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was studied by an election scanning microscope. The results show that the microstructure of parent metal is the aging rolled structure by the α(Al) matrix, coarse first phase, secondary disperse strengthening... growth rate of it.Key words:high strength aluminum alloy; welded joint; secondary phase precipitate; fatigue crack propagation......
Observation of an EPIR Effect in Nd1-xSrxMnO3 Ceramics with Secondary PhasesS.S.Chen1,2,X.J.Luo2,D.W.Shi2,H.Li1,C.P.Yang21. School of Mathematics and Physics,Hubei Polytechnic University2. Faculty of Physics and Electronic Technology,Hubei University摘 要:<正>Nd1-xSrxMnO3(x = 0.3,0.5) ceramics containing a secondary phase are synthesized by high......
J. Cent. South Univ. (2021) 28: 1932-1945 DOI: https://doi.org/10.1007/s11771-021-4665-2 Effects of tensile temperatures on phase transformations in zirconium by molecular dynamics simulations... University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021 Abstract: The effects of tensile temperatures ranging from 100 K to 900 K on the phase transition of hexagonal close-packed......
is proposed, where the secondary transmission is multiplexed with both the primary transmission and the relay transmission. Specifically, the process of transmission is on a three-phase time-switching... J. Cent. South Univ. (2018) 25: 2626-2640 DOI: https://doi.org/10.1007/s11771-018-3941-2 Bidirectional secondary transmissions with energy harvesting in cognitive wireless sensor networks TANG Kun......
J. Cent. South Univ. (2019) 26: 905-915 DOI: https://doi.org/10.1007/s11771-019-4059-x Train driver protection under secondary impact WANG Wen-bin(王文斌), ZHOU He-chao(周和超), ZHAN Jun(詹军) Institute... structural is established based on the finite element method. The secondary impact between train driver and control desk is fully analysed and two measures are proposed to reduce the driver injury severity......
Macro-microscopic morphology and phase analysis of TiAl-based alloys sheet fabricated by EB-PVD method ZHANG De-ming(章德铭)1, CHEN Gui-qing(陈贵清)1, HAN Jie-cai(韩杰才)1, ZHANG Xing-hong(张幸红)1, YAO... was fabricated successfully by using electron beam-physical vapor deposition(EB-PVD) method. The microscopic morphology and phase composition of specimens in various states were analyzed by atomic......
alloy. 3.2 Electron microscope microstructures and phase changes Fig.3 shows the secondary electron SEM images of the samples hot pressed at 1 250 ℃ for 0.5 h from the 10 h, 20 h and 40 h ball milled... Effect of ball milling time on microstructure and properties of Laves phase NbCr2 alloys synthesized by hot pressing XIAO Xuan(肖 璇)1, 2, LU Shi-qiang(鲁世强)1, HU Ping(胡 平)1, HUANG Ming-gang(黄铭刚)1......
Tensile fracture of as-cast and hot rolled Mg-Zn-Y alloy with long-period stacking phase WANG Bai-shu(王柏树)1, 2, XIONG Shou-mei(熊守美)1, LIU Yong-bing(刘勇兵)3 1. State Key Laboratory of Automotive... (LPS) phase. Tensile tests of Mg97Zn1Y2 alloy in comparison with pure Mg were conducted. The fracture morphologies of the tensile specimens were characterized and the microstructures near fracture......
Effects of secondary precipitation on recrystallization in Co-base superalloy DZ40M ZHAO Yang(赵 阳), WANG Lei(王 磊), YU Teng(于 腾), SONG Xiu(宋 秀) Key Laboratory for Anisotropy and Texture... on the recrystallization of directionally solidified cobalt-base superalloy DZ40M. It is found that the secondary M23C6 precipitation influences the size and shape of the recrystal grains. When the annealing......
Enhancement of secondary emission property of molybdenum cathode co-doped La_2O_3 and Y_2O_3 GAO Fei1,WANG Jinshu1,REN Zhiyuan1,LIU Wei1,YANG Fan1,ZHOU Meiling1 (1.The Key Lab of Advanced Functional Materials,Ministry of Education China,School of Materials Science and Engineering,Beijing University of Technology,Beijing 100022,China) Abstract:La_2O_3 and Y_2O_3 co-doped Mo secondary emitters......