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Rotation friction extrusion process towards high-performance Mg-Li matrix composites enhanced by FeCoNiCrCu high entropy alloy 认领 引用
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作者 Yuqing MAO Jinkai WANG +5 位作者 Qing HUANG Tengfei DU Shaopeng LIU Zhiwei QIN Xiao SONG Liming KE 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第4期668-679,共12页
To pursue wide applications of Mg-Li alloys in aerospace field,bringing in reinforcement phases reasonably and manufacturing efficiently have become paramount.Herein,a novel rotation friction extrusion process was pro... To pursue wide applications of Mg-Li alloys in aerospace field,bringing in reinforcement phases reasonably and manufacturing efficiently have become paramount.Herein,a novel rotation friction extrusion process was proposed to fabricate Fe Co Ni Cr Cu high entropy alloy reinforced Mg-Li matrix composites,which were enhanced by newly formed nano-sized Al Cu Mg phase particles.The grain size of Mg-Li matrix composites was 4.19μm.Meanwhile,a 69.03 nm thickness amorphous layer was obtained,which was composed of amorphous and nanocrystalline structure.The maximum tensile strength reached 201.3 MPa,which was improved by 43.9%compared with LAZ933 Mg-Li alloy.It can be attributed to fine grain strengthening and dispersion strengthening,which resulted from dynamic recrystallization in Mg-Li alloy and Cu segregation from the interior of high entropy alloy.This work shows a novel processing and original reinforcement phase,providing a peculiar way to fabricate Mg-Li matrix composites. 展开更多
关键词 High entropy alloy Mechanical properties Mg-Li matrix composites Rotation friction extrusion Strengthening mechanism
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Simulations of scattered neutrons for the time-of-flight enhanced diagnostics(TOFED)neutron spectrometer on EAST 认领 引用
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作者 Jiaqi SUN Zhimeng HU +13 位作者 Lijian GE Yimo ZHANG Tengfei DU Xingyu PENG Zhongjing CHEN Xing ZHANG Giuseppe GORINI Massimo NOCENTE Marco TARDOCCHI Liqun HU Guoqiang ZHONG Baonian WAN Xiangqing LI Tieshuan FAN 《Plasma Science and Technology》 SCIE EI CAS CSCD 2020年第8期27-33,共7页
The time-of-flight enhanced diagnostics(TOFED)neutron spectrometer has been installed in TOFED house,which is a newly-built neutron diagnostic lab outside the EAST experimental hall.The line of sight(LOS)of TOFED is d... The time-of-flight enhanced diagnostics(TOFED)neutron spectrometer has been installed in TOFED house,which is a newly-built neutron diagnostic lab outside the EAST experimental hall.The line of sight(LOS)of TOFED is defined by the collimator going through the 150 cm biological shielding wall,which can reduce background neutrons very effectively for the neutron spectral measurements.The Monte Carlo code MCNP5 is used in the simulations to characterize collimation effects and the radiation safety of the new house.The collimator makes neutron flux almost fully perpendicular to S 1 detectors.In addition,the proportion of scattered neutrons in the LOS of the TOFED is obtained for the measured spectral data interpretation.The simulation results show that the TOFED house satisfies the requirement for the TOFED operations at EAST and gives a safe environment for personnel access during the EAST operation. 展开更多
关键词 EAST TOFED scattered components shielding efficiency
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