Article
Chemistry, Physical
Kun Wang
Summary: This paper introduces an improved Pair Approximation (MQMDPA) model, which can better describe the thermodynamic characteristics of binary solutions with multiple short-range ordering (SRO) and requires fewer model parameters. By distinguishing the ordered pairs, MQMDPA can more realistically describe SROs and improve the fitting performance.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Multidisciplinary Sciences
Haw-Wen Hsiao, Rui Feng, Haoyang Ni, Ke An, Jonathan D. Poplawsky, Peter K. Liaw, Jian-Min Zuo
Summary: This study reveals the impacts of short-range ordering on chemical homogeneity and dislocation slip in a CrCoNi alloy using a diffraction data-mining analysis. The results show the existence of two types of short-range ordering in nanoclusters, which significantly affect the mechanical strength of the material. These findings provide important opportunities for atomistic-structure study and design in concentrated alloys.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Irene J. Beyerlein, Penghui Cao, Tresa M. Pollock
Summary: Complex concentrated alloys (CCAs) are materials with three or more elements in similar proportions and lacking chemical long-range order. They have attracted attention in the past two decades and offer a new materials design paradigm for applications in aggressive environments. However, understanding their behavior is challenging due to the fluctuating chemical and structural variations at the atomic and nanoscales.
Article
Chemistry, Inorganic & Nuclear
Dileep Kumar Yadav, Qiang Zhang, Krzysztof Gofryk, Harikrishnan S. Nair, Sitharaman Uma
Summary: We conducted a comprehensive study on the synthesis, structure, and magnetic properties of honeycomb oxide Na3Mn2SbO6 using neutron diffraction, heat capacity, and magnetization measurements. Our results confirmed a monoclinic structure and demonstrated the coexistence of long-range and short-range magnetic ordering. We also observed a spin-flop transition and identified the fully ordered magnetic ground state of Na3Mn2SbO6 as a Neel antiferromagnetic. These findings highlight the importance of developing new honeycomb oxides.
INORGANIC CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Q. Zhang, X. Jin, X. H. Shi, J. W. Qiao, P. K. Liaw
Summary: The CrCoNi medium-entropy alloy exhibits higher plastic strength with slow cooling due to the inconsistency between residual stress and short-range orderings. Quantification of the roles of residual stress and SROs reveals that SROs contribute more to the strengthening effect.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Multidisciplinary Sciences
Giada Franceschi, Pavel Kocan, Andrea Conti, Sebastian Brandstetter, Jan Balajka, Igor Sokolovic, Markus Valtiner, Florian Mittendorfer, Michael Schmid, Martin Setvin, Ulrike Diebold
Summary: This study presents atomic force microscopy images to investigate the distribution of K+ ions on the cleaved mica surface under ultra-high vacuum conditions. The data reveal the presence of short-range ordering and provide insights into the distribution of subsurface Al3+ ions.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Shihua Ma, Jun Zhang, Biao Xu, Yaoxu Xiong, Wei Shao, Shijun Zhao
Summary: This study systematically investigates the effect of disorder and chemical short-range ordering (SRO) on dislocation properties in high-entropy alloys (HEAs). The results show that SRO can prolong the nucleation period of dislocations and increase the resistance for dislocation cross-slip, leading to improved elasticity and strength in HEAs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Flynn Walsh, Anas Abu-Odeh, Mark Asta
Summary: This passage addresses the seemingly contradictory state of research on short-range order in many-component alloys by critically reviewing the characterization of face-centered-cubic 3d systems. Despite the lack of direct observations, the ordering of widely studied alloys is argued to be primarily interesting for its potential ubiquity. To clarify this situation, the article proposes future research directions based on historical results, including a review of the fundamental principles of ordering and clustering.
Article
Materials Science, Multidisciplinary
Yuhui Zhu, Weizhen Wang, Yuanyuan Song, Shiming Zhang, Hong Li, Aimin Wang, Haifeng Zhang, Zhengwang Zhu
Summary: This study reports the occurrence of atomic-scale structural clustering and atomic arrangements during isothermal annealing. The evolution of atomic-scale structures is closely related to composition variation and has important implications for the chemical and topological packing during the early crystallization stage of metallic glasses.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Yundi Zhou, Tan Shi, Jing Li, Lu Wu, Qing Peng, Chenyang Lu
Summary: The evolution of short-range order (SRO) structures in NiCoFeCrMn under irradiation was investigated in this study. Molecular dynamics and lattice kinetic Monte Carlo simulations were used to analyze the atomistic mechanism of SRO evolution during and after cascade collisions. It was found that SRO structures could be destroyed in a short time by cascade collisions but could recover through atomic diffusion in a longer time. The destruction rate depended on the primary knock-on atom energies and showed a universal law with respect to the number of replacement-per-atom. Vacancy diffusion simulations revealed that the SRO recovery rates varied significantly for different element pairs due to their distinct diffusion rates. Consequently, the SRO state under irradiation differed from that in thermodynamic equilibrium due to the differences in destruction and recovery rates for each element pair.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Materials Science, Multidisciplinary
Shuai Chen, Tian Wang, Xiaoyan Li, Yuan Cheng, Gang Zhang, Huajian Gao
Summary: The effects of elemental concentration, short-range ordering, and atomic segregation on the melting temperature of high-entropy alloys (HEAs) were studied. It was found that the melting temperature of HEAs increases with decreasing Cu concentration, and Cu atoms tend to break bonds more readily during heating. The reduced melting temperature is attributed to the formation of more short-range ordering and atomic segregation with increasing Cu concentration.
Article
Materials Science, Multidisciplinary
Shuai Chen, Zachary H. Aitken, Subrahmanyam Pattamatta, Zhaoxuan Wu, Zhi Gen Yu, David J. Srolovitz, Peter K. Liaw, Yong-Wei Zhang
Summary: By employing density-functional theory calculations, Monte Carlo method, and molecular dynamic simulation, this study investigates the role of short-range ordering (SRO) on dislocation kinetics in a BCC MoTaTiWZr high-entropy alloy. The results demonstrate that SRO enhances the energy barriers for both edge and screw dislocation motion, giving rise to the dominance of edge dislocations in the BCC RHEA.
Article
Materials Science, Multidisciplinary
Yuan Wu, Fei Zhang, Xiaoyuan Yuan, Hailong Huang, Xiaocan Wen, Yihan Wang, Mengyuan Zhang, Honghui Wu, Xiongjun Liu, Hui Wang, Suihe Jiang, Zhaoping Lu
Summary: This letter summarizes the formation and characterization of short-range orderings (SROs) and their effects on the deformation behavior of high-entropy alloys (HEAs). It shows that tuning the degree of SROs is an effective way for optimizing the mechanical properties of HEAs. The challenges and future research activities regarding the formation mechanism and characterization of SROs in HEAs are also discussed.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Jiwei Geng, Yugang Li, Feifei Wang, Zhiping Wang, Peikang Xia, Xianfeng Li, Dong Chen, Mingliang Wang, Haowei Wang
Summary: Cyclic deformation of an Al-Cu-Mg composite strengthened by small non-shareable particles was investigated using strain controlled low-cycle fatigue tests. The in-situ TiB2/Al-Cu-Mg composite showed higher fatigue life compared to reported composites. The cyclic hardening response was attributed to non-shareable particles, dislocations, and dynamically deformation-induced short-range orderings. The cyclic hardening model, considering plastic strain evolution, was well fitted with experimental results. The onset of stress serration was found to be dependent on strain amplitude rather than cumulative plastic strain.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Materials Science, Multidisciplinary
Anas Abu-Odeh, Blas Pedro Uberuaga, Mark Asta
Summary: We compare kinetic Monte Carlo (kMC) simulations of isothermal short-range ordering (SRO) and clustering (SRC) kinetics in binary FCC alloys with a mean-field concentration wave (CW) model. The CW model provides order-of-magnitude agreement with kMC simulations for ordering/clustering relaxation times across a wide range of temperatures and compositions. The advantage of the CW model is its simplicity and performance, as it does not require parameterization of vacancy hopping energy barriers.
Article
Materials Science, Multidisciplinary
S. F. Liu, Y. H. Liu, L. J. Li, C. Deng, H. Y. Fan, Y. Guo, L. F. Cao, Q. Liu
JOURNAL OF MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Y. Zou, Y. B. Xu, D. T. Han, Z. P. Hu, R. D. K. Misra, L. F. Cao, H. Song
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Chemistry, Physical
Bin Liao, Lingfei Cao, Xiaodong Wu, Yan Zou, Guangjie Huang, Paul A. Rometsch, Malcolm J. Couper, Qing Liu
Article
Materials Science, Multidisciplinary
Y. H. Gao, C. Yang, J. Y. Zhang, L. F. Cao, G. Liu, J. Sun, E. Ma
MATERIALS RESEARCH LETTERS
(2019)
Article
Materials Science, Multidisciplinary
Chang Chen, Sanfeng Qian, Shan Wang, Rui Liu, Bin Liao, Long Niu, Zhihong Zhong, Pin Lu, Ping Li, Lingfei Cao, Jan W. Coenen, Yucheng Wu
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
Boran Tao, Baifeng Luan, Risheng Qiu, Qiang Fang, Lingfei Cao, Yushun Liu, Xinyu Zhang, Riping Liu, Qing Liu
JOURNAL OF NUCLEAR MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
S. Wang, S. K. Feng, C. Chen, B. Liao, Z. H. Zhong, P. Li, L. F. Cao
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2019)
Article
Chemistry, Physical
Chang Chen, Sanfeng Qian, Rui Liu, Shan Wang, Bin Liao, Zhihong Zhong, Lingfei Cao, Jan W. Coenen, Yucheng Wu
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Multidisciplinary
Yahui Liu, Shifeng Liu, Haiyang Fan, Chao Deng, Lingfei Cao, Haitao Ni, Qing Liu
MATERIALS CHARACTERIZATION
(2019)
Article
Nanoscience & Nanotechnology
Qianqian Zhu, Lingfei Cao, Xiaodong Wu, Yan Zou, Malcolm J. Couper
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Chemistry, Physical
Bin Liao, Xiaodong Wu, Lingfei Cao, Guangjie Huang, Zhengan Wang, Qing Liu
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Nanoscience & Nanotechnology
Wenbin Tu, Jianguo Tang, Yong Zhang, Lingfei Cao, Lehang Ma, Qianqian Zhu, Lingying Ye, Shengdan Liu
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Chemistry, Physical
Yichang Wang, Lingfei Cao, Xiaodong Wu, Xin Tong, Bin Liao, Guangjie Huang, Zhengan Wang
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Huang Li, Huang Guang-jie, Wu Xiao-dong, Cao Ling-fei, Li Jia
CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Hao Zhong, Lingfei Cao
THERMEC 2018: 10TH INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Y. Liu, K. Zweiacker, C. Liu, J. T. McKeown, J. M. K. Wiezorek
Summary: The evolution of rapid solidification microstructure and solidification interface velocity of hypereutectic Al-20at.%Cu alloy after laser melting has been studied experimentally. It was found that the formation of microstructure was dominated by eutectic, alpha-cell, and banded morphology grains, and the growth modes changed with increasing interface velocity.
Article
Materials Science, Multidisciplinary
Bharat Gwalani, Julian Escobar, Miao Song, Jonova Thomas, Joshua Silverstein, Andrew Chihpin Chuang, Dileep Singh, Michael P. Brady, Yukinori Yamamoto, Thomas R. Watkins, Arun Devaraj
Summary: Castable alumina forming austenitic alloys exhibit superior creep life and oxidation resistance at high temperatures. This study reveals the mechanism behind the enhanced creep performance of these alloys by suppressing primary carbide formation and offers a promising alloy design strategy for high-temperature applications.
Article
Materials Science, Multidisciplinary
Jian Song, Qi Zhang, Songsong Yao, Kunming Yang, Houyu Ma, Jiamiao Ni, Boan Zhong, Yue Liu, Jian Wang, Tongxiang Fan
Summary: Recent studies have shown that achieving an atomically flat surface for metals can greatly improve their oxidation resistance and enhance their electronic-optical applications. Researchers have explored the use of graphene as a covering layer to achieve atomically flat surfaces. They found that high-temperature deposited graphene on copper surfaces formed mono-atomic steps, while annealed copper and transferred graphene on copper interfaces formed multi-atomic steps.
Article
Materials Science, Multidisciplinary
Jennifer A. Glerum, Jon-Erik Mogonye, David C. Dunand
Summary: Elemental powders of Al, Ti, Sc, and Zr are blended and processed via laser powder-bed fusion to create binary and ternary alloys. The microstructural analysis and mechanical testing show that the addition of Ti results in the formation of primary precipitates, while the addition of Sc and Zr leads to the formation of fine grain bands. The Al-0.25Ti-0.25Zr alloy exhibits comparable strain rates to Al-0.5Zr at low stresses, but significantly higher strain rates at higher stresses during compressive creep testing. Finite element modeling suggests that the connectivity of coarse and fine grain regions is a critical factor affecting the creep resistance of the alloys.
Article
Materials Science, Multidisciplinary
P. Jannotti, B. C. Hornbuckle, J. T. Lloyd, N. Lorenzo, M. Aniska, T. L. Luckenbaugh, A. J. Roberts, A. Giri, K. A. Darling
Summary: This work characterizes the thermo-mechanical behavior of bulk nanocrystalline Cu-Ta alloys under extreme conditions. The experiments reveal that the alloys exhibit unique mechanical properties, behaving differently from conventional nanocrystalline Cu. They do not undergo grain coarsening during extrusion and exhibit behavior similar to coarse-grained Cu.
Article
Materials Science, Multidisciplinary
Yiqing Wei, Jingwei Li, Daliang Zhang, Bin Zhang, Zizhen Zhou, Guang Han, Guoyu Wang, Carmelo Prestipino, Pierric Lemoine, Emmanuel Guilmeau, Xu Lu, Xiaoyuan Zhou
Summary: This study proposes a new strategy to modify microstructure by phase regulation, which can simultaneously enhance carrier mobility and reduce lattice thermal conductivity. The addition of Cu in layered SnSe2 induces a phase transition that leads to increased grain size and reduced stacking fault density, resulting in improved carrier mobility and lower lattice thermal conductivity.
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
Materials Science, Multidisciplinary
X. Y. Xu, C. P. Huang, H. Y. Wang, Y. Z. Li, M. X. Huang
Summary: The limited slip systems of magnesium (Mg) and its alloys hinder their wide applications. By conducting tensile straining experiments, researchers discovered a rate-dependent transition in the dislocation mechanisms of Mg alloys. At high strain rates, glissile dislocations dominate, while easy-glide dislocations dominate at low strain rates. Abundant glissile dislocations do not necessarily improve ductility.
Article
Materials Science, Multidisciplinary
M. S. Szczerba, M. J. Szczerba
Summary: Inverse temperature dependences of the detwinning stress were observed in face-centered cubic deformation twins in Cu-8at.%Al alloy. The detwinning stress increased with temperature when the pi detwinning mode was involved, but decreased when the pi/3 mode was involved. The dual effect of temperature on the detwinning stress was due to the reduction of internal stresses pre-existing within the deformation twins. The complete reduction of internal stresses at about 530 degrees C led to the equivalence of the critical stresses of different detwinning modes and a decrease in the yield stress anisotropy of the twin/matrix structure.
Article
Materials Science, Multidisciplinary
Taowen Dong, Tingting Qin, Wei Zhang, Yaowen Zhang, Zhuoran Feng, Yuxiang Gao, Zhongyu Pan, Zixiang Xia, Yan Wang, Chunming Yang, Peng Wang, Weitao Zheng
Summary: The interaction between the electrode and the electric double layer (EDL) significantly influences the energy storage mechanism. By studying the popular alpha-Fe2O3 electrode and the EDL interaction, we find that the energy storage mechanism of the electrode can be controlled by modulating the EDL.
Article
Materials Science, Multidisciplinary
Matthew R. Barnett, Jun Wang, Sitarama R. Kada, Alban de Vaucorbeil, Andrew Stevenson, Marc Fivel, Peter A. Lynch
Summary: The elastic-plastic transition in magnesium alloy Mg-4.5Zn exhibits bursts of deformation, which are characterized by sudden changes in grain orientation. These bursts occur in a coordinated manner among nearby grains, with the highest burst rate observed at the onset of full plasticity. The most significant burst events are associated with twinning, supported by the observation of twinned structures using electron microscopy. The bursts are often preceded and followed by a stasis in peak movement, indicating a certain "birth size" for twins upon formation and subsequent growth at a later stage.
Article
Materials Science, Multidisciplinary
Vaidehi Menon, Sambit Das, Vikram Gavini, Liang Qi
Summary: Understanding solute segregation thermodynamics is crucial for investigating grain boundary properties. The spectral approach and thermodynamic integration methods can be used to predict solute segregation behavior at grain boundaries and compare with experimental observations, thus aiding in alloy design and performance control.
Article
Materials Science, Multidisciplinary
Feiyu Qin, Lei Hu, Yingcai Zhu, Yuki Sakai, Shogo Kawaguchi, Akihiko Machida, Tetsu Watanuki, Yue-Wen Fang, Jun Sun, Xiangdong Ding, Masaki Azuma
Summary: This study reports on the negative and zero thermal expansion properties of Cd2Re2O7 and Cd1.95Ni0.05Re2O7 materials, along with their ultra-low thermal conductivity. Through investigations of their structures and phonon calculations, the synergistic effect of local structure distortion and soft phonons is revealed as the key to achieving these distinctive properties.
Article
Materials Science, Multidisciplinary
Thomas Beerli, Christian C. Roth, Dirk Mohr
Summary: A novel testing system for miniature specimens is designed to characterize the plastic response of materials for which conventional full-size specimens cannot be extracted. The system has an automated operation process, which reduces the damage to specimens caused by manual handling and improves the stability of the test results. The experiments show that the miniature specimens extracted from stainless steel and aluminum have high reproducibility, and the results are consistent with those of conventional-sized specimens. A correction procedure is provided to consider the influence of surface roughness and heat-affected zone caused by wire EDM.
Article
Materials Science, Multidisciplinary
Rani Mary Joy, Paulius Pobedinskas, Nina Baule, Shengyuan Bai, Daen Jannis, Nicolas Gauquelin, Marie-Amandine Pinault-Thaury, Francois Jomard, Kamatchi Jothiramalingam Sankaran, Rozita Rouzbahani, Fernando Lloret, Derese Desta, Jan D'Haen, Johan Verbeeck, Michael Frank Becker, Ken Haenen
Summary: This study investigates the influence of film microstructure and composition on the Young's modulus and residual stress in nanocrystalline diamond thin films. The results provide insights into the mechanical properties and intrinsic stress sources of these films, and demonstrate the potential for producing high-quality nanocrystalline diamond films under certain conditions.