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Title: Al-Ni-Si系複層遠心鋳造管の複合硬化層形成と耐摩耗性
Other Titles: Formation and wear resistance of composite - hardened layer in centrifugally cast Al-Ni-Si duplex pipes
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
井口, 学4 Browse this author
Authors(alt): Ohmi, Tatsuya1
Ueda, Makoto2
Kudoh, Masayuki3
Iguchi, Manabu4
Keywords: centrifugal casting
aluminum alloy
intermetallic compound
wear resistance
Issue Date: 25-Apr-2005
Publisher: 日本鋳造工学会
Journal Title: 鋳造工学
Journal Title(alt): Journal of Japan Foundry Engineering Society
Volume: 77
Issue: 4
Start Page: 233
End Page: 239
Publisher DOI: 10.11279/jfes.77.233
Abstract: The solidification structure, hardness and wear resistance of Al-Ni-Si duplex pipes produced by two-step centrifugal casting were investigated. In this process, two kinds of molten metals, i.e., first melt and second melt with higher liquidus temperature, were cast in sequence at a given interval into a rotating mold of a centrifugal caster. Al-12mass%Si alloy and Al-30mass%Ni alloy were used as the first melt and the second melt respectively. The second melt was cast after the solidified shell of the first melt had formed. The centrifugally cast pipes consisted of an outer layer and a composite layer containing fine Al-Ni intermetallic crystals. The origin of the outer layer was a survived part of the solidified shell of the first melt. The composite layer consisted of one or two layer(s). When the volume of the remelted part of the solidified shell was large, all the second melt mixed into the first melt and the resultant mixed melt formed the composite layer. On the other hand, the composite layer originated only in the second melt when the temperature of the solidified shell was low. In the intermediate case, the composite layer consisted of these two types of layers. The composite layer which formed from the mixed melt exhibited higher wear resistance than the other type of layer despite its lower hardness.
Type: article
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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