欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
摘要以Miedema二元合金生成热模型为基础，结合GeorgeKaptay提出的组元间相互作用参数表达式，计算了Mg、Zr、Er与Al之间随温度变化的相互作用参数；同时运用固体与分子经验电子理论（EET），计算了Al-4．5Mg-Zr-Er合金的价电子结构。根据计算结果和电镜研究综合认为，合金溶体中Zr、Er与Al原子之间存在强烈的交互作用，可以形成Al-Zr、Al-Er、Al-Zr-Er晶胞的偏聚区。随着凝固温度的降低，在界面前沿Al-Zr-Er原子会强烈偏聚形成Al3Er相，并可能形成Al3（ZrxTE1-x）复合相粒子作为异质形核的核心，对基体的晶粒起到强烈的细化作用，以提高铝镁合金的机械性能。
英文摘要：
Interaction parameter LA-B between components proposed by George Kaptay is introduced, then the interaction parameters between Al and Er, Zr, Mg are worked out based on Miedema model. Valence electron structures of Al-4.5Mg-Zr-Er alloys are also calculated by empirical electron theory（EET） in solid. According to calculated results and microscope observation, there exists strong interaction among Al,Zr and Er in the alloy solution, naturally from segregation region of Al-Zr, Al-Er and Al-Zr-Er cells. As the temperature decreases during the solidification process, in the interface Al3 Er and the possible Al3 （Zrx Er1-x） particles are formed by the strong segregation of Al-Zr- Er atoms, which act as heterogeneous nuclear that are firstly crystallized in alloy to make grains refine remarkably, and improve the mechanical properties of Al-Mg alloys.
同期刊论文项目
同项目期刊论文
Characterization and normalization factors of abiotic resource depletion for life cycle impact asses
Influence of Different Surfatants on Morphology of Single Crystal Ce2O(CO3)2·H2O and Formation Mecha
FEA modeling of effect of axial feeding velocity on strain field of rotary swaging process of pure m
Measurement of microemulsion zone and preparation of monodispersed cerium oxide nanoparticles by W/O
Facile synthesis of hydrophobic microporous silica membranes and their resistance to humid atmospher
Preparation and characterization of nanostructured Ni(OH)(2) and NiO thin films by a simple solution
Catalytically active gold nanoparticles confined in periodic mesoporous organosilica (PMOs) by a mod
3D finite element modeling of cogging-down rotary swaging of pure magnesium square billet - Revealin
Functionalization of periodic mesoporous organosilica with ureidopropyl groups by a direct synthesis
期刊信息
位置：