Formation of feathery crystals depending on the solidifying conditions in Al-Mg alloys.
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概要
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The solidifying conditions for formation of feathery crystal in Al-Mg alloys were investigated by using unidirectional solidification and the new solidifying method "Graphite-Mold Submerging (GMS) process". This was able to control solidifying rate R and temperature gradient G respectively and its prominent feature was to submerge melt-filled mold heated at casting temperature into water bath directly. In the R-G diagram, the formation zone of feathery crystal in each composition of Al-Mg alloys was enclosed with suitable R and G respectively and its zone was shown as triangles between columnar and granular crystal zone. In view of relationship between G/R and R on the formation zone of each crystal structure, the feathery crystal zone overlapped columnar's and decreased continuously with increaing R. Therefore it is considered that feathery crystal is the peculiar structure belonging to columnar crystal.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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