Fatigue crack growth behavior of a newly developed Ni-Co-base superalloy TMW-2 at elevated temperatures
文献类型：期刊论文
| 作者 | Z. H. Zhong ; Y. F. Gu ; Y. Yuan ; C. Y. Cui ; T. Yokokawa ; H. Harada |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2012 |
| 卷号 | 552页码:464-471 |
| 关键词 | Fatigue crack growth Ni-base superalloys Temperature effect Load ratio effect nickel-based superalloy wave-form creep micromechanisms frequency oxidation alloy ratio |
| ISSN号 | 0921-5093 |
| 中文摘要 | Fatigue crack growth (FCG) rates of a new superalloy TMW-2 in air was studied by a fracture mechanics test method. Compact tension specimens were tested under load control with a triangular wave form to investigate the effects of temperature (400, 650, and 725 degrees C) and load ratio (0.05 and 0.5) on FCG rates. The results showed that the FCG rates increased significantly with increasing the temperature. Compared with the creep effects, the results showed that the degradation of mechanical properties and the oxidation assisted crack growth may dominate the FCG rates of TMW-2 at elevated temperatures. Load ratio had a little (at 400 degrees C) or moderate (at 650 and 725 degrees C) influence on the FCG rates, which increased as the load ratio increased. The load ratio effects were successfully accounted for by applying the Walker model. The fractographic observations showed that the fracture mode was transgranular at 400 degrees C and was mixed transgranular and intergranular at 650 and 725 degrees C. (c) 2012 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60517]  |
| 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 | Z. H. Zhong,Y. F. Gu,Y. Yuan,et al. Fatigue crack growth behavior of a newly developed Ni-Co-base superalloy TMW-2 at elevated temperatures[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2012,552:464-471. |
| APA | Z. H. Zhong,Y. F. Gu,Y. Yuan,C. Y. Cui,T. Yokokawa,&H. Harada.(2012).Fatigue crack growth behavior of a newly developed Ni-Co-base superalloy TMW-2 at elevated temperatures.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,552,464-471. |
| MLA | Z. H. Zhong,et al."Fatigue crack growth behavior of a newly developed Ni-Co-base superalloy TMW-2 at elevated temperatures".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 552(2012):464-471. |
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。