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compounds: experimental observations and their explanation [J]. J Less-Common Met, 1974, 35(1): 147-160. [39]Hubbard W N, Rawlins P L, Connick P A, et al. The standard enthalpy of formation of LaNi5.... The β-phase hydrides of LaNi5 are most stable when hydrogen atom capacity coating in the range of 6-7. Key words: LaNi5 hydride; geometry; electronic structure; heat of formation CLC number: TG111......
的铸件的微观组织呈现等轴球晶形貌,610℃时淬火试样的初生相晶粒平均直径为29 ?m,同时在缓慢冷却程中初生相α(Al)晶粒趋向于圆整并粗化. 关键词:半固态浆料；微观组织；热焓平衡；旋转磁场 中图分类号:TG 146.2; TG 249 文献标志码:A Semisolid slurry produced using enthalpy... of Technology, Dalian 116024, China; 4. Beijing General Research Institute for Non-ferrous Metals, Beijing 100088, China) Abstract: The semisolid slurry of A356 aluminum alloy was prepared using an enthalpy......
entropy alloys. Key words: high entropy alloy; solid solution; comprehensive atomic radius difference; mixing enthalpy; formation condition 1 Introduction The design criterion of traditional alloys has..., the atomic radius and mixing enthalpy are selected to study the phase formation law of multi-component alloy. Mixing enthalpy, macroscopic comprehensive reflection of the atomic intrinsic characteristic......
J. Cent. South Univ. (2018) 25: 2664-2676 DOI: https://doi.org/10.1007/s11771-018-3944-z Path planning for UAVs formation reconfiguration based on Dubins trajectory CHEN Qing-yang(陈清阳)1, LU Ya-fei... 2018 Abstract: Multiple UAVs are usually deployed to provide robustness through redundancy and to accomplish surveillance, search, attack and rescue missions. Formation reconfiguration was inevitable......
J. Cent. South Univ. (2017) 24: 1387-1395 DOI: 10.1007/s11771-017-3543-4 Three-dimensional formation keeping of multi-UAV based on consensus ZHU Xu(朱旭)1, ZHANG Xun-xun(张逊逊)1, YAN Mao-de(闫茂德)1, QU... of multiple vehicles. A three-dimensional formation keeping strategy for multiple unmanned aerial vehicles (multi-UAV) is proposed based on consensus, aiming at maintaining a specified geometric......
Studies on Standard Formation Enthalpies of Rare Earth Compounds by Using Structural Parameters YANG Feng1,FENG Lin2 (1.Wuhan Institute of Science and Technology, Wuhan 430073, China;2.School... P＝Σni=1Pi are defined. The standard formation enthalpies (ΔfHφm) of 74 species of rare earth compounds were studied with P, and the correlation coefficient is R＞0.94. The structural factors......
Formation and characterization of cerium conversion coatings on magnesium alloy YU Shenghai1,LI Lingjie1,LEI Jinglei1,PAN Fusheng3,JIANG Qiquan1,TIAN Yujing1 (1.College of Chemistry and Chemical... to improve the corrosion resistance of magnesium alloys. In this study, cerium conversion coatings formed on AZ31 magnesium alloy were characterized and the formation mechanism was discussed. X-ray......
probe microanalysis) scans at different locations along the cladding sheet and within the joint zone. Subsequently, the diffusion coefficients were used to predict the residue clad layer formation...; diffusion coefficient; aluminum alloy; brazed joint formation......
. The rationality of Miedema model is demonstrated, and the calculated data are good agreement with the experimental data. Key words: Miedema model; formation enthalpy; excess entropy; excess free-energy..., 42(5): 487-491. [12] Niessen A K, de Boer F R, Boom R, et al. Model predictions for the enthalpy of formation of transition metal alloys Ⅱ[J]. Calphad, 1983, 7(1): 51-70. [13] Saunders N, Rivlin V G......
J. Cent. South Univ. Technol. (2011) 18: 23-28 DOI: 10.1007/s11771-011-0653-2 Simulation of stray grain formation during unidirectional solidification of IN738LC superalloy LI Xiang-mei(李响妹)1... Abstract: The influence of casting parameters on stray grain formation of a unidirectionally solidified superalloy IN738LC casting with three platforms was investigated by using a 3D cellular......
