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, it is assumed that all material properties are constant, the solute diffusivity in the solid is neglected, thermal diffusion coefficients of the solid and liquid are equal, and the melt flow is incompressible [5...J. Cent. South Univ. Technol. (2011) 18: 1780-1788 DOI: 10.1007/s11771-011-0902-4 Simulation of faceted dendrite growth of non-isothermal alloy in forced flow by phase field method CHEN Zhi(陈志)1, HAO......
demonstrated that geo-material is a kind of nonlinear material which generally obeys non-associated flow rule [17]. Some scholars have conducted preliminary studies on the tunnel stability problems under...J. Cent. South Univ. (2017) 24: 2940-2950 DOI: https://doi.org/10.1007/s11771-017-3708-1 Energy analysis of rock plug thickness in karst tunnels based on non-associated flow rule and nonlinear......
形激活能为209.84 kJ/mol.随着热变形温度的升高和应变速率的减小,合金中的主要软化机制逐步由动态回复转变为动态再结晶. 关键词:Al-Mn-Mg-Cu-Ni合金；热压缩变形；流变应力；显微组织 中图分类号:TG 146.21 文献标识码:A Flow behavior and microstructure of Al-Mn... on Gleeble?1500 system. The relationships between flow stress and deformation temperature as well as strain rate were analyzed, and the deformation activation energy was calculated. The microstructures......
Microstructure and Flow Stress of Mg-12Gd-3Y-0.5Zr Magnesium Alloy马少杰1,LIU Ying2,DONG Xuehua3,张新平21. School of Mechanical Engineering, Nanjing University of Science and Technology2. School of Material Science and Engineering, Nanjing University of Science and Technology3. College of Science, Nanjing University of Science and Technology摘 要: and thermally activated softening mechanisms play important roles in the plastic deformation[10]. Consequently, WE91 alloy belongs to a material with positive strain rate sensitivity.
3.2 Flow stress model...]. ZENER and HOLLOMON proposed that a material flow stress model could be expressed as a function of strain, strain rate and temperature, and the relationship of temperature and strain rate could......Establishment and application of flow stress models of Mg-Y-MM-Zr alloy
来源： 《中国有色金属学报(英文版)2011年第4期》——马鸣龙 李兴刚 李永军 何兰强 张奎 王献文 陈丽芳
applications developed at the Industrial Materials Institute[5]. Simulation results with the two phase mixture model are depicted in Fig.5 where the flow of the semi-solid material is shown... fraction near the billet walls. This "skin" is then carried away by the flow. In the early stages, the skin material accumulates on the diaphragm wall, as shown in Fig.5(b). Part of the skin......
ARTICLE J. Cent. South Univ. (2019) 26: 1294-1305 DOI: https://doi.org/10.1007/s11771-019-4088-5 Flow and natural convection heat transfer characteristics of non-Newtonian nanofluid flow bounded... GmbH Germany, part of Springer Nature 2019 Abstract: The main goal of this paper is to investigate natural convective heat transfer and flow characteristics of non-Newtonian nanofluid streaming between......
Effects of argon gas flow rate and guide shell on oxygen concentration in Czochralski silicon growthREN Bingyan ZHAOLong,ZHAO Xiuling, WANG Huixian, CAO Zhongqian, ZHU Huimin,and FU Hongbo School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China Hebei Ningjin Jinglong Semiconductor Factory, Ningjin 055550, China Yunnan Semiconductor Device Factory, Kunming......
J. Cent. South Univ. (2012) 19: 1791-1795 DOI: 10.1007/s11771-012-1209-9 Synthesis and electrochemical performance of Li2Mg0.15Mn0.4Co0.45SiO4/C cathode material for lithium ion batteries HU Chuan-yue(胡传跃), GUO Jun(郭军), LI Si-jun(李四军), PENG Yang-xi(彭秧锡), WEN Jin(文瑾) Department of Chemistry and Material Science,Hunan Institute of Humanities, Science and Technology, Loudi 417000, China ? Central......
temperature of 350-500 ℃. Key words: 5083 aluminum alloy; hot compression; flow stress; dynamic material parameter; constitutive model 在金属热加工过程中,材料流变应力因微观组织的变化而产生变化,流变应力将影响加工设备载荷与能耗,准确的流变应力本构模型(CM)可为加工设备的选...)05-1072-08 Constitutive model of 5083 aluminum alloy based on dynamic material parameters DAI Qingsong1, DENG Yunlai1, OU Shisheng1, FU Ping2 (1. School of Materials Science and Engineering, Central......
