanisms of heterostructured eutectic high-entropy alloys (EHEAs) and discovers that fully eutectic HEAs show superior performance in both yield stress and fracture toughness due to the high hetero-deformation-induced (HDI) strengthening/toughening associated with a high misorientation angle at the grain/phase boundaries.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jungwan Lee, Olivier Bouaziz, Yuri Estrin, Hyoung Seop Kim
Summary: A physically based model is used to study the strain-hardening behavior of a metastable medium-entropy alloy Fe-61(CoNi)(29)Cr-10, which is controlled by a deformation-induced martensitic transformation. The model accurately predicts the stress-strain curves and shows the variation of phase composition with strain due to the phase transformation.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
M. Farvizi, M. Bahamirian, A. Faraji, H. S. Kim
Summary: By adding YSZ microparticles with a similar thermal expansion coefficient to NiTi alloy as reinforcement, the wear resistance and mismatch stress in the matrix can be improved. The use of YSZ instead of monoclinic zirconia as reinforcement reduces mismatch stress and increases the fraction of austenitic phase, leading to better shape memory and wear resistance properties.
Article
Materials Science, Multidisciplinary
Hyojin Park, Jungwan Lee, Rae Eon Kim, Sujung Son, Soung Yeoul Ahn, Hyoung Seop Kim
Summary: This study investigates the impact of warm rolling on the microstructure and tensile properties of Fe60(CoNi)30Cr10 Fe-based medium entropy alloy (Fe-MEA). The results show that the warm-rolled sample has coarse elongated grains, deformation-induced martensite, and a high density of dislocations. Tensile tests demonstrate that the warm-rolled Fe-MEA exhibits enhanced strength and a similar level of elongation compared to the annealed sample. The study suggests that warm rolling shows potential as a processing technique to improve the mechanical properties of Fe-MEA for broader applications.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Hamed Shahmir, Shabnam Kazemi, Mohammad Sajad Mehranpour, Hyoung Seop Kim
Summary: The effect of Al addition on the microstructure of a CoCrFeNiMn high-entropy alloy was investigated using a novel approach. The formation and stability of phases were examined through heat treatment and CALPHAD predictions. This method is significant for alloy design as it allows for a quick study of phase evolution in complex multi-component alloys.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Jeong Min Park, Hyeonseok Kwon, Jungho Choe, Kyung Tae Kim, Ji-Hun Yu, Yoon-Uk Heo, Hyoung Seop Kim
Summary: This study presents a guideline for alloy design in additive manufacturing, aiming to produce high-quality products with excellent mechanical performance by utilizing the unique segregation engineering of LPBF-driven microstructures. Mo-doping enhances the strength and ductility of ferrous medium-entropy alloys.
SCRIPTA MATERIALIA
(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)
