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J. Cent. South Univ. (2018) 25: 936-948 DOI: https://doi.org/10.1007/s11771-018-3795-7 Method for secondary spring load equalization of railway vehicles with two-stage spring suspension: Modeling..., the secondary spring loads of railway vehicles must be well equalized. Due to the coupling interactive effects of these hyper static suspended structures, the equalization adjustment through shimming procedure......
Microstructure and mechanical properties of Mg-Zn-Gd-based alloys strengthened with quasicrystal and Laves phase LIU Yong(刘勇)1, YUAN Guang-yin(袁广银)1, 2, LU Chen(卢晨)1, DING Wen-jiang(丁文江)1 1.... The results indicate that MgZnCu Laves phase, which coexists with quasicrystal at grain boundary, emerges with the addition of copper element in Mg-Zn-Gd alloy. The strength of alloys exhibits......
℃/36 h. The as-cast microstructure contained obvious dendritic structure,and Cu is rich at grain boundary resulting in the precipitation of coarse bond shape mainly phase Al2Cu with some amount of Zn, Mg, Fe and Mn. After 530 ℃/36 h treatment, dendritic structure is eliminated, most of coarse bond shape secondary phases redissolve into matrix, and the grain size of the remained dot or stick shape......
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Phase Separation Process at Early Aging Stage of Ni42CrTiAl Jiao shao-yang1,XU Bing-she1,HU lan-qing1,WEI Ying-hui1,HOU Li-feng1 (1.Taiyuan University of Technology, Taiyuan, China) 摘要:Phase... decomposition is500℃. And the solid solution break into the lean and the rich areas, moreover the rich solute areas would have ordering arrangement to form ordering phase. 关键词:alloy; spinodal decomposition......
hydrocarbons to that of unconventional hydrocarbons, study of oil/gas secondary migration in nonmarine clastic reservoirs to that of marine carbonate reservoirs, and study of oil/gas-water two-phase behavior to oil-gas-water three-phase behavior, etc. (2) Based on a core slice model and an experiment of oil/gas-drive-water that simulates the secondary migration in the sandstone porous media......
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Phase field simulation of dendrite growth under convectionYutian DING,Xunfeng YUAN,Tingbiao GUO and Yong HU State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials,Lanzhou University of Technology,Lanzhou 730050,China摘 要:The phase-field model coupled with a flow field was used to simulate the solidification of pure materials by the finite......
of Mg7Zn3 phase, respectively[14-16]. Therefore, the solidification sequence of as-cast Mg-Zn-Y alloy is as follows: firstly the α-Mg crystallizes from the melt and then H phase secondary forms... shows that α-Mg first crystallizes from the melt at 647 ℃ and then H phase secondary forms at 563 ℃; the peritectic reaction of I-phase formation takes place nearly at 416 ℃; Mg7Zn3 phase last forms. 3......
