Microstructures and fracture behaviours of Ir-Nb two-phase refractory superalloys containing various amounts of Nb, Ni, Mo, C and B

Y. F. Gu; Yoko Mitarai; Y. Ro; H. Harada

Microstructures and fracture behaviours of Ir-Nb two-phase refractory superalloys containing various amounts of Nb, Ni, Mo, C and B

Y. F. Gu, Yoko Mitarai, Y. Ro, H. Harada

Research output: Contribution to journal › Conference article › peer-review

Abstract

The effects of various Nb, Ni, Mo, B, and C content on the microstructures and deformation behaviours of Ir-Nb fcc-L1₂ two-phase refractory superalloys were investigated at both room and high temperatures. The results showed that the intergranular fracture occurring in Ir single-phase alloys could be governed by controlling the microstructures around GBs and alloying Ni, B and C in Ir-15at%Nb two-phase alloys. The results also showed that Ir-15at%Nb two-phase refractory superalloys alloyed with about 10at% Ni were superior to the binary Ir-15at%Nb two-phase alloy as an ultra-high temperature structural material in terms of strength, fracture behavior, and density.

Original language	English
Pages (from-to)	669-676
Number of pages	8
Journal	Key Engineering Materials
Volume	171-174
Publication status	Published - 2000 Jan 1
Externally published	Yes
Event	Proceedings of the 1999 8th International Conference on Creep and Fracture of Engineering Materials and Structures - Tsukuba, Jpn Duration: 1999 Nov 1 → 1999 Nov 5

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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@article{201983f883a24b0bb2448d7930f44986,

title = "Microstructures and fracture behaviours of Ir-Nb two-phase refractory superalloys containing various amounts of Nb, Ni, Mo, C and B",

abstract = "The effects of various Nb, Ni, Mo, B, and C content on the microstructures and deformation behaviours of Ir-Nb fcc-L12 two-phase refractory superalloys were investigated at both room and high temperatures. The results showed that the intergranular fracture occurring in Ir single-phase alloys could be governed by controlling the microstructures around GBs and alloying Ni, B and C in Ir-15at%Nb two-phase alloys. The results also showed that Ir-15at%Nb two-phase refractory superalloys alloyed with about 10at% Ni were superior to the binary Ir-15at%Nb two-phase alloy as an ultra-high temperature structural material in terms of strength, fracture behavior, and density.",

author = "Gu, {Y. F.} and Yoko Mitarai and Y. Ro and H. Harada",

year = "2000",

month = jan,

day = "1",

language = "English",

volume = "171-174",

pages = "669--676",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications",

note = "Proceedings of the 1999 8th International Conference on Creep and Fracture of Engineering Materials and Structures ; Conference date: 01-11-1999 Through 05-11-1999",

}

TY - JOUR

T1 - Microstructures and fracture behaviours of Ir-Nb two-phase refractory superalloys containing various amounts of Nb, Ni, Mo, C and B

AU - Gu, Y. F.

AU - Mitarai, Yoko

AU - Ro, Y.

AU - Harada, H.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - The effects of various Nb, Ni, Mo, B, and C content on the microstructures and deformation behaviours of Ir-Nb fcc-L12 two-phase refractory superalloys were investigated at both room and high temperatures. The results showed that the intergranular fracture occurring in Ir single-phase alloys could be governed by controlling the microstructures around GBs and alloying Ni, B and C in Ir-15at%Nb two-phase alloys. The results also showed that Ir-15at%Nb two-phase refractory superalloys alloyed with about 10at% Ni were superior to the binary Ir-15at%Nb two-phase alloy as an ultra-high temperature structural material in terms of strength, fracture behavior, and density.

AB - The effects of various Nb, Ni, Mo, B, and C content on the microstructures and deformation behaviours of Ir-Nb fcc-L12 two-phase refractory superalloys were investigated at both room and high temperatures. The results showed that the intergranular fracture occurring in Ir single-phase alloys could be governed by controlling the microstructures around GBs and alloying Ni, B and C in Ir-15at%Nb two-phase alloys. The results also showed that Ir-15at%Nb two-phase refractory superalloys alloyed with about 10at% Ni were superior to the binary Ir-15at%Nb two-phase alloy as an ultra-high temperature structural material in terms of strength, fracture behavior, and density.

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M3 - Conference article

AN - SCOPUS:0033908732

VL - 171-174

SP - 669

EP - 676

JO - Key Engineering Materials

JF - Key Engineering Materials

SN - 1013-9826

T2 - Proceedings of the 1999 8th International Conference on Creep and Fracture of Engineering Materials and Structures

Y2 - 1 November 1999 through 5 November 1999

ER -