Effect of ruthenium on high-temperature creep rupture life of a single crystal nickel-based superalloy

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	Effect of ruthenium on high-temperature creep rupture life of a single crystal nickel-based superalloy
	X. P. Tan ; J. L. Liu ; T. Jin ; Z. Q. Hu ; H. U. Hong ; B. G. Choi ; I. S. Kim ; C. Y. Jo
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2011
卷号	528 期号:29-30 页码:8381-8388
关键词	Nickel-based superalloy Ruthenium (Ru) Microstructural evolution Creep Misfit interfacial dislocation networks precipitate morphology rhenium additions phase-stability heat-treatment ru microstructure interdiffusion intermediate deformation
ISSN号	0921-5093
中文摘要	The addition of 3 wt% ruthenium (Ru) has been found to improve the creep rupture lives of a single crystal Ni-based superalloy under both conditions of 1100 degrees C/150 MPa and 1000 degrees C/310 MPa. Creep curve analysis indicates that the creep mechanisms are different from each condition. The improvement of creep rupture lives by 3 wt% Ru addition is discussed not only from the view of dislocation movement but also the gamma' phase evolution. The change of gamma/gamma' lattice misfit in the initial microstructure is believed to be the key role of Ru on the high-temperature creep deformation. The larger negative lattice misfit caused by an addition of 3 wt% Ru induces smaller and more regular gamma' particles in the initial state, as well as denser dislocation networks at the gamma/gamma' interface during creep. These two aspects are crucial to the high-temperature creep rupture life. In addition, a little topologically close-packed (TCP) phases are observed after creep rupture in the two experimental alloys. (C) 2011 Elsevier B.V. All rights reserved.
原文出处	://WOS:000296676800011
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30694]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	X. P. Tan,J. L. Liu,T. Jin,et al. Effect of ruthenium on high-temperature creep rupture life of a single crystal nickel-based superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2011,528(29-30):8381-8388.
APA	X. P. Tan.,J. L. Liu.,T. Jin.,Z. Q. Hu.,H. U. Hong.,...&C. Y. Jo.(2011).Effect of ruthenium on high-temperature creep rupture life of a single crystal nickel-based superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,528(29-30),8381-8388.
MLA	X. P. Tan,et al."Effect of ruthenium on high-temperature creep rupture life of a single crystal nickel-based superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 528.29-30(2011):8381-8388.