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, 48: 4797-4811. [7] WOOD R F. model for nonequilibrium segregation during pulsed laser annealing [J]. Applied Physics Letters, 1980, 37: 302-304. [8] AZIZ M J. Model for solute redistribution during... model for non-equilibrium segregation during crystallization [J]. Journal of Crystal Growth, 2004, 271: 481-494. [12] GALENKO P. Solute trapping and diffusionless solidification in a binary system [J......
NON-EQUILIBRIUM SOLUTE SEGREGATION TO AUSTENITIC GRAIN BOUNDARY IN FERRUM-NICKLE ALLOY D.Y.Yu1,P.Wu1,X.L.He1 (1.Department of Material Physics, University of Science & Technology Beijing, Beijing 100083, China) Abstract:The development of non-equilibrium segregation of boron at grain boundaries in Fe-40%Ni alloy during continuous cooling process was experimentally observed with boronParticle......
Solute segregation in an Al2O3f/Al-4.5Cu alloy composite during solidification at different cooling ratesLIU Zhengand JING QingxiuFaculty of Material and Chemistry Engineering, Southern Institute...>An Al2O3f/Al-4.5Cu composite was made by squeeze casting. The solute segregation in the composite at different cooling rates was studied. The results indicate that the primary crystal of Al-4.5Cu......
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Effect of atomic structure on migration characteristic and solute segregation of ordered domain interfaces formed in Ni75AlxV25-x ZHANG Ming-yi1, CHEN Zheng1, WANG Yong-xin1, MA Guang2, LU Yan-li1... in Ni75AlxV25-x alloys were simulated, and the effects of atomic structure on the migration characteristic and solute segregation of interfaces were studied. It is found that the migration ability is related......
elements, segregation of W is the most serious. The segregation of elements may result from the differences in surface tension, atom radius and electron configuration between solvent and solute. The element... in surface tension, atom radius and electron configuration between solvent and solute are, the more significant the segregation is. Fig.4 Surface segregation of Cr, Co and W at 1823 K 4 Conclusions 1......
be fabricated by melt-spinning method. Both the distribution of Mg and Al elements in rapid solidified alloy are homogeneous without the occurrence of solute segregation. Key words: magnesium alloy; non-equilibrium solidification; grain refinement; solute segregation 镁合金作为最轻的金属结构材料,具有密度低,比强度高,铸造性能好,减震性和抗磁性好以及尺寸稳定等一系列综合优点,被誉为21世纪的绿色工程材料,在汽车和电子等领域具有广泛的应用前景[1-3].然而,由于大多数镁合金属于密排六方结构,滑移系少,室温塑性能力差,加之其电负性弱,三......
Effects of Ca(Y)-Si modifier on interface morphology and solute segregation during directional solidification of an austenite medium Mn steelGaofei Liang, Zhenming Xu, and Jianguo Li School... additions of Ca, Y, Si were directionally solidified using the vertical Bridgman method to study the effects of Ca(Y)-Si modifier on the solid-liquid (S-L) interface morphology and solute segregation......
定向凝固DZ125合金的溶质分配系数及偏析行为的研究闵志先1,沈军1,冯周荣1,王灵水1,刘林1,傅恒志1(1.陕西省西安市西北工业大学凝固技术国家重点实验室)摘 要:采用定向凝固技术结合液淬法对DZ125合金平界面和枝晶生长条件下溶质的偏析行为进行了研究,通过EPMA定量测定γ基体中各元素的溶质含量和淬火平界面两侧固相和液相中的溶质含量,分别获得了溶质再分配后固相中的溶质分布状态及溶质分配系数.结果表明,平界面生长条件下,液相中的熔体流动使溶质再分布始终处于非稳态.Al,Ti,Ta,Mo和Ni元素的溶质分配系......
because of the solute drag effect, but the degree of segregation or depletion of alloy elements is changed.Key words:Ni75AlxV25?x alloys; microscopic phase-field; ordered domain interface; order-disordered interface; solute segregation......
