详细信息
The Formation and Characterization of the Primary Mg2Si Dendritic Phase in hypereutectic Al-Mg2Si Alloys ( SCI-EXPANDED收录 EI收录) 被引量:6
文献类型:期刊文献
英文题名:The Formation and Characterization of the Primary Mg2Si Dendritic Phase in hypereutectic Al-Mg2Si Alloys
作者:Qin, Qingdong Li, Wei
第一作者:秦庆东
通信作者:Qin, QD[1];Qin, QD[2]|[14440b8f0a27c8b88f113]秦庆东;
机构:[1]Guizhou Inst Technol, Dept Mat & Met Engn, 1 Caiguan Rd, Guiyang 550003, Peoples R China;[2]2011 Special Funct Mat Collaborat Innovat Ctr Gui, 1 Caiguan Rd, Guiyang 550003, Peoples R China;[3]Zhengzhou Technol Coll, Dept Mat Engn, 81 Zhengshang Rd, Zhengzhou 450041, Peoples R China
第一机构:贵州理工学院材料与冶金工程学院
通信机构:corresponding author), Guizhou Inst Technol, Dept Mat & Met Engn, 1 Caiguan Rd, Guiyang 550003, Peoples R China;corresponding author), 2011 Special Funct Mat Collaborat Innovat Ctr Gui, 1 Caiguan Rd, Guiyang 550003, Peoples R China.|贵州理工学院材料与冶金工程学院;贵州理工学院;
年份:2016
卷号:57
期号:2
起止页码:85-90
外文期刊名:MATERIALS TRANSACTIONS
收录:;EI(收录号:20160801991991);Scopus(收录号:2-s2.0-84958568172);WOS:【SCI-EXPANDED(收录号:WOS:000372671200001)】;
基金:This work is supported by The National Natural Science Foundation of China (51564005, 51465009), The National Natural Science Foundation of Guizhou Province (Qian Ke He J[2015]2058), The High Qualified People Starting Foundation of GIT (XJGC20140603) and The Scientific & Technological Innovation Talent Team of Guizhou Province (Qian Ke He Talent Team [2015]4008).
语种:英文
外文关键词:crystal morphology; formation; hypereutectic Al-Mg2Si alloys; Mg2Si dendrite
摘要:The formation of a primary Mg2Si dendritic phase in hypereutectic Al-Mg2Si alloys is investigated using melt-spinning techniques. The results indicate that, at the initial stage, the primary Mg2Si crystal rapidly grows in a non-faceted manner, forming a smooth dendritic or fluted structure. As the undercooling of the process is varied, the growth behavior transitions from non-faceted to faceted. Subsequently, Mg2Si crystals grow preferentially along the [100] direction producing growth hillocks and forming stable branches. The morphology of the primary Mg2Si crystal exhibits angular facets. Furthermore, if V-[100]/V-[111] = root 3 the crystal grows as a perfect octahedral dendrite (the dendrite is composed of octahedrons), and if V-[100]/V-[111] < root 3 the crystal grows with imperfect octahedral subunits. Lastly, the growth process of the primary Mg2Si dendrites is discussed.
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