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Effect of heat treatment on mechanical properties of thixoformed 7A09 aluminum alloy WANG Wei-wei(王卫卫), JIA Bin-bin(贾彬彬), LUO Shou-jing(罗守靖) School of Materials Science... in the substrate and the solution precipitated supersaturated elements are the main factors influencing the properties of the alloys. Key words: 7A09 aluminum alloy; heat treatment; mechanical property; semi......
J. Cent. South Univ. Technol. (2009) 16: 1028-1033 DOI: 10.1007/s11771-009-0170-8 Discrete element simulation of mechanical characteristic of conditioned sands in earth pressure balance shield... characteristic and strength characteristic of the conditioned sands in the earth pressure balance (EPB) tunneling. In the laboratory the conditioned sands were reproduced and the slump test and the direct......
Relationship between heat treatment and corrosion behaviour of Mg-3.0%Nd-0.4%Zr magnesium alloy CHANG Jian-wei(常建卫), GUO Xing-wu(郭兴伍), FU Peng-huai(付彭怀), PENG Li-ming(彭立明), DING Wen-jiang(丁文江... a more protective role than that of NK30-T4 and NK30-T6. Key words: Mg-Nd-Zr alloy; corrosion behaviour; heat treatment; potentiodynamic polarization; electrochemical impedance spectroscopy ......
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, with taking the heat transfer from shaft interior boundaries to airflow into account. These models are derived from fundamental equations of fluid dynamics and energy balance. Two typical thermal...J. Cent. South Univ. (2012) 19: 651-656 DOI: 10.1007/s11771-012-1052-z Analytical models for evaluating buoyancy-driven ventilation due to stack effect in a shaft considering heat transfer from shaft......
Trans. Nonferrous Met. Soc. China 20(2010) s768-s773 Microstructural evolution of Mg9AlZnY alloy with vibration in lost foam casting during semi-solid isothermal heat treatment...) and the microstructure of Mg9AlZnY alloy was analyzed. On this basis, the morphology and size of a-Mg grains fabricated by semi-solid isothermal heat treatment(SSIT) at 530 ℃ and 570 ℃ holding different time were studied......
J. Cent. South Univ. (2019) 26: 3140-3155 DOI: https://doi.org/10.1007/s11771-019-4242-0 Determination of initial cable force of cantilever casting concrete arch bridge using stress balance... to obtain reasonable initial cable force in construction stage. In this study, stress balance and influence matrix methods were developed to determine the initial cable force of cantilever casting concrete......
composites with equiaxed microstructure after heat treatment PAN Jin-qi(潘金启), ZHANG Wen-cong(张文丛), YANG Jian-lei(杨建雷),CHEN Wen-zhen(陈文振), CUI Guo-rong(崔国荣) School of Materials Science and Engineering... composites with network architecture were fabricated by hot press sintering (HPS) at 1100 °C for 1 h, and the quantitative relationships between phases and heat treatment temperatures were established......
:TF 821; O 441.4 文献标识码:A Simulation of heat balance in 5 kA grade aluminum reduction cell with inert anodes LI Jie, WANG Zhi-gang, ZHANG Hong-liang, LAI Yan-qing, XU Yu-jie (School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: The cell profile and heat balance of 5 kA grade aluminum reduction cell......
烧结工序能量平衡及节能诊断分析赵斌1,2,张志远3,冯俊小3,张玉柱0,梁海鹰4(1.河北省唐山市河北理工大学河北省现代冶金技术重点实验室2.北京市华北电力大学电站设备状态监测与控制教育部重点实验室3.北京科技大学 机械工程学院,北京 1000834.唐山钢铁股份有限公司 炼铁厂,河北唐山 063000)摘 要:为解决烧结工序能耗高的问题,根据能量守恒原理,对唐钢炼铁厂烧结机和环冷机进行了详细的能量平衡测试,通过对测试结果的分析,并结合生产设备及工艺特点,分析诊断了烧结工序的能源消耗状况.测试结果表明:烧结机排......
