Article
Materials Science, Multidisciplinary
Jia Chen, Zhengyu Zhang, Eitan Hershkovitz, Jonathan Poplawsky, Raja Shekar Bhupal Dandu, Chang-Yu Hung, Wenbo Wang, Yi Yao, Lin Li, Hongliang Xin, Honggyu Kim, Wenjun Cai
Summary: In this study, the structural origin of the pH-dependent repassivation mechanisms in multi-principal element alloys (MPEA) was investigated using surface characterization and computational simulations. It was found that selective oxidation in acidic to neutral solutions leads to enhanced nickel enrichment on the surface, resulting in reduced repassivation capability and corrosion resistance.
Article
Chemistry, Physical
Guilherme Yuuki Koga, Nick Birbilis, Guilherme Zepon, Claudio Shyinti Kiminami, Walter Jose Botta, Michael Kaufman, Amy Clarke, Francisco Gil Coury
Summary: The study found that increasing the Cr content can improve the mechanical properties and corrosion resistance of Cr-Co-Ni alloys, especially in a simulated seawater environment, where the Cr-rich alloy performed exceptionally well.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
S. P. O'Brien, J. Christudasjustus, E. Delvecchio, N. Birbilis, R. K. Gupta
Summary: A multi-principal element alloy with equiatomic concentrations of Cr, Fe, Mn, and V was synthesized using arc melting. Characterization techniques including X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy confirmed the presence of a BCC matrix with a dispersion of a secondary phase in the CrFeMnV MPEA. Cyclic potentiodynamic polarization tests in 0.6 M NaCl demonstrated excellent corrosion resistance, surpassing that of stainless steel 304L, as indicated by the high breakdown and repassivation potentials. X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry provided insights into the formation of a multi-layer surface film under constant immersion and potentiostatic conditioning.
Article
Materials Science, Multidisciplinary
Angela Y. Gerard, Elizabeth J. Kautz, Daniel K. Schreiber, Junsoo Han, Stephen McDonnell, Kevin Ogle, Pin Lu, James E. Saal, Gerald S. Frankel, John R. Scully
Summary: The effect of Cr content on corrosion behavior in multi-principal element alloys (MPEAs) and binary solid solution alloys was investigated. Passivity and localized corrosion resistance were obtained in MPEA and binary alloys with Cr content above a certain threshold. Cr cation enrichment was observed in the passive films, and its fraction correlated with the passive current density. The degree of Cr enrichment was influenced by thermodynamic and kinetic factors.
Article
Materials Science, Multidisciplinary
S. Shuang, G. J. Lyu, D. Chung, X. Z. Wang, X. Gao, H. H. Mao, W. P. Li, Q. F. He, B. S. Guo, X. Y. Zhong, Y. J. Wang, Y. Yang
Summary: In this study, we developed a series of medium-entropy alloys (MEAs) with high strength, superior fracture toughness, and ultra-high corrosion resistance. Interestingly, our MEAs exhibit an unusual anti-corrosion behavior as their corrosion resistance increases with increasing acidity. This behavior can be attributed to the surface chemical complexity of our MEAs, which facilitates the formation of metastable medium entropy passive films.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
A. M. Panindre, H. O. Colijn, G. B. Viswanathan, X. Guo, C. D. Taylor, G. S. Frankel
Summary: A non-equimolar multi-principal element alloy with excellent corrosion resistance properties has been designed, and it shows outstanding resistance to both general and localized corrosion in highly aggressive environments, in both its single-phase and heat-treated multi-phase forms.
Article
Chemistry, Physical
G. L. Beausoleil Ii, M. E. Parry, K. Mondal, S. Kwon, L. R. Gomez-Hurtado, D. Kaoumi, J. A. Aguiar
Summary: MoNbTi, MoNbTiZr, CrMoNbTiZr, and MoNbTiVZr multi-principal element alloys were fabricated using spark plasma sintering (SPS). Cryogenic milling and SPS were employed to enhance radiation resistance and ultimate tensile strength. X-ray diffraction and scanning electron microscopy were used to characterize the alloys. The introduction of additional alloying elements led to increased phase complexity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Wenyu Chen, Rui Zhou, Wanpeng Li, Yen-Hsiang Chen, Tzu-Hsiu Chou, Xu Wang, Yong Liu, Yuntian Zhu, J. C. Huang
Summary: The corrosion behaviors of selective laser melted FeCoCrNi multi-principal element alloys with carbon or nitrogen addition in 0.5 M H2SO4 solution were investigated. Carbon and nitrogen additions refined the grains and introduced a heterogeneous structure, but had opposite effects on corrosion behavior. Doped carbon participated as nano-sized carbides and caused localized galvanic corrosion, while doped nitrogen formed CrN chemical clusters and resulted in a protective passive film with higher Cr2O3/Cr(OH)3 ratio.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zhidong Leong, Upadrasta Ramamurty, Teck Leong Tan
Summary: This study conducted a high-throughput first-principles investigation of the microstructures of MPEAs, uncovering the governing principles and presenting a quantitative expression for predicting solid solution formation. The results reproduced microstructural observations from experiments and provided predictions for unexplored regions, offering simple yet powerful design principles for future experiments to rationally design MPEAs.
Article
Materials Science, Multidisciplinary
Ricardo Henrique Buzolin, Tim Richter, Florian Pixner, Michael Rhode, Dirk Schroepfer, Norbert Enzinger
Summary: This study investigates the feasibility of electron beam welding in producing bead-on-plate welds of CrCoNi and CrMnFeCoNi medium and high entropy alloys. The alloys are welded in two different states, namely, as-cold-rolled and annealed conditions, with two different parameters. The FCC microstructure of the welds is examined, and the impact on the microstructure is discussed. The heat-affected zone is negligible in the annealed condition due to the absence of recrystallization and insufficient exposure time to high temperature for grain coarsening.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Elizabeth J. Kautz, Daniel K. Schreiber, Arun Devaraj, Bharat Gwalani
Summary: Multiple principal element alloys (MPEAs) have drawn significant interest for potentially replacing traditional alloys with tailored mechanical properties, corrosion resistance, and radiation tolerance enabled by complex compositions. They offer a wide alloy design space for discovering new forms of oxidation and corrosion resistance in extreme environments, challenging conventional alloy design criteria.
Article
Materials Science, Multidisciplinary
Xueying Wang, Dimitri Mercier, Yolaine Danard, Thomas Rieger, Loic Perriere, Mathilde Laurent-Brocq, Ivan Guillot, Vincent Maurice, Philippe Marcus
Summary: Extensive thermodynamic calculations were carried out to explore the vast composition space of the Cr-Fe-Co-Ni-Mo system, aiming to design and characterize multi-component single-phase fcc alloys with optimized Cr and Mo content and enhanced passivity.
Article
Chemistry, Physical
G. Y. Koga, D. Travessa, G. Zepon, D. D. Coimbrao, A. M. Jorge, J. E. Berger, V. Roche, J. -c. Lepretre, C. Bolfarini, C. S. Kiminami, F. Wang, S. L. Zhu, A. Inoue, W. J. Botta
Summary: FeCoNiCrMoB alloys produced by melt-spinning exhibit excellent corrosion resistance in chloride media, with the formation of a nanometric-thick film composed of Fe, Co, Ni, Cr, and Mo on the alloys' surface responsible for granting the corrosion resistance of all alloys. Excessive crystallization forming borides may compromise the corrosion resistance of the alloys, highlighting the importance of maintaining amorphous structures in enhancing corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Materials Science, Multidisciplinary
Francisco G. Coury, Guilherme Zepon, Claudemiro Bolfarini
Summary: Great research effort is being employed in the development of Multi-Principal Element Alloys (MPEAs), focusing on the vast compositional field they exist in. Among the promising MPEAs, compositions containing large contents of Cr, Co and Ni, like the Cr33Co33Ni33 alloy, show outstanding combination of strength and ductility. The critical review in this work examines the history of MPEA development, phase equilibria, and main studies explaining the good mechanical properties of these alloys, highlighting grain refinement, solid solution strengthening, twinning, and transformation induced plasticity. The review also emphasizes the excellent properties of high Cr-containing alloys in terms of strength, ductility, corrosion resistance, and oxidation resistance, surpassing some Ni-superalloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Ceramics
Weverson C. Batalha, Virginie Roche, Yannick Champion, Marc Mantel, Marc Verdier, Vincent Martin, Claudio S. Kiminami, Alberto M. Jorge Junior
Summary: The influence of devitrification on microstructure, corrosion, and mechanical properties of two new FeCrMoNbB and FeCrMoNiB pseudo-high entropy alloys has been investigated for coating applications. Amorphous ribbons were heat-treated to simulate crystallization. The Nb-PHE alloy's coating was nearly amorphous. Both compositions showed excellent corrosion resistance even at high temperatures, and no pitting corrosion was observed. These materials exhibit promising properties for coating applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Y. D. Wu, Y. H. Cai, X. H. Chen, T. Wang, J. J. Si, L. Wang, Y. D. Wang, X. D. Hui
MATERIALS & DESIGN
(2015)
Article
Nanoscience & Nanotechnology
Yidong Wu, Jiajia Si, Deye Lin, Tan Wang, William Yi Wang, Yandong Wang, ZiKui Liu, Xidong Hui
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Materials Science, Multidisciplinary
Y. D. Wu, Y. H. Cai, T. Wang, J. J. Si, J. Zhu, Y. D. Wang, X. D. Hui
Article
Engineering, Mechanical
Qinjia Wang, Yidong Wu, Jinbin Chen, Jinxia Song, Chengbo Xiao, Xidong Hui
Summary: This study demonstrates that B-induced improvement in low cycle fatigue (LCF) lifetime in single crystal superalloy turbine blades can be achieved by stabilising low angle grain boundaries (LAGB) through a delicate modulation of LAGB composition without using boride. The Binduced matrix softening featured by homogenous distribution of fatigue deform zones with high density of dislocations was also evidenced.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Nanoscience & Nanotechnology
Qinjia Wang, Yidong Wu, Jinbin Chen, Jinxia Song, Chengbo Xiao, Xidong Hui
Summary: The roles of minor elements in single crystal superalloys' fatigue properties have been overlooked, but our study found that carbon (C) and boron (B) significantly increased stress amplitude and reduced cyclic hysteresis energy under the condition of approximate low cycle fatigue (LCF) lifetime at 980 degrees C. The enhanced fatigue stress is believed to be associated with interstitial solid solution strengthening. The improved fatigue deformation resistance is attributed to the formation of slip bands and <010> superdislocations in C-containing alloys, while B additions led to denser dislocation-tangle at the gamma/gamma' interface and homogenization of overall dislocation distribution.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Yidong Wu, Qinjia Wang, Deye Lin, Xiaohua Chen, Tan Wang, William Yi Wang, Yandong Wang, Xidong Hui
FRONTIERS IN MATERIALS
(2020)
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)
