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A MODEL FOR BAINITIC TRANSFORMATION KINETICS WITHPARABOLIC NUCLEATION RATE Z.Liu1,K.F.Yao1,C.C.Liu1 (1.Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China) Abstract:Based on the assumptions of parabolic variation of nucleation rate versus time andtransformation kinetics depending mainly on nucleation rate, a different model forbainitic transformation kinetics......
the availability of the proposed method. Key words: dynamic recrystallization; cellular automaton method; response surface method; nucleation rate; parameter identification  ... working conditions. The nucleation rate is a key factor affecting the microstructural evolution during DRX. However, it is difficult to accurately determine the nucleation rate through theoretical......
Al8Fe4Nd phase was found shorter and the nucleation rate higher than those ofα-Al. The results indicate the nucleation of Al8Fe4Nd phase is heterogeneous and thedispersoids of Al8Fe4Nd form as primary...NUCLEATION BEHAVIOR OF Al8Fe4Nd PHASE IN RAPIDLY SOLIDIFIED AI-Fe-V-Si-Nd ALLOY H.Pang1,M.G.Zeng3,J.N.Deng3,Z.H.Jin1 (1.S henyang National Laboratory for Material Science, Institute of Metal......
, the nucleation/growth process of Ni-Fe binary alloy is 3-D instantaneous, and the growth rate of the previously formed nuclei increases with overpotential. However, at low overpotential, no distinguished..., and the growth rate of the previously formed nuclei increases with overpotential. However, at low overpotential, no distinguished nucleation current can be observed and crystal growth can occur without nucleation......
Surface modification of spherical LiNi1/3Co1/3Mn1/3O2 with Al2O3 using heterogeneous nucleation process YANG Zhi(杨 志), LI Xin-hai(李新海), WANG Zhi-xing(王志兴), ZHU Yong-jun(朱勇军) School...; Abstract: To improve the cycle stability at high voltage and high charge/discharge rate......
temperature Tp at a time step Δt. At the beginning of each time step, the supersaturation, the mean concentration of solute in the matrix liquid, the nucleation rate, the diffusional growth... be found from Fig.2 that the undercooling for nucleation increases with increasing cooling rate. This kind of relationship is dependent on the nucleation dynamics in which the occurrence......
rate. These results indicate that effects of gas content on formation of MC carbide can be observed in specimens solidified with low cooling rate, but such changes in MC carbide cannot be found when the cooling rate is high. 关键词:nucleation & growth; casting; directional solidification; [全文内容正在添加中] ......
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, the limiting temperature and strain rate conditions for cavity nucleation are related to the volume fraction spheroidized of lamellar alpha phase. NICOLAOU et al[19] have found that when the microstructure... Cavity nucleation during hot forging of Ti-6Al-2Zr-1Mo-1V alloy with colony alpha microstructure DONG Xian-juan(董显娟)1, 2, LU Shi-qiang(鲁世强)1, ZHENG Hai-zhong(郑海忠)1, LI Xin (李 鑫)1, OUYANG De-lai......
Nucleation and growth of high purity aluminum grains in directional solidification bulk sample without electromagnetic stirring ZHANG Jiao(张 佼)1, 2, SHU Da(疏 达)1, RAO Qun-li(饶群力)3... diffractometry. The results show that the nucleation points locate at the intersections of three adjacent grains. The lattice orientation of grains does not alter in the horizontal direction, but gradually......