Development of quaternary Ir-Ta-Ni-Al refractory superalloys

Xihong Yu; Yoko Yamabe-Mitarai; Yoshikazu Ro; Yuefeng Gu; Hiroshi Harada

doi:10.1016/S1359-6462(99)00112-8

Development of quaternary Ir-Ta-Ni-Al refractory superalloys

Xihong Yu, Yoko Yamabe-Mitarai, Yoshikazu Ro, Yuefeng Gu, Hiroshi Harada

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

The microstructure and compressive properties of quaternary refractory superalloys from two binary alloys which were composed of face centered cubic (fcc)/L1₂ coherent structures were examined. Ir-Ta and Ni-Al alloys were mixed in different proportions to form a quaternary superalloys. A three-phase equilibrium exists in the alloys including 25% and 75% Ir-based alloys, consisting of two kinds of L1₂ (Ir₃Ta and Ni₃Al types) and fcc structure. A four-phase equilibrium exists in the alloy including 50% Ir-based alloy after heated at 1300 °C for 168 hours consisting of two kinds of L1₂, fcc, and B2 structures. At 1200 °C, these alloys exhibited higher yield stress and compressive strains than that of Ni-based superalloys during the compressive tests.

Original language	English
Pages (from-to)	651-657
Number of pages	7
Journal	Scripta Materialia
Volume	41
Issue number	6
DOIs	https://doi.org/10.1016/S1359-6462(99)00112-8
Publication status	Published - 1999 Aug 20
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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Yu, X., Yamabe-Mitarai, Y., Ro, Y., Gu, Y., & Harada, H. (1999). Development of quaternary Ir-Ta-Ni-Al refractory superalloys. Scripta Materialia, 41(6), 651-657. https://doi.org/10.1016/S1359-6462(99)00112-8

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abstract = "The microstructure and compressive properties of quaternary refractory superalloys from two binary alloys which were composed of face centered cubic (fcc)/L12 coherent structures were examined. Ir-Ta and Ni-Al alloys were mixed in different proportions to form a quaternary superalloys. A three-phase equilibrium exists in the alloys including 25% and 75% Ir-based alloys, consisting of two kinds of L12 (Ir3Ta and Ni3Al types) and fcc structure. A four-phase equilibrium exists in the alloy including 50% Ir-based alloy after heated at 1300 °C for 168 hours consisting of two kinds of L12, fcc, and B2 structures. At 1200 °C, these alloys exhibited higher yield stress and compressive strains than that of Ni-based superalloys during the compressive tests.",

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AU - Harada, Hiroshi

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AB - The microstructure and compressive properties of quaternary refractory superalloys from two binary alloys which were composed of face centered cubic (fcc)/L12 coherent structures were examined. Ir-Ta and Ni-Al alloys were mixed in different proportions to form a quaternary superalloys. A three-phase equilibrium exists in the alloys including 25% and 75% Ir-based alloys, consisting of two kinds of L12 (Ir3Ta and Ni3Al types) and fcc structure. A four-phase equilibrium exists in the alloy including 50% Ir-based alloy after heated at 1300 °C for 168 hours consisting of two kinds of L12, fcc, and B2 structures. At 1200 °C, these alloys exhibited higher yield stress and compressive strains than that of Ni-based superalloys during the compressive tests.

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