| An interplay of sulfur and phosphorus at the gamma-Ni/gamma '-Ni3Al interface |
| S. He; P. Peng; L. Peng; Y. Chen; H. Wei; Z. Q. Hu
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| 2014
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| 发表期刊 | Journal of Alloys and Compounds
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| ISSN | 0925-8388
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| 卷号 | 597页码:243-248 |
| 摘要 | A first-principles investigation of the interplay of S and P and their role on the cleavage rupture of gamma-Ni/gamma'-Ni3Al interface is conducted. Trace elements S and P can coexist in the gamma-Ni/gamma'-Ni3Al interfacial region and their site preferences are scarcely changed by another heterogeneous element. S and P in duplex doping systems tend to simultaneously replace for a Ni and occupy an octahedral interstice adjacent to substituted sub-lattice site to form a doping atom pair, but the interaction between S-doping and P-doping varies with their distributions along or across the interfacial layer. The cleavage fracture of duplex doping interfaces generally occurs in the region between S-doped and P-doped atomic layers, and an extra heterogeneous dopant will further aggravate S- or P-induced embrittlement. It is revealed a strong repulsive interaction between P-doping and S-doping is responsible for the descent of cleavage fracture strengths caused by extra heterogeneous dopants. (C) 2014 Elsevier B. V. All rights reserved. |
| 部门归属 | [he, s.
; peng, p.
; peng, l.
; chen, y.] hunan univ, sch mat sci & engn, changsha 410082, hunan, peoples r china. [wei, h.
; hu, z. q.] chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china.
; peng, p (reprint author), hunan univ, sch mat sci & engn, changsha 410082, hunan, peoples r china.
; ppeng@hnu.edu.cn
|
| 关键词 | Ni-based Superalloy
Gamma-ni/gamma '-ni3al Interface
Griffith Rupture
Strength
Doping
First-principles Calculation
Ni/ni3al Interface
1st-principles
Superalloys
Embrittlement
Re
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| URL | 查看原文
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| 语种 | 英语
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/72851
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
S. He,P. Peng,L. Peng,et al. An interplay of sulfur and phosphorus at the gamma-Ni/gamma '-Ni3Al interface[J]. Journal of Alloys and Compounds,2014,597:243-248.
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| APA |
S. He,P. Peng,L. Peng,Y. Chen,H. Wei,&Z. Q. Hu.(2014).An interplay of sulfur and phosphorus at the gamma-Ni/gamma '-Ni3Al interface.Journal of Alloys and Compounds,597,243-248.
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| MLA |
S. He,et al."An interplay of sulfur and phosphorus at the gamma-Ni/gamma '-Ni3Al interface".Journal of Alloys and Compounds 597(2014):243-248.
|
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