Drastically improved ductility of an Ir-base alloy by mixing Ir-Nb with Ni-Al

X. H. Yu; Y. Yamabe-Mitarai; S. Nakazawa; Y. Ro; H. Harada

doi:10.1016/S0921-5093(01)01624-0

Drastically improved ductility of an Ir-base alloy by mixing Ir-Nb with Ni-Al

X. H. Yu, Y. Yamabe-Mitarai, S. Nakazawa, Y. Ro, H. Harada

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

The fcc/Ll₂ coherent structure formed in the quaternary Ir-Nb-Ni-Al alloys. The ductility of quaternary Ir-Nb alloy was drastically improved by mixing with Ni-Al binary alloy. The two investigated alloys exhibited higher high-temperature 0.2% flow stress (e.g. above 1000 MPa at 1200 °C) and better ductility (≈ 20% both at room temperature and 1200 °C). An excellent balance of high-temperature strength and ductility was obtained. The improvement of ductility was attributed to change the fracture mode from intergranular to transgranular.

Original language	English
Pages (from-to)	481-485
Number of pages	5
Journal	Materials Science and Engineering A
Volume	329-331
DOIs	https://doi.org/10.1016/S0921-5093(01)01624-0
Publication status	Published - 2002 Jun
Externally published	Yes

Keywords

Ductility
High-temperature strength
Microstructure
Quaternary Ir-base alloys

ASJC Scopus subject areas

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

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10.1016/S0921-5093(01)01624-0

Cite this

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title = "Drastically improved ductility of an Ir-base alloy by mixing Ir-Nb with Ni-Al",

abstract = "The fcc/Ll2 coherent structure formed in the quaternary Ir-Nb-Ni-Al alloys. The ductility of quaternary Ir-Nb alloy was drastically improved by mixing with Ni-Al binary alloy. The two investigated alloys exhibited higher high-temperature 0.2% flow stress (e.g. above 1000 MPa at 1200 °C) and better ductility (≈ 20% both at room temperature and 1200 °C). An excellent balance of high-temperature strength and ductility was obtained. The improvement of ductility was attributed to change the fracture mode from intergranular to transgranular.",

keywords = "Ductility, High-temperature strength, Microstructure, Quaternary Ir-base alloys",

author = "Yu, {X. H.} and Y. Yamabe-Mitarai and S. Nakazawa and Y. Ro and H. Harada",

year = "2002",

month = jun,

doi = "10.1016/S0921-5093(01)01624-0",

language = "English",

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journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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T1 - Drastically improved ductility of an Ir-base alloy by mixing Ir-Nb with Ni-Al

AU - Yu, X. H.

AU - Yamabe-Mitarai, Y.

AU - Nakazawa, S.

AU - Ro, Y.

AU - Harada, H.

PY - 2002/6

Y1 - 2002/6

N2 - The fcc/Ll2 coherent structure formed in the quaternary Ir-Nb-Ni-Al alloys. The ductility of quaternary Ir-Nb alloy was drastically improved by mixing with Ni-Al binary alloy. The two investigated alloys exhibited higher high-temperature 0.2% flow stress (e.g. above 1000 MPa at 1200 °C) and better ductility (≈ 20% both at room temperature and 1200 °C). An excellent balance of high-temperature strength and ductility was obtained. The improvement of ductility was attributed to change the fracture mode from intergranular to transgranular.

AB - The fcc/Ll2 coherent structure formed in the quaternary Ir-Nb-Ni-Al alloys. The ductility of quaternary Ir-Nb alloy was drastically improved by mixing with Ni-Al binary alloy. The two investigated alloys exhibited higher high-temperature 0.2% flow stress (e.g. above 1000 MPa at 1200 °C) and better ductility (≈ 20% both at room temperature and 1200 °C). An excellent balance of high-temperature strength and ductility was obtained. The improvement of ductility was attributed to change the fracture mode from intergranular to transgranular.

KW - Ductility

KW - High-temperature strength

KW - Microstructure

KW - Quaternary Ir-base alloys

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DO - 10.1016/S0921-5093(01)01624-0

M3 - Article

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VL - 329-331

SP - 481

EP - 485

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

ER -

Drastically improved ductility of an Ir-base alloy by mixing Ir-Nb with Ni-Al

Abstract

Keywords

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