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噴流混合急冷法による過包晶Al-Cr合金の複合層の形成機構

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Title: 噴流混合急冷法による過包晶Al-Cr合金の複合層の形成機構
Other Titles: Formation mechanism of composite layer in hyperperitectic Al-Cr alloy ingot produced by injection quenching
Authors: 大参, 達也1 Browse this author →KAKEN DB
上田, 誠2 Browse this author
工藤, 昌行3 Browse this author
Authors(alt): Ohmi, Tatsuya1
Ueda, makoto2
Kudoh, Masayuki3
Keywords: jet mixing
rapid cooling
intermetallic compound
crystallization
solidification structure
Issue Date: 25-Oct-1997
Publisher: 日本鋳造工学会
Journal Title: 鋳造工学
Journal Title(alt): Journal of Japan Foundry Engineering Society
Volume: 69
Issue: 10
Start Page: 822
End Page: 827
Publisher DOI: 10.11279/jfes.69.822
Abstract: In order to examine the formation mechanism of the double composite layer which occasionally forms in the Al-transition metal alloy pipes produced by Centrifugal Duplex Casting, a model experiment named “Injection Quenching” has been executed. In this experiment, a hyperperitectic Al-Cr alloy melt (the jet melt) was injected into a molten aluminum (the bulk melt) to be cooled rapidly. The primary intermetallic compound particles sedimented to the bottom of the mold. The mixed alloy was furnace-cooled, and was quenched at a given temperature to freeze the distribution of the primary particles. The obtained results are summarized as follows : (1) The primary particles crystallized with “copious nucleation” in the jet melt constitute the fine composite layer. (2) After the formation of the fine composite layer, floating particles dispersed in the bulk melt grow and pile up on the fine composite layer to constitute the coarse composite layer.
Type: article
URI: http://hdl.handle.net/2115/74711
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大参 達也

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