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| 1 | Atomic and electronic basis for the serrations of refractory high-entropy alloys显示文摘Refractory high-entropy alloys present attractive mechanical properties,i.e.,high yield strength and fracture toughness,making them potential candidates for structural applications.Understandings of atomic and electronic interactions are important to reveal the origins for the formation of high-entropy alloys and their structure−dominated mechanical properties,thus enabling the development of a predictive approach for rapidly designing advanced materials.Here,we report the atomic and electronic basis for the valence−electron-concentration-categorized principles and the observed serration behavior in high-entropy alloys and highentropy metallic glass,including MoNbTaW,MoNbVW,MoTaVW,HfNbTiZr,and Vitreloy-1 MG(Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5)).We find that the yield strengths of high-entropy alloys and high-entropy metallic glass are a power-law function of the electron-work function,which is dominated by local atomic arrangements.Further,a reliance on the bonding-charge density provides a groundbreaking insight into the nature of loosely bonded spots in materials.The presence of strongly bonded clusters and weakly bonded glue atoms imply a serrated deformation of high-entropy alloys,resulting in intermittent avalanches of defects movement. | William Yi Wang Shun Li Shang Yi Wang Fengbo Han Kristopher A.Darling Yidong Wu Xie Xie Oleg N.Senkov Jinshan Li Xi Dong Hui Karin A.Dahmen Peter K.Liaw Laszlo J.Kecskes Zi-Kui Liu | 2017 | npj Computational Materials2017，，1： | 3 |
| 2 | Static recrystallization simulations by coupling cellular automata and crystal plasticity finite element method using a physically based model for nucleation显示文摘 | Fengbo Han Bin Tang Hongchao Kou Liang Cheng Jinshan Li Yong Feng | 2014 | Journal of Materials Science2014，，8： | 1 |
| 3 | Cellular automata modeling of static recrystallization based on the curvature driven subgrain growth mechanism显示文摘 | Fengbo Han Bin Tang Hongchao Kou Jinshan Li Yong Feng | 2013 | Journal of Materials Science2013，，20： | 1 |
| 4 | Research on the Path of Improving the Efficiency of Urban Community Governance from the Perspective of Collaborative Governance:A Case Study of Daqing City,China显示文摘Under the background of“co-construction,co-governance,and sharing,”the role of the grassroots level is becoming increasingly important.In the past,the governance body was single with blocked information,and the inefficient governance mode required gradual transformation.In order to achieve collaborative governance and break through the obstacles in grassroots governance,the key lies in how to play the role of the community,coordinate the relationship between citizens and the community,and allow the community to better play the role of grassroots governance.Under the guidance of the concept of collaborative governance and combined with relevant data,this paper discusses the problems and current situation of community governance in Daqing City,China,explores the path to improve the efficiency of urban community governance,and puts forward relevant constructive suggestions to better realize the role of community in grassroots governance. | Fengbo Han | 2024 | Journal of Contemporary Educational Research2024，8，1： | 0 |
| 5 | Effects of subgrain size and static recrystallization on the mechanical performance of polycrystalline material: A microstructure-based crystal plasticity finite element analysis显示文摘In this paper, the effects of subgrain size and static recrystallization on the mechanical performance of polycrystalline material were investigated using a microstructure-based crystal plasticity finite element(CPFE) model. Firstly, polycrystalline microstructures with different mean subgrain sizes were prepared using simple assumption based on experimental observations, and intermediate microstructures during static recrystallization(SRX) were simulated by a cellular automata model adopting curvature driven grain/subgrain growth mechanism. Then, CPFE method was applied to perform stress analysis of plane strain tension on these virtual microstructures. The results show that the subgrains inside pre-existing grains have an effect on the heterogeneity of the stress distributions. The average stress decreases with increasing the mean subgrain radius. As grain/subgrain grows during SRX, the average stress also decreases. It can be deduced that well-defined and finer subgrain structure may strengthen the polycrystalline material, while grain/subgrain growth during SRX process will degrade the strength. | Fengbo Han Bin Tang Hongchao Kou Jinshan Li Yong Feng | 2015 | Progress in Natural Science:Materials International2015，25，1： | 0 |
| 6 | Forward-Secure Digital Signature Scheme with Tamper Evidence显示文摘Based on the definition of tamper evidence,the authors define a new notion of tamper evidence forward secure signature scheme (TE-FSig),and propose a general method to build a TE-FSig scheme. Based on this method,they also give out a con-crete instance. A TE-FSig scheme is constructed by the standard signature scheme,forward secures signature scheme and the ag-gregate signature scheme. It has an additional property of tamper evidence besides the property of forward secure,which can detect the time period when the key is exposed. In the standard model,the scheme constructed in the paper is proved to satisfy the prop-erties of forward secure,strong forward tamper-evidence secure,and strongly unforgeable under the chosen-message attack. | JIANG Han XU Qiuliang LIN Fengbo | 2008 | Wuhan University Journal of Natural Sciences2008，13，5： | 0 |
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