Effects of Ru on microstructure stability and mechanical properties of Ni3Al single crystal alloy

Shu Suo Li; Xiao Ying Xie; Li Wu Jiang; Ya Fang Han

doi:10.1016/S1002-0071(12)60059-8

Effects of Ru on microstructure stability and mechanical properties of Ni₃Al single crystal alloy

Shu Suo Li
, Xiao Ying Xie^*
, Li Wu Jiang
, Ya Fang Han

^*Corresponding author for this work

Research institute of Aero-Engine

Beihang University

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

10 Scopus citations

Abstract

The effect of Ru on microstructure stability and stress rupture properties of a Ni₃Al single-crystal alloy was investigated. The experimental results showed that the addition of 2% Ru (mass fraction) improved the microstructure stability due to the restraint of harmful Y-NiMo phase formation during the thermal exposure at the high temperature above 1 000 °C. And the reason may be that the addition of Ru increased the degree of Mo supersaturation in both γ and γ' phases, and hence suppressed the precipitation of Y-NiMo phase. The results of stress rupture tests under the testing condition of 1 100 °C, 120 MPa showed that the addition of 2% Ru in the alloy improved the stress rupture lives significantly for thermal exposed samples. The improvement of the stress rupture properties may be attributed to the restraint of Y-NiMo phase precipitation and growth by the addition of the proper amount Ru.

Original language	English
Pages (from-to)	286-292
Number of pages	7
Journal	Progress in Natural Science: Materials International
Volume	21
Issue number	4
DOIs	https://doi.org/10.1016/S1002-0071(12)60059-8
State	Published - Aug 2011

Keywords

Microstructure stability
Ru
Stress rupture
Y-NiMo phase

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10.1016/S1002-0071(12)60059-8

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title = "Effects of Ru on microstructure stability and mechanical properties of Ni3Al single crystal alloy",

abstract = "The effect of Ru on microstructure stability and stress rupture properties of a Ni3Al single-crystal alloy was investigated. The experimental results showed that the addition of 2\% Ru (mass fraction) improved the microstructure stability due to the restraint of harmful Y-NiMo phase formation during the thermal exposure at the high temperature above 1 000 °C. And the reason may be that the addition of Ru increased the degree of Mo supersaturation in both γ and γ' phases, and hence suppressed the precipitation of Y-NiMo phase. The results of stress rupture tests under the testing condition of 1 100 °C, 120 MPa showed that the addition of 2\% Ru in the alloy improved the stress rupture lives significantly for thermal exposed samples. The improvement of the stress rupture properties may be attributed to the restraint of Y-NiMo phase precipitation and growth by the addition of the proper amount Ru.",

keywords = "Microstructure stability, Ru, Stress rupture, Y-NiMo phase",

author = "Li, \{Shu Suo\} and Xie, \{Xiao Ying\} and Jiang, \{Li Wu\} and Han, \{Ya Fang\}",

year = "2011",

month = aug,

doi = "10.1016/S1002-0071(12)60059-8",

language = "英语",

volume = "21",

pages = "286--292",

journal = "Progress in Natural Science: Materials International",

issn = "1002-0071",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Effects of Ru on microstructure stability and mechanical properties of Ni3Al single crystal alloy

AU - Li, Shu Suo

AU - Xie, Xiao Ying

AU - Jiang, Li Wu

AU - Han, Ya Fang

PY - 2011/8

Y1 - 2011/8

N2 - The effect of Ru on microstructure stability and stress rupture properties of a Ni3Al single-crystal alloy was investigated. The experimental results showed that the addition of 2% Ru (mass fraction) improved the microstructure stability due to the restraint of harmful Y-NiMo phase formation during the thermal exposure at the high temperature above 1 000 °C. And the reason may be that the addition of Ru increased the degree of Mo supersaturation in both γ and γ' phases, and hence suppressed the precipitation of Y-NiMo phase. The results of stress rupture tests under the testing condition of 1 100 °C, 120 MPa showed that the addition of 2% Ru in the alloy improved the stress rupture lives significantly for thermal exposed samples. The improvement of the stress rupture properties may be attributed to the restraint of Y-NiMo phase precipitation and growth by the addition of the proper amount Ru.

AB - The effect of Ru on microstructure stability and stress rupture properties of a Ni3Al single-crystal alloy was investigated. The experimental results showed that the addition of 2% Ru (mass fraction) improved the microstructure stability due to the restraint of harmful Y-NiMo phase formation during the thermal exposure at the high temperature above 1 000 °C. And the reason may be that the addition of Ru increased the degree of Mo supersaturation in both γ and γ' phases, and hence suppressed the precipitation of Y-NiMo phase. The results of stress rupture tests under the testing condition of 1 100 °C, 120 MPa showed that the addition of 2% Ru in the alloy improved the stress rupture lives significantly for thermal exposed samples. The improvement of the stress rupture properties may be attributed to the restraint of Y-NiMo phase precipitation and growth by the addition of the proper amount Ru.

KW - Microstructure stability

KW - Ru

KW - Stress rupture

KW - Y-NiMo phase

UR - https://www.scopus.com/pages/publications/84861866224

U2 - 10.1016/S1002-0071(12)60059-8

DO - 10.1016/S1002-0071(12)60059-8

M3 - 文章

AN - SCOPUS:84861866224

SN - 1002-0071

VL - 21

SP - 286

EP - 292

JO - Progress in Natural Science: Materials International

JF - Progress in Natural Science: Materials International

IS - 4

ER -

Effects of Ru on microstructure stability and mechanical properties of Ni₃Al single crystal alloy

Abstract

Keywords

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