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, Changsha 410083, China) Abstract: A model was developed to account for the size, shape and structure dependent cohesive energy of metallic nanoparticles. The cohesive energies of V, Cr, Nb, Mo, Ta, W and Fe were calculated. The results show that the cohesive energy of nanoparticles of bcc structure is the same as that of fcc structure at the critical size and specific shape. When the nanoparticle......
Numerical simulation on size effect of copper with nano-scale twins WU Bo1, ZOU Na2, TAN Jian-song1, WANG Jian-ping1, PANG Ming1, HU Ding-yun1 1. Engine Engineering Center, China..., such as grain size, elastic modulus, plastic strain hardening exponent, initial yield stress, as well as twin lamellar distribution, which may contribute to size effects of twin layers in Cu polycrystalline......
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at prebaked anodes on bubble elimination in aluminum reduction cellYANG Shuai, ZHANG Hong-liang, XU Yu-jie, ZHANG He-hui, ZOU Zhong, LI Jie, LAI Yan-qing(School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China)Abstract:The anode gas induced bubble-electrolyte flow fields around a prebaked carbon anode with slots in aluminum reduction cell were calculated by using......
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EFFECT OF INITIAL GRAIN SIZE ON STATIC RECRYSTALLIZA-TION SOFTENING IN Cr STEEL USING STRESS RELAXATION TECHNIQUE A.R.Morgridge1 (1.Mechanical Engineering Dept. of University of Ibadan, Ibadan, Nigeria) Abstract:Effect of initial grain size (I.G.S.) on static recrystallization softening in Cr steel(0.77wt.% CR) has been investigated through the use of interrupted hot compressiontests......
by the acceleration difference between the bubble and the electrolyte. Besides, we used an equivalent diameter to represent the bubble size in the calculation, because the gas bubbles were observed to be non... and detachment. Since the slot promotes the bubble movement, the bubbles release frequency in the cell with the new type anode is higher and the bubble size is smaller, which could effectively reduce......
Dependence of Effective Anisotropy on Grain Size in Nanocrystalline Nd2Fe14B Hard Magnetic Material GAO Ruwei1,FENG Weicun1,Sun Guangfei3,Zhu Minggang2,HAN Guangbing1,Li Wei2 (1.School of Physics..., the partial exchange-coupling interaction model was established and the dependence of effective anisotropy constant Keff on grain size was investigated. Calculation results reveal that the exchange......
Reverse-transformation austenite structure control with micro/nanometer sizeHui-bin Wu1,2,Gang Niu1,2,Di Tang1,21. Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing摘 要:To control the reverse-transformation aus......
Effect of graphite particle size on wear property of graphite and Al2O3 reinforced AZ91D-0.8%Ce composites ZHANG Mei-juan(张美娟), LIU Yong-bing(刘勇兵), YANG Xiao-hong(杨晓红), AN Jian(安 健), LUO Ke... property of the composites, were performed under the condition of constant contents of graphite particles and Al2O3 short fibers. The results reveal that the grain size of the composites changes less when......