Article
Materials Science, Multidisciplinary
Raymond Kwesi Nutor, Q. P. Cao, X. D. Wang, D. X. Zhang, J. Z. Jiang
Summary: By Mo alloying and thermomechanical treatments, a series of (Fe50Mn27Ni10Cr13)Mo-x alloys have been successfully designed, with significantly enhanced tensile strength while maintaining close to 25% ductility. TEM investigations revealed the presence of deformation twins, dislocation cells, and ordered bcc nano-particles in the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
L. Zhao, L. Jiang, L. X. Yang, H. Wang, W. Y. Zhang, G. Y. Ji, X. Zhou, W. A. Curtin, X. B. Chen, P. K. Liaw, S. Y. Chen, H. Z. Wang
Summary: By employing the High-Throughput Hot-Isostatic-Pressing based Micro-Synthesis Approach (HT-HIP-MSA), 85 combinatorial alloys in a 13-principal element alloying space were synthesized and characterized, and their composition-structure-property relationships were experimentally and computationally analyzed. The results revealed that the addition of Mn extended the solubility of the alloys, most quinary and senary alloys exhibited destabilizing behavior, and the alloys showed distinctive solid-solution-strengthening effects.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Huaxin Li, Weijian Shen, Weijian Chen, Weizhen Wang, Guohao Liu, Chuanyang Lu, Wenjian Zheng, Yinghe Ma, Jianguo Yang, Zhenyu Ding, Hai Zou, Yanming He
Summary: A high-performance high-entropy alloy (HEA) brazed joint with a microstructure similar to the base metal was successfully fabricated through proper interface control. The joint shear strength was significantly improved with a strengthening mechanism involving high-entropy solid solution, precipitation strengthening, and grain refinement. The brazed joint exhibited desirable high-temperature stability with minor degradation of strength after annealing, showing great potential for high temperature applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Weijie Zheng, Shulin Lu, Shusen Wu, Xiaohua Chen, Wei Guo
Summary: Due to their solid solution structure, high-entropy alloys exhibit high strength and resistance to softening at both high and ambient temperatures. However, their high density and low plasticity at ambient temperature limit their widespread applications. This study investigated the microstructure and mechanical properties of MoNbVTx HEA with different Ta contents and found that certain alloys exhibited superior high temperature performance and relatively low density, making them potential materials for structural applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Xueyi Guo, Peidong Liu, Yang Xia, Zhaowang Dong, Hanning Liu, Yubing Chen
Summary: This study presents a novel process for fabricating crack-free high-entropy alloys through two-step hydrogen reduction. The resulting alloy exhibits excellent mechanical properties, including hardness, compression strength, and tensile strength.
MATERIALS CHARACTERIZATION
(2022)
Article
Chemistry, Physical
Yuanqi Luo, Jing Zhang, Qingquan Kong, Qiangguo Li, Hui Wang, Xiaoqiang Wu, Weitang Yao, Qingyuan Wang, Xuguang An
Summary: Ultrafine lamellar-structured FeCrAl alloys with excellent mechanical properties were prepared by manipulating the content of Al1.8CrCuFeNi2 particles through spark plasma sintering and mechanical milling.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Huifang Yin, Wenqing Ge, Ruqing Li, Li Zhou, Fengshi Yin, Huajian Sun, Jinzhao Sun, Jiqing Zhao
Summary: AlCrFeNiMoNb high-entropy alloys were coated onto a ZM5 alloy using high-velocity air fuel spray, resulting in a highly dense structure and significantly improved wear and corrosion resistance properties of the ZM5 alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Tianxin Li, Shudao Wang, Wenxue Fan, Yiping Lu, Tongmin Wang, Tingju Li, Peter K. Liaw
Summary: TiZrHfNbTa refractory high-entropy alloys (RHEAs) exhibit poor phase stability at intermediate temperatures. By calculating phase diagrams, a Ta-free and Hf-depleted Ti30Zr30Hf16Nb24 RHEA with outstanding phase stability was designed. The cold-rolled plus recrystallization-annealed (CR+A) Ti30Zr30Hf16Nb24 RHEA contained (Ti, Zr)-rich nano-precipitates controlled by the spinodal decomposition mechanism, which contributed to its superior strength-ductility combination.
Article
Materials Science, Multidisciplinary
P. X. Yan, J. Chang, W. L. Wang, X. N. Zhu, M. J. Lin, B. Wei
Summary: The liquid CoCrFeNiMo0.8 high entropy alloy (HEA) undergoes undercooling and solidifies rapidly. The transition from slow lamellar eutectic growth to rapid anomalous eutectic growth is observed, which affects crystal orientation and mechanical properties. The growth mechanism transition is due to independent nucleation and cooperative branched growth of the two eutectic phases. The structural refinement and increase in volume fraction of anomalous eutectic contribute to the improved hardness, compression strength, and ductility of the alloy.
Article
Nanoscience & Nanotechnology
Xiaopeng Liang, Liang Kang, Huizhong Li, Ruixin Wang, Qingbo Wu, Bin Liu, Li Wang
Summary: This study investigated the mechanical properties and texture of powder metallurgy FeCoCrNiN0.07 HEA sheets under cold-rolled and different annealed conditions. It was found that the mechanical anisotropy was significantly reduced in the sheet after annealing at 750 degrees C. The main texture components and the equivalent Schmid factors were analyzed to explain the mechanical property anisotropy of the FeCoCrNiN0.07 sheet.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Engineering, Manufacturing
Yansong Zhang, Huaming Wang, Yanyan Zhu, Shuquan Zhang, Fang Cheng, Junwei Yang, Bing Su, Chen Yang
Summary: Lightweight refractory high-entropy alloys (LRHEAs) have lower density and better ductility compared to other refractory high-entropy alloys. Laser directed energy deposition additive manufacturing (LDED) technology is an ideal process for preparing LRHEAs. This study investigated the microstructure evolution and the plastic deformation mechanisms of a new LRHEA Al0.3NbTi3VZr1.5 fabricated by LDED.
ADDITIVE MANUFACTURING
(2023)
Article
Chemistry, Physical
Qingqi Liu, Xingshuo Liu, Xiaofeng Fan, Rui Li, Xue Tong, Pengfei Yu, Gong Li
Summary: Based on pseudo-ternary phase diagram and microscopic observation, three eutectic high entropy alloys (EHEAs) with uniform lamellar microstructure were designed. One of the alloys exhibits better tensile property at room temperature. The formation of AlCoCrNi EHEAs was found to be related to the ratio of (Co, Ni) to Al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Yunfei Li, Huameng Fu, Zhengwang Zhu, Long Zhang, Zhengkun Li, Hong Li, Haifeng Zhang
Summary: In this study, the effects of the Fe/Ni ratio on the microstructure, mechanical properties, and corrosion resistance of FexNi65-xCr20Al10Nb5 alloy in a 3.5 wt% NaCl solution were systematically investigated. It was observed that the dominant phases shifted from FCC to BCC with an increase in the Fe/Ni molar ratio. The strength of the alloy increased with a higher Fe/Ni ratio, while the plasticity decreased. The alloy exhibited the best corrosion resistance when x = 35, which was attributed to the dominant presence of FCC phases in the dendritic region.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Crystallography
Qiaoyu Li, Tengfei Ma, Yuliang Jin, Xiaohong Wang, Duo Dong, Dongdong Zhu
Summary: The effects of Sn and Mo alloying elements on the microstructure and electrochemical properties of TiZrTaNb high entropy alloys were studied, showing that they promoted dendritic growth and accelerated interdendritic segregation, with TiZrTaNbMo alloy exhibiting excellent corrosion properties. Alloying elements have a significant impact on the microstructure and electrochemical properties of high entropy alloys.
Article
Nanoscience & Nanotechnology
Yegi Vamsi Krishna, Ujjawal Kumar Jaiswal, M. R. Rahul
Summary: The study used machine learning to predict a multiphase alloy system SS + IM with high entropy alloys, with Artificial Neural Network (ANN) showing the highest accuracy. Experimental verification confirmed the accuracy of ANN predictions in the alloy system, but also revealed overlapping design parameters hindering successful prediction.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Shu-Min Zheng, Wen-Qiang Feng, Shao-Qing Wang
COMPUTATIONAL MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Jiang Lu, Shang-Yi Ma, Xin-Xin Wang, Shao-Qing Wang
COMPUTATIONAL MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Xin-Xin Wang, Liang-Liang Niu, Shaoqing Wang
JOURNAL OF NUCLEAR MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Shu-Min Zheng, Shao-Qing Wang
MATERIALS RESEARCH EXPRESS
(2018)
Article
Materials Science, Multidisciplinary
Shang-Yi Ma, Shao-Qing Wang
COMPUTATIONAL MATERIALS SCIENCE
(2019)
Article
Chemistry, Multidisciplinary
Shaoqing Wang
Article
Materials Science, Multidisciplinary
Qiu-Jie Chen, Shang-Yi Ma, Shao-Qing Wang
Article
Materials Science, Multidisciplinary
Shenghui Sun, Xin Zhang, Shaoqing Wang
MATERIALS RESEARCH EXPRESS
(2020)
Article
Multidisciplinary Sciences
Shaoqing Wang
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Multidisciplinary
Xin Zhang, Shaoqing Wang
Summary: This study systematically investigated the effects of point defects on the mechanical properties of graphene/aluminum composites, showing that the defects significantly enhance the interfacial bonding strength, especially the single vacancy defect. The formation of strong Al-C covalent bonds at the defects is found to be the fundamental reason for improving the mechanical properties.
Article
Materials Science, Multidisciplinary
Qiu-Jie Chen, Shang-Yi Ma, Shao-Qing Wang
Summary: The role of the omega phase in beta-Ti alloys, particularly in the twinning process, was investigated using first-principles calculations. A new twinning mechanism assisted by the omega phase was proposed, and the stability of the twin boundary was found to improve with the appearance of ITB omega phase. The study provides new insights on the deformation behaviors of beta-Ti alloys.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Hong He, Shangyi Ma, Shaoqing Wang
Summary: The variations of grain boundary energies with tilt angles in W and β-Ti were found to differ, primarily due to differences in their grain boundary microstructures and the evolution of atoms into stable structures in β-Ti. Additionally, a geometric parameter was defined to explore the relationships between grain boundary energies and grain boundary planes, which showed that the relationships can be described by simple functions of sin(theta) for certain lattice misorientations. This research extends the investigation of grain boundaries to higher temperatures and deepens the understanding of temperature contributions to microstructure evolution at grain boundaries.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Linlin Ma, Chao Cheng, Xin Zhang, Shaoqing Wang
Summary: In recent years, extensive research has been carried out on two-dimensional (2D) materials due to their excellent physical properties. This study examines the stabilities of molybdenum boride with different Mo content using first-principles calculation. The effect of Mo content on the stability and the chemical bonding properties are analyzed, shedding light on the observed variable atomic structures in experimentally synthesized molybdenum borides.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Xin Zhang, Shenghui Sun, Shaoqing Wang
Article
Chemistry, Multidisciplinary
Xin Zhang, Shaoqing Wang