Influence of Ru on the Microstructure of Ni-base Single Crystal Superalloys

被引：9
作者：
Sun, Fei [1 ]
Zhang, Jianxin [1 ]
机构：
[1] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
来源：
EMERGING FOCUS ON ADVANCED MATERIALS, PTS 1 AND 2 | 2011年 / 306-307卷
关键词：
Superalloys; Ruthenium (Ru); Microstructure; TCP phases; PLATINUM-GROUP METALS; GAMMA'-PHASE; ALLOYING ELEMENTS; CREEP-PROPERTIES; SITE PREFERENCE; RUTHENIUM; RE; PRECIPITATION; MORPHOLOGY; ADDITIONS;
D O I：
10.4028/www.scientific.net/AMR.306-307.562
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Addition of Ru in Ni-base single crystal superalloys had been used to improve the elevated temperature strength and other multiple properties. Significant decreases in stacking fault energy of the gamma phase and the volume fraction of gamma' phase are observed with the addition of Ru. As well as serving as an effective solid-solution strengthening element in high refractory content Ni-base single crystal superalloys, Ru additions are able to effectively strengthen both the gamma and gamma' phases and suppress the formation of TCP phases. Due to the changes in the partitioning behavior of elements and the slight decrease in the supersaturation of refractory elements in gamma phase associated with Ru additions, high temperature creep resistance and the microstructural stability of the alloy are improved remarkable. The influence of Ru on the microstructure of Ni-base single crystal superalloys is reviewed.
引用
收藏
页码：562 / 571
页数：10
相关论文
共 94 条
[1]   The effect of long-term thermal exposures on the microstructure and properties of CMSX-10 single crystal Ni-base superalloys [J].
Acharya, A ;
Fuchs, GE .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 381 (1-2) :143-153
[2]  
Caron P, 2000, SUPERALLOYS 2000, P737
[3]  
Caron P., 2000, P 9 INT S SUP SUP 20, P747
[4]   High refractory, low misfit Ru-containing single-crystal superalloys [J].
Carroll, L. J. ;
Feng, Q. ;
Mansfield, J. F. ;
Pollock, T. M. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (10) :2927-2938
[5]   The microstructures of base/modified RR2072 SX superalloys and their effects on creep properties at elevated temperatures [J].
Chen, QZ ;
Jones, N ;
Knowles, DM .
ACTA MATERIALIA, 2002, 50 (05) :1095-1112
[6]  
COLLINS HE, 1974, METALL TRANS, V5, P189
[7]  
COLLINS HE, 1969, T QUART, V62, P82
[8]  
Cox D. C., 2000, P 11 INT C, P119
[9]  
Darolia R., 1988, P MET SOC SUP 1988 P, P255
[10]  
Duhl D.N., 1987, SUPERALLOYS 2 HIGH T, P189
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