Translated Titles

Influence of Ruthenium Element on Intermediate and High Temperature Creep Properties of a Nickel-base Superalloy


廖健鴻(J. H. Liao);薄慧雲(H. Y. Bor);倪國裕(G. Y. Ni);魏肇男(C. N. Wei);鄭文興(V. S. Jeng)

Key Words

釕 ; 超合金 ; 鎳 ; 潛變 ; ruthenium ; superalloy ; nickel ; creep



Volume or Term/Year and Month of Publication

41卷2期(2015 / 06 / 01)

Page #

24 - 30

Content Language


Chinese Abstract


English Abstract

In the early development of Ni-base superalloy, the strength of alloy was increased by increasing the amount of γ‘ precipitate. However, theγ‘ phase was limited to approximately 65-70% volume fraction to maximize precipitation strength. Recent researches showed that further improvement in the strength can be achieved through solid solution strengthening of theγ matrix, e.g., by adding over 5 wt.% Re element. However, if the Re element was excessive, it tended to promote the formation of deleterious topological closed-packed (TCP) phases at the long-term elevated temperatures exposures, resulting in a decrease in the creep properties. In this study, alloys based on Ni-10Co-10W-8.4Cr-5.5Al-5Re-3Ta-1.3Hf-1Ti-0.7Mo-0.14C alloy which was contained 5 wt.% Re. and various Ru elements were added to base alloy. The purpose of this investigation was to determine the influence of Ru on the intermediate temperature - high stress (760℃/724MPa) and high temperature - low stress (982℃/200MPa) creep properties of alloy. The results showed that the addition of 3 wt.% Ru significantly prevented the formation of TCP phase and prolonged the creep life of alloy.

Topic Category 工程學 > 礦冶與冶金工程