Article
Thermodynamics
I. A. Bajenova, E. V. Gvozdeva, A. V. Khvan, V. V. Cheverikin
Summary: In this study, the enthalpies of formation for intermetallic compounds between Tb, Ho, Er, and Co or Fe were determined experimentally, providing important data for the investigation of these compounds.
THERMOCHIMICA ACTA
(2023)
Review
Materials Science, Multidisciplinary
YuQiang Liu, Deshui Yu, Yan Zhang, JianPing Zhou, DaQian Sun, HongMei Li
Summary: This paper introduces the importance of magnesium alloys in automotive lightweight design and explains in detail the properties, applications, and several main welding methods of magnesium alloys. The advantages and disadvantages of various methods are discussed, and suggestions for improving welding quality are proposed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Kenji Iwase, Kazuhiro Mori
Summary: Y-Co intermetallic compounds and their hydrides were investigated for magnetic materials, where the existence of Y5Co19 was established in the phase diagrams. The crystal structure of Y5Co19 was determined to be Ce5Co19-type, with a hydrogen capacity of 0.63 H/M and two plateaus observed in the P-C isotherm. Two hydride phases, Y5Co19H3.8 and Y5Co19H14.9, were discovered with structural models similar to the original alloy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
X. W. Li, M. H. Yang, Y. Ruan, B. Wei
Summary: The growth mechanism and tensile performance of ternary Ni40.6Fe36.4Ti23 alloy were investigated using directional solidification technique. The research found that the solid/solid interfacial energy anisotropy contributed to the strong cooperation growth of the two phases in the ternary eutectic. The alloy solidified at 10 μm/s growth velocity showed the highest tensile strength and Young's modulus due to the reduction of transverse grain boundaries and grain refinement.
SCRIPTA MATERIALIA
(2024)
Article
Chemistry, Physical
Shovan Dan, Binita Mondal, Sudip Kumar Saha, Sudipta Mondal, R. Ranganathan, Manoranjan Kumar, Chandan Mazumdar
Summary: We report the formation and physical properties of a new polymorphic phase of NdIr3, along with those of one earlier reported phase, formed together during the synthesis process. The magnetic properties of these two phases are of contrasting characters: the former becomes ferromagnetic at low temperatures, while the latter remains paramagnetic down to the lowest measured temperature. Interestingly, the cubic AuBe5-type phase shows an uncanny similarity to the recently reported rhombohedral PuNi3-type phase of the same compound.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Metallurgy & Metallurgical Engineering
Yue Xing, Zheng Li, Huai Yu Hou, Ying Liu, Jing Tao Wang
Summary: Thanks to the development of quantum mechanics-based crystal structure prediction methods, numerous new compounds with low temperature thermodynamic stability have been predicted. This review summarizes the predictions of compounds that have not been experimentally reported to be stable at low temperatures and provides some experimental approaches that can be used for future synthesis.
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Mingkun Wang, Zongan Luo, Jinsong Yang, Guangming Xie, Zhaosong Liu
Summary: In this research, diffusion bonding experiments were conducted on titanium-steel clad plates to study the diffusion behavior of elements and the formation mechanism of compounds during the heating process. The results indicate that, at 850℃, the diffusion of C and Ti atoms mainly occurs in the contact region, forming weak combined zones. The crystal structure transformation influences the diffusion behavior of Fe, C, and Ti elements. Additionally, TiC exists in two forms in the interfacial reaction layers at 900℃: particles diffusely distributed in the FeTi layer and continuous or semi-continuous ribbons between FeTi and Fe2Ti. The formation of Ti-Fe compounds is predominant at higher temperatures.
Article
Materials Science, Multidisciplinary
Marzieh Ebrahimian, Mohammad Hossein Enayati, Fathallah Karimzadeh, YouJin Min, Dae-Eun Kim
Summary: Monolithic TiCo and Ti5Si3 phases and Co-(ss)/Ti5Si3-Ti3Co2 Si nanocomposite were successfully fabricated via mechanical alloying followed by hot-pressing. The samples showed a decrease in peak widths after hot-pressing, indicating an increase in crystal size, but retained their nano-crystallinity. Dry-sliding wear behavior showed that the material exhibited low wear rate and friction coefficient due to the presence of tribo-oxide and tribo-nitride layers on the worn surface.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Inorganic & Nuclear
Yu Cao, Zefeng Wei, Walid Al Maksoud, Rohit Rai, Yoji Kobayashi, Hiroshi Kageyama
Summary: This study explores the NH3 activity of Zr-based AB2-type intermetallic compounds without precious and rare earth metals. Dissociative hydrogen chemisorption and nitrogen storage occur on these compounds, forming stable catalysts.
SOLID STATE SCIENCES
(2023)
Article
Chemistry, Physical
Ahmad Ostovari Moghaddam, Dmitry Mikhailov, Rahele Fereidonnejad, Nataliya Shaburova, Denis Vinnik, Daniil Uchaev, Fu-Quan Bai, Dawid Janas, Evgeny Trofimov
Summary: High entropy intermetallic compounds (HEICs) are a new type of high entropy materials (HEMs) with the potential to exhibit unusual properties. Several HEICs were successfully fabricated using a melting technique, showing different crystal structures, microstructures, and mechanical properties. One HEIC achieved the highest microhardness value reported for an as-cast metallic HEM. These findings contribute to the expedited discovery of new single-phase HEICs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Takayuki Kojima, Yuki Nakaya, Hyungwon Ham, Satoshi Kameoka, Shinya Furukawa
Summary: Ternary intermetallic catalysts have received little attention due to challenges in synthesizing supported nanoparticles, but this study successfully synthesized SiO2 supported Co2FeGe Heuslar alloy nanoparticles with high catalytic performance for selective hydrogenation of propyne through nano-sizing.
Article
Chemistry, Physical
N. Ouafek, N. Keghouche, P. Beaunier, J. Belloni, M. Mostafavi
Summary: This study focuses on the antibacterial activity of Ni-Mg metallic nanomaterials and NiO-MgO composites against E. coli (G-) and S. aureus (G+) in relation to their size and structure. The structural analysis reveals the presence of nanoscaled Ni-Mg intermetallic phases in samples prepared by calcination or irradiation. These intermetallic phases exhibit significant antibacterial activity against both E. coli and S. aureus.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Matthias Smuda, Kati Finzel, Martin Hantusch, Jonas Stroeh, Nicole Pienack, Azat Khadiev, Huayna Terraschke, Michael Ruck, Thomas Doert
Summary: Intermetallic phases, including Bi2Ir nanoparticles, were synthesized via a polyol process, with the intermediate phase Bi4Ir2O forming and decomposing at specific temperatures. This study demonstrates a solution-based approach for obtaining intermetallic phases containing elements with different properties.
DALTON TRANSACTIONS
(2021)
Article
Materials Science, Multidisciplinary
Chenglu Hu, Xiong Zhou, Xinyue Zhang, Qi Zou, Dandan Li, Liang Ren, Yanchao Jiang, Tong Wang, Qichi Le
Summary: A Zn alloy coating with submicron phases was fabricated on magnesium alloys using a novel hot-dip process, resulting in excellent corrosion resistance. The presence of fine phases in the coating effectively prevented ion permeation in corrosive environments, leading to a significant enhancement in corrosion resistance.
Article
Chemistry, Physical
M. Cabibbo, A. Knaislova, P. Novak, F. Prusa, C. Paoletti
Summary: In this study, two TiAlSi intermetallic compounds produced by Spark Plasma Sintering with different Si content were tested for nanoindentation, toughness, and wear resistance. It was observed that an increase in Si content led to changes in microstructure, resulting in different mechanical responses in the two alloys.
Article
Chemistry, Physical
Liangjuan Gao, J. Robert Selman, Philip Nash
Summary: The dynamic contact angle of molten carbonate on porous Ni was measured, and the absorption process was studied under different conditions. The initial filling was found to be capillary-force controlled, while later stages were slowed down by viscous and inertial effects.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Chun Hu, Erhong Song, Maoyu Wang, Wei Chen, Fuqiang Huang, Zhenxing Feng, Jianjun Liu, Jiacheng Wang
Summary: This study reports an energy-efficient hydrogen evolution reaction (HER) electrocatalyst in alkaline medium, showing outstanding activity, surpassing commercial Pt/C and other reported electrocatalysts in alkaline conditions.
Article
Materials Science, Multidisciplinary
George Kim, Qing Gu, Philip Nash, Wei Chen
Summary: The properties of ternary Laves phases depend on the wide solubility ranges and site preferences of alloying elements, influencing performance significantly.
Article
Materials Science, Multidisciplinary
Philip Nash, Yang Zhou
Summary: The discontinuous precipitation reaction, a phase transformation observed in alloys for over 50 years, has the potential to offer significant strengthening if it progresses to completion. While it is known to be detrimental to mechanical properties when confined to grain boundary regions, this transformation can provide a new paradigm for both structural and functional applications.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Jie Zhang, Chen Cai, George Kim, Yusu Wang, Wei Chen
Summary: In this study, a large HEA dataset was generated using the EMTO-CPA method, and a ML model with the Deep Sets architecture was trained to achieve better predictive performance and generalizability. Association rule mining was also applied to describe the compositional dependence of HEA elastic properties and demonstrate the potential for data-driven alloy design.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xianli Wang, Forough Jahanbazi, Jialiang Wei, Carlo U. Segre, Wei Chen, Yuanbing Mao
Summary: In this study, the unexpected near-infrared emission of trivalent bismuth doped pyrochlore material was observed, and a dual-mode luminescence thermometry was demonstrated. The thermometry is based on the lifetime and luminescence intensity ratio of the near-infrared emission, providing high temperature sensitivity over a wide range.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Statistics & Probability
Xiaoning Kang, Lulu Kang, Wei Chen, Xinwei Deng
Summary: In this study, a novel generative approach is proposed to jointly model mixed quantitative and qualitative responses. By incorporating the dependency information of predictor variables, the method achieves computationally efficiency and accurate parameter estimation under a penalized likelihood framework.
JOURNAL OF MULTIVARIATE ANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Rui Feng, George Kim, Dunji Yu, Yan Chen, Wei Chen, Peter K. Liaw, Ke An
Summary: Elastic properties are crucial for the mechanical performance of materials, and can be adjusted through alloying. This study investigated the elastic constants of equiatomic ternary refractory multi-principal-element alloys and explored the effects of adding Ti and Mo elements on the elastic properties. The predictions based on Pugh's ratio, Cauchy pressure, and Poisson's ratio were consistent with the mechanical results, indicating the importance of elastic properties in designing ductile and strong refractory high-entropy alloys.
MATERIALS & DESIGN
(2022)
Article
Multidisciplinary Sciences
Gangbin Yan, George Kim, Renliang Yuan, Eli Hoenig, Fengyuan Shi, Wenxiang Chen, Yu Han, Qian Chen, Jian-Min Zuo, Wei Chen, Chong Liu
Summary: The authors investigate the co-intercalation of lithium and sodium ions in iron phosphate electrodes and demonstrate the control of lithium selectivity through intercalation kinetic manipulations. By increasing the energy barrier for sodium-ion intercalation using non-equilibrium solid-solution lithium seeding or remnant lithium, the lithium selectivity is enhanced.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Xin Wang, Rafael Rodriguez De Vecchis, Chenyang Li, Hanlei Zhang, Xiaobing Hu, Soumya Sridar, Yuankang Wang, Wei Chen, Wei Xiong
Summary: Metastable alloys with transformation-/twinning-induced plasticity (TRIP/TWIP) can overcome the strength-ductility trade-off in structural materials. A strategy for designing metastable HEAs is proposed and validated by discovering seven alloys with experimentally observed metastability for TRIP/TWIP. The deformation mechanism of metastable alloys is attributed to unstable martensite fault energy (UMFE)/unstable twin fault energy (UTFE) rather than intrinsic stacking fault energy (ISFE).
Article
Materials Science, Multidisciplinary
Jialiang Wei, Leon Shaw, Wei Chen
Summary: In this study, a comparative first-principles investigation was conducted to understand the relationship between structural changes and Cr migration in layered O3 and hybrid-phased NaCrO2. The results show that after Cr migration, the hybrid-phased NaCrO2 undergoes greater layer shrinkage compared to the O3 phase. The concentration of Na, local 3D configurations, and 2D in-plane geometries were found to affect the Cr migration energy, and a more uniform distribution of the Cr-O bond lengths suggests suppressed Cr migration in doped NaCrO2. This comparative study highlights the significance of hybrid-phased structures in the development of layered cathode materials.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Multidisciplinary Sciences
Gaoxin Lin, Zhuang Zhang, Qiangjian Ju, Tong Wu, Carlo U. U. Segre, Wei Chen, Hongru Peng, Hui Zhang, Qiunan Liu, Zhi Liu, Yifan Zhang, Shuyi Kong, Yuanlv Mao, Wei Zhao, Kazu Suenaga, Fuqiang Huang, Jiacheng Wang
Summary: In this study, we demonstrate a bottom-up evolution route to prepare ultrafine Rh nanoparticles with large lattice spacings and grain boundaries by electrochemically reducing Cs3Rh2I9 halide-perovskite clusters on N-doped carbon. These Rh nanoparticles derived from Cs3Rh2I9 clusters exhibit significantly enhanced mass and area activity toward hydrogen evolution reaction in both alkaline and chloralkali electrolyte, surpassing liquid-reduced Rh nanoparticles and bulk Cs3Rh2I9-derived Rh via top-down electro-reduction transformation. Theoretical calculations reveal that water activation could be promoted on Cs3Rh2I9 clusters-derived Rh nanoparticles enriched with multiply sites, thereby facilitating alkaline hydrogen evolution.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yanfang Liu, Jie Ren, Shuai Guan, Chenyang Li, Yin Zhang, Saideep Muskeri, Zhiyuan Liu, Dunji Yu, Yan Chen, Ke An, Yang Cao, Wei Liu, Yuntian Zhu, Wei Chen, Sundeep Mukherjee, Ting Zhu, Wen Chen
Summary: CoCrFeMnNi high-entropy alloys (HEAs) are additively manufactured using L-DED and L-PBF processes. Comparative studies reveal substantial differences in microstructures, crystallographic texture, and deformation mechanisms between L-DED and L-PBF samples. The L-DED samples exhibit a mixed crystallographic texture, larger solidification cell sizes, and enhanced plastic deformation capabilities, leading to higher ductility compared to the L-PBF samples. This work provides fundamental insights into the deformation mechanisms of additively manufactured HEAs and emphasizes the critical impact of processing conditions on solidification microstructure and material design by additive manufacturing.
Article
Materials Science, Multidisciplinary
Jie Ren, Margaret Wu, Chenyang Li, Shuai Guan, Jiaqi Dong, Jean-Baptiste Forien, Tianyi Li, Katherine S. Shanks, Dunji Yu, Yan Chen, Ke An, Kelvin Y. Xie, Wei Chen, Thomas Voisin, Wen Chen
Summary: We develop a dual-phase nanolamellar structure in a high-entropy alloy using laser powder-bed fusion additive manufacturing. This structure exhibits a combination of ultrahigh yield strength and large tensile ductility. The deformation mechanisms involve effective blockage of dislocation motion, stacking fault-mediated deformation, and martensitic transformation. The cooperative deformation of the dual phases, assisted by the semi-coherent lamellar interfaces, gives rise to the large ductility.
Article
Materials Science, Multidisciplinary
Wei Chen, Lin Li, Qiang Zhu, Houlong Zhuang
Summary: Complex concentrated alloys (CCAs) have attracted significant attention for their wide range of applications and novel properties. Chemical short-range ordering (CSRO) in CCAs plays a crucial role in understanding their properties and phase stability. This article reviews recent experimental efforts in identifying and characterizing CSRO in CCAs, and discusses theoretical and computational techniques, such as density functional theory (DFT) and molecular dynamics (MD), used to investigate CSRO effects.