| Phase stabilities in a NiCrAlYRe coating alloy | |
| J. J. Liang; H. Wei; Y. L. Zhu; T. Jin; X. F. Sun; Z. Q. Hu | |
| 2012 | |
| Source Publication | Surface & Coatings Technology
 |
| ISSN | 0257-8972 |
| Volume | 206Issue:11-12Pages:2746-2750 |
| Abstract | MCrAlY can serve as stand-alone overlay coatings or bond coats in thermal barrier coating systems, and its phase stabilities play a vital role in determining the performance of these coating systems. In the present paper, the phase evolution of a NiCrAlY model coating alloy containing Re was investigated by experimental observation and thermodynamic modeling in the temperature range from 800 degrees C to 1200 degrees C. A phase transformation occurred at temperatures between 1000 degrees C-1050 degrees C, which was confirmed as a four-phase reaction, gamma'-Ni3Al+alpha-Cr ->gamma-Ni+beta NiAl. The beta-NiAl phase was observed to undergo a martensite transformation in the specimens that were quenched from temperatures above 1000 degrees C, and this NiAl martensite could affect the microhardness of the NiCrAlY coating alloy significantly. TEM analysis illustrated that between the martensitic plates existed a twin boundary (macrotwin), and within the martensitic plates many nano striations (microtwins) were present. (C) 2011 Elsevier B.V. All rights reserved. |
| description.department | [liang, j. j.; wei, h.; jin, t.; sun, x. f.; hu, z. q.] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. [zhu, y. l.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;liang, jj (reprint author), chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china.;jjliang@imr.ac.cn |
| Keyword | Nicraly Microstructure Martensite Transformation Aluminide Bond Coat Thermal Barrier Coatings Thermoelastic Martensitic-transformation Ni-al Alloys Cr Evolution Microstructure Oxidation Behavior Systems |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/60088 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | J. J. Liang,H. Wei,Y. L. Zhu,et al. Phase stabilities in a NiCrAlYRe coating alloy[J]. Surface & Coatings Technology,2012,206(11-12):2746-2750. |
| APA | J. J. Liang,H. Wei,Y. L. Zhu,T. Jin,X. F. Sun,&Z. Q. Hu.(2012).Phase stabilities in a NiCrAlYRe coating alloy.Surface & Coatings Technology,206(11-12),2746-2750. |
| MLA | J. J. Liang,et al."Phase stabilities in a NiCrAlYRe coating alloy".Surface & Coatings Technology 206.11-12(2012):2746-2750. |
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