Effect of hafnium on creep behavior of a corrosion resistant nickel base superalloy
文献类型：期刊论文
| 作者 | J. S. Hou ; J. T. Guo ; Y. X. Wu ; L. Z. Zhou ; H. Q. Ye |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2010 |
| 卷号 | 527期号:6页码:1548-1554 |
| 关键词 | Creep life Artificial neural networks Microstructure Superalloy Rafting Lattice misfit x-ray prediction alloys microstructure |
| ISSN号 | 0921-5093 |
| 中文摘要 | The effect of the selective additions of hafnium (Hf) on the variation of creep life and microstructure of an experimental nickel base superalloy has been investigated. Artificial neural networks (ANNs) were utilized to predict the effect of Hf content on the creep rupture life at temperatures of 850-950 degrees C and showed that, with the addition of Hf, the creep life was prolonged. This effect was more pronounced at low stress than at high stress and was most noticeable with the first 0-0.6 wt% of Hf addition. Analysis of the correlation between microstructure and creep life of 0.4 wt% Hf doped alloy revealed that at low stresses the initiation and propagation of microcracks from MC carbides was retarded, and the beneficial effect of grain boundary strengthening on creep life was significant, although the tendency of appearance of gamma' rafting in 0.4 wt% Hf doped alloy is very close to that in Hf-free alloy. This was in agreement with above ANNs prediction. In addition, the relationship between the appearance of gamma' rafting and lattice misfit with regards to Hf content was discussed. (C) 2009 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31152]  |
| 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 | J. S. Hou,J. T. Guo,Y. X. Wu,et al. Effect of hafnium on creep behavior of a corrosion resistant nickel base superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(6):1548-1554. |
| APA | J. S. Hou,J. T. Guo,Y. X. Wu,L. Z. Zhou,&H. Q. Ye.(2010).Effect of hafnium on creep behavior of a corrosion resistant nickel base superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(6),1548-1554. |
| MLA | J. S. Hou,et al."Effect of hafnium on creep behavior of a corrosion resistant nickel base superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.6(2010):1548-1554. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。