Heat-resistant Al-Ce alloy and preparation method and application thereof

The invention belongs to the technical field of heat-resistant alloys, and particularly relates to a heat-resistant Al-Ce alloy and a preparation method and application thereof. The heat-resistant Al-Ce alloy disclosed by the invention comprises 11 to 15 percent of Ce, 0.2 to 0.6 percent of Sc, 0.03...

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Bibliographische Detailangaben
Hauptverfasser: WU CHUANDONG, SHEN SHUAI, GAN ZHANGHUA, PU XINGLIAN, HUANG WEIMING
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention belongs to the technical field of heat-resistant alloys, and particularly relates to a heat-resistant Al-Ce alloy and a preparation method and application thereof. The heat-resistant Al-Ce alloy disclosed by the invention comprises 11 to 15 percent of Ce, 0.2 to 0.6 percent of Sc, 0.03 to 0.1 percent of Zr and the balance of Al. Scandium and zirconium are introduced to form an Al3 (Sc, Zr) phase with excellent thermal stability, and the Al3 (Sc, Zr) phase can effectively improve the mechanical property of the heat-resistant Al-Ce alloy by hindering dislocation motion; and coarsening of the eutectic phase Al11Ce3 can be effectively inhibited through segregation of a small amount of Sc and Zr elements on the interface. The eutectic phase Al11Ce3 is uniformly distributed by adopting a supergravity field solidification mode, the size of the eutectic phase Al11Ce3 is reduced, and the mechanical property of the alloy is improved. And an Al3 (Sc, Zr) phase is separated out through cold deformation and