Effect of Ru on Deformation Mechanism and Microstructure Evolution of Single-Crystal Superalloys under Medium-Temperature and High-Stress Creep

被引：3
|
作者：
Emokpaire, Stephen Okhiai [1 ,2 ]
Wang, Nan [1 ,3 ]
Liu, Jide [1 ]
Zhu, Chongwei [1 ]
Wang, Xinguang [1 ]
Li, Jinguo [1 ]
Zhou, Yizhou [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
[3] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110016, Peoples R China
来源：
MATERIALS | 2023年 / 16卷 / 07期
关键词：
creep deformation; deformation mechanism; ' phase; single-crystal superalloys; NICKEL-BASE SUPERALLOY; GAMMA/GAMMA' INTERFACE; CYCLE FATIGUE; TCP PHASE; PRECIPITATION; BEHAVIOR; TENSILE; RE; MICROSEGREGATION; RUTHENIUM;
D O I：
10.3390/ma16072732
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, the effect of the Ru element on the ?'-phase evolution and deformation mechanism in the fourth-generation Ni-based single-crystal superalloy was investigated. Results show that the Ru element alters the distribution coefficient of other elements in the alloy to produce reverse partitioning behavior, which leads to a difference in microstructure between 0Ru and 3Ru. The addition of Ru triggered the incubation period before the beginning of the primary creep stage, which depends on the creep temperature and stress during creep deformation. TEM results revealed that Ru addition inhibits the slip system {111}< 112 > at medium-temperature (760-1050 C-?) and high-stress (270-810 MPa) creep, which brings a considerably low creep rate and high creep life to the Ru-containing alloy.
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页数：14
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