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複合鋳込み遠心鋳造法により作製したAl-Cr合金傾斜機能材の硬さと耐摩耗性
Title: | 複合鋳込み遠心鋳造法により作製したAl-Cr合金傾斜機能材の硬さと耐摩耗性 |
Other Titles: | Hardness and Wear Resistance of Functionally Graded Hyperperitectic Al-Cr Alloys Produced by Centrifugal Duplex Casting |
Authors: | 大参, 達也1 Browse this author →KAKEN DB | 木村, 欣晃2 Browse this author | 伊藤, 洋一3 Browse this author | 松浦, 清隆4 Browse this author →KAKEN DB | 工藤, 昌行5 Browse this author |
Authors(alt): | Ohmi, Tatsuya1 | Kimura, Yoshiaki2 | Itoh, Youichi3 | Matsuura, Kiyotaka4 | Kudoh, Masayuki5 |
Keywords: | centrifugal casting | functionally graded materials | solidification structure | hardness | wear resistance | aluminum alloy | intermetallic compound |
Issue Date: | Apr-1999 |
Publisher: | 日本金属学会 |
Journal Title: | 日本金属学会誌 |
Journal Title(alt): | Journal of the Japan Institute of Metals |
Volume: | 63 |
Issue: | 4 |
Start Page: | 429 |
End Page: | 434 |
Publisher DOI: | 10.2320/jinstmet1952.63.4_429 |
Abstract: | Centrifugal Duplex Casting (CDC process) is applicable to produce an aluminum-cast pipe with an in-situ composite layer containing fine intermetallic crystals. In this process, two kinds of molten metal, i.e. molten aluminum (the first melt) and molten Al-Cr alloy with a higher liquidus temperature (the second melt), are cast in sequence at a given interval into the rotating mold of a centrifugal caster.
In the present paper, the solidification structure, hardness and wear resistance of Al-Cr alloy pipes produced by the CDC process were investigated. In the composite layer, there was a slightly graded hardness distribution: the hardness decreased gradually as the distance from the outer periphery of the pipe increases. The profile of hardness resembled that of the volume fraction of intermetallic crystals. The hardness and wear resistance of the outside surface of the CDC pipes increased as the chromium concentration of the second melt or the rotation speed of the mold increased.
The pipes with coarse intermetallic crystals, which were produced by the conventional centrifugal casting process, were fractured in the course of wear tests. On the other hand, the CDC pipes exhibited homogeneous-wear behavior because of the refinement of intermetallic crystals. |
Relation: | https://www.jstage.jst.go.jp/article/jinstmet1952/63/4/63_4_429/_article/-char/ja/ |
Type: | article |
URI: | http://hdl.handle.net/2115/74673 |
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)
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Submitter: 大参 達也
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