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%IACS, the hardness increases from HV 96 to HV 146, and the area fraction of secondary phase reduces from 4.5% to 1.89%. While, DC homogenized sample has a higher hardness, a lower electric conductivity... words: 7B04 aluminum alloy; direct current; homogenization; hardness; secondary phase; elemental diffusion 1 Introduction 7B04 aluminum alloy has high strength, low density and good corrosion......
than that of pure Li-Ni ferrite, and increased in the range of 0.00≤x≤0.04, then decreased up to x=0.08, because of the formation of the secondary phase (GdFeO3). All samples were spheric particles...Structural Analysis and Magnetic Properties of Gd-Doped Li-Ni Ferrites Prepared Using Rheological Phase Reaction Method Li Liangchao1,Xu Feng1,Jiang Jing1 (1.Department of Chemistry, Institute......
J. Cent. South Univ. (2019) 26: 196-206 DOI: https://doi.org/10.1007/s11771-019-3993-y Bending performance of TRC-strengthened RC beams with secondary load under chloride erosion YU Yu-lin(余玉琳)1... concentration, the damage degree and the coupled effect of the environment and load on the bending performance of TRC-strengthened beams with a secondary load. The results showed that as the salt......
An optimization algorithm for locomotive secondary spring load adjustment based on artificial immunePAN Di-fu(潘迪夫), WANG Meng-ge(王梦格), ZHU Ya-nan(朱亚男), HAN Kun(韩锟) (School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China)Abstract:In order to control the locomotive wheel (axle) load distribution, a shimming process to adjust the locomotive secondary......
-shaped LPSO structure can refine the microstructures, and improve the secondary deforming ability. The size of β′ phase can be reduced by the acicular LPSO structures and it distributes dispersively... secondary deformation on microstructures and mechanical properties of Mg-6Gd-3.2Y-xZn-0.5Zr extruded sheetZHENG Liang1, LIU Chu-ming1, WANG Hong-hai2, WANG Song-tao3, WAN Ying-chun1, WANG Xiao1......
; secondary phase; microstructure; mechanical properties 1 Introduction As the lightest metallic structural material, magnesium alloys have received great attention in the last decade because...(Zn)/w(Y) ratio is less than 2, and the main secondary phase is W-phase (Mg3Zn3Er2). However, the main secondary phases in alloys 4, 5, 6 and 7 include the W-phase (Mg3Y2Zn3) and I-phase (Mg3Zn6Er1......
and discontinuous dissolution caused by severe plastic deformation lead to the coarsening of secondary phases particles and segregation at grain boundary. Partial secondary phase particles in Al-Zn-Mg-Cu alloy are refined and dispersed in aluminum matrix after the process of severe plastic deformation and solution aging, which demonstrates the decrease of secondary phase segregation at grain boundary......
and EDS spectra of as-cast and HPT deformation Al-Zn-Mg-Cu alloy 图4 不同条件下第二相变化图 Fig. 4 Change of secondary phase under different conditions 2.3 力学性能分析 大塑性变形过程中,合金中第二相回溶形成过饱和固溶体,与热处理.... Dissolution of secondary phase in novel Al-Zn-Mg-Cu alloy reduced by high pressure torsion LI Ping, DING Chun-hui, WANG Bo-xiao-tian, WU Guang-shan, XUE Ke-min (School of Materials Science and Engineering......
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the interaction between the cathode material and the electrolyte. Therefore, it can endure overcharge in the secondary lithium batteries, and achieve better electrochemical performances even when charged to 4.7 V and 4.9 V. Key words: spinel LiMn2O4; secondary lithium batteries; surface modification; LiF-coating 1 Introduction Spinel LiMn2O4 is a widely studied cathode material for secondary......