Deformation features of a nickel-base superalloy single crystal during compression creep
文献类型：期刊论文
| 作者 | S. G. Tian ; X. F. Yu ; J. H. Yang ; N. R. Zhao ; Y. B. Xu ; Z. Q. Hu |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2004 |
| 卷号 | 379期号:1-2页码:141-147 |
| 关键词 | single crystal nickel-base superalloy compression creep dislocation mechanical-properties volume fraction alloys gamma' orientation ni3al temperature dependence behavior stress |
| ISSN号 | 0921-5093 |
| 中文摘要 | The microstructure evolution of a single crystal nickel-base superalloy with [0 0 1] orientation during compressive creep at 1040 degreesC has been investigated by means of the observation of transmission electron microscopy. Results show that the cuboidal gamma' phase in the alloy is transformed into the strip-like rafted structure along the direction parallel to [0 0 1] stress axis during compressive creep. During the primary creep, the deformation feature of the alloy is the 1/2<1 1 0> dislocations activated in the gamma matrix. After crept for 50 h, the strip-like rafted gamma' (Ni3Al) phase in alloy is sheared by the <1 1 0> super-dislocations which may be dissociated into the 1/3<1 1 2> super-Shockley dislocations. The SISF formed from the dissociation of the [1 0 (1) over bar] super-dislocation is enclosed by the partials loops. One of the reason resulting in a smaller strain value of the alloy during compressive creep is the Giameis locks made from a combination of the partials loops and SISF which hinder the continuous expansion of the original [1 0 (1) over bar] super-dislocation. (C) 2004 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35563]  |
| 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 | S. G. Tian,X. F. Yu,J. H. Yang,et al. Deformation features of a nickel-base superalloy single crystal during compression creep[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2004,379(1-2):141-147. |
| APA | S. G. Tian,X. F. Yu,J. H. Yang,N. R. Zhao,Y. B. Xu,&Z. Q. Hu.(2004).Deformation features of a nickel-base superalloy single crystal during compression creep.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,379(1-2),141-147. |
| MLA | S. G. Tian,et al."Deformation features of a nickel-base superalloy single crystal during compression creep".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 379.1-2(2004):141-147. |
入库方式： OAI收割
来源：金属研究所
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