Abstract null null Machine Learning has thrived on the emergence of data-driven materials science. However, the materials datasets acquired at existing research efforts have significant imbalance issues. This paper investigated the data imbalance for the glass-forming ability of ternary alloy systems, which consists of abundant, low-fidelity high-throughput data, and sparse, high-fidelity traditional experimental data. We demonstrated a new method to handle the data imbalance and trained artific...
#1M.L. Jenkins(TCD: Trinity College Dublin)H-Index: 1
#2G.D.W. Smith(TCD: Trinity College Dublin)H-Index: 31
Abstract null null Cayron. null [1] , null [2] null has sought to discredit our identification of a 9R structure of copper precipitates in iron. We responded to the first of these papers with a brief rebuttal null [3] . Cayron however repeated his claim and has presented new arguments null [2] null which attempt to explain our electron microscopy images as due to Moire fringes. We examine Cayron's model, and find it not only physically unconvincing, but incapable of explaining our results. We al...
#1Parisa Edalati(Nagoya Institute of Technology)H-Index: 2
#2Abbas Mohammadi(International Institute of Minnesota)H-Index: 5
Last. Kaveh Edalati(International Institute of Minnesota)H-Index: 49
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High-entropy alloys are potential candidates for various applications including hydrogen storage in the hydride form and energy storage in batteries. This study employs HEAs as new anode materials for nickel - metal hydride (Ni-MH) batteries. The TixZr2-xCrMnFeNi alloys with different Ti/Zr ratios, having the C14 Laves structure, are used. These alloys are selected because they show room-temperature hydriding/dehydriding capability. The HEAs successfully act as negative electrode of Ni-MH batter...
#2Yin Zhang(GT: Georgia Institute of Technology)H-Index: 10
Last. Ting Zhu(GT: Georgia Institute of Technology)H-Index: 67
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Abstract null null Abnormal grain growth can occur in polycrystalline materials with only a fraction of grains growing drastically to consume other grains. Here we report abnormal grain growth in ultrafine grained metal in a rarely explored high-cycle loading regime at ambient temperature. Abnormal grain growth is observed in electroplated Ni microbeams with average initial grain sizes less than 640 nm under a large number of loading cycles (up to 109) with low strain amplitudes ( null orientati...
#1Xingwei Huang(USTC: University of Science and Technology of China)
#2Xinzhe Zhou(USTC: University of Science and Technology of China)H-Index: 3
Last. Zhiqing Yang(USTC: University of Science and Technology of China)H-Index: 39
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Abstract null null Influence of microtwins (MTs) on Portevin-Le Châtelier (PLC) effect of a Ni-Co-based superalloy was investigated by tensile tests and transmission electron microscopy. Two groups of samples were pre-strained at 725 °C to produce MTs. Existence of MTs improved the alloy's yield strength, but it changed the PLC effect from type-B to type-C, and increased the serration amplitudes by ∼6 times, during tensile deformation at 400 °C. Microstructural characterizations indicate that di...
#1Wu-Rong Jian(UCSB: University of California, Santa Barbara)H-Index: 12
#2Zhuocheng Xie(SCUT: South China University of Technology)H-Index: 2
Last. Irene J. Beyerlein(UCSB: University of California, Santa Barbara)H-Index: 82
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Abstract null null We perform molecular dynamics simulations to investigate shock-induced amorphization in CoCrNi, a medium entropy alloy (MEA) and its mean-field variant without lattice distortion. We show that a critical velocity exists above which amorphization occurs. At a low shock velocity of 800 m/s, dislocation slip and twins dominate and amorphization does not happen, but as the shock velocity increases, the deformation mechanism transitions from slip and twinning to solid-state amorphi...
Abstract null null In this study, the recrystallization process of selective laser melted (SLM) commercially pure titanium (CP-Ti) was followed by a quasi-in-situ electron backscatter diffraction (EBSD) method at 800 °C and 700 °C. Abnormal grain growth (AGG) initially emerges at the beginning of annealing at 800 °C and is primarily caused by strain-induced boundary migration (SIBM). However, at the beginning of annealing at 700 °C, many small equiaxed grains are formed due to more recrystalliza...
Abstract null null Nonuniform deformation in a tensile test of an aluminum alloy sheet was visualized by a coating of ∼ 5 μm thick mechanoluminescence (ML) material film (Sr2AlO4:Eu2+) on the specimen. It is reported that ML material emits visible light under mechanical stress, and that the intensity increases with von Mises stress. Fine sized ML particles were used to form thin film on the specimen with a screen-printing technique. During the tensile test of A1050 aluminum sheets, it is observe...
Last. Xu Wu(XYNU: Xinyang Normal University)H-Index: 17
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Abstract null null In general, aqueous Zn-ion batteries (ZIBs) are considered to be ideal candidates over Li-ion batteries due to their high safety and environmental friendliness. ZIBs development is limited by the lack of cathode materials that are suitable for rapid Zn-ion reversibility. In this work, V-intercalated MoS2 (V-MoS2) nanomaterials were prepared by using a simple one-step hydrothermal method. The unique layered structure and large interlayer of the prepared nanomaterials could effe...
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