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Effect of grain size on corrosion behavior of electrodeposited bulk nanocrystalline Ni QIN Li-yuan(秦丽元), LIAN Jian-she(连建设), JIANG Qing(蒋 青) Key Laboratory of Automobile Materials of Ministry... grain sizes (from 16 nm to 2 mm) were fabricated by direct current electrodeposition. Effect of grain size on the electrochemical corrosion behavior of these Ni deposits in different corrosion media......
Grain size refinement of magnesium composite alloys by addition of B2O3 BU Le-ping(卜乐平)1,2, S. TANAKA1, M. TSUSHIDA3, S. ANDO3, H. TONDA3 1. Graduate School of Science and Technology,Kumamoto... on the microstructure, were studied measuring the change of grain size and microhardness of the materials, discussing the change of grain size, morphology and distribution. The results show that adding 3% or 6......
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......
Effect of thickness and grain size on material behavior in micro-bending SHAN De-bin(单德彬), WANG Chun-ju(王春举), GUO Bin(郭 斌), WANG Xin-wei(汪鑫伟) School of Materials Science...; Abstract: Micro-bending tests were performed to investigate effects of thickness and grain size on material behavior......
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......
J. Cent. South Univ. Technol. (2008) 15: 1-5 DOI: 10.1007/s11771-008-0001-3 Prediction of grain size for large-sized aluminium alloy 7050 forging during hot forming YI You-ping(易幼... is the most effective way to increase the effective strain and refine the microstructure of the billet. As the forging steps increase, the effective strain rises significantly and the average grain size reduces......
MODELING OF AUSTENITE GRAIN SIZE IN LOW-ALLOY STEEL WELD METAL Y.S.Wang1,A.G.Huang1,Z.Y.LI1,Q.Hu1,J.G.Xiong1 (1.School of Materials Science & Engineering,Huazhong University of Science and Technology,Wuhan 430074,China) Abstract:The size of austenite grain hassignificant effects on components and proportions of various ferrites in low-alloy steel weld metal.Therefore,it is important......
described. The effects of sintering temperature and time, and alloy powder size and its distribution on grain growth process were analyzed. Hence, possible grain growth mechanisms in these magnets were qualitatively discussed. The Nd2Fe14B grain growth proceeded at quite a high rate in the initial 0~1 h of sintering and from then onwards the grain growth rate decreased. A large average particle size......
, GB migration driven by inter-GB reaction can take place. A critical grain size is identified, below which the inter-GB reaction becomes strong enough to trigger GB motion, which accelerates rapidly and leads to annihilation of the grain boundaries. The critical size is found to be 16 atomic radii. A "through intermediate grain mechanism" is identified for the nano-grain boundary motion observed......
