Environmental and internal hydrogen embrittlement of a directionally solidified Ni-rich Ni3Al intermetallics
文献类型：期刊论文
| 作者 | J. Q. Su ; S. J. Gao ; Z. Q. Hu |
| 刊名 | Journal of Materials Science
 |
| 出版日期 | 2000 |
| 卷号 | 35期号:6页码:1433-1438 |
| 关键词 | room-temperature ductility unidirectional solidification stoichiometric ni3al single-crystals polycrystalline ni3al major cause fracture deformation improvement behavior |
| ISSN号 | 0022-2461 |
| 中文摘要 | The influence of tensile orientation, test environments and internal hydrogen contents on the room temperature tensile properties of a directionally solidified Ni3Al alloy was investigated. The specimens parallel to the growth direction exhibited a good ductility and little susceptibility to test environment. The values of elongation in vacuum, air and H-2 are 39.7%, 39.2% and 29.7%, respectively. Also, a transgranular fracture mode was observed in the specimens. However, the specimens perpendicular to the growth direction exhibited lower ductility, much more sensitivity to test environment and intergranular fracture mode. The elongation values in vacuum, air and H-2 are 13.7%, 10.3% and 3.3%, respectively. The results indicate that the cohesive strength of grain boundaries in the alloy is low and they are more susceptible to test environment than are grain interiors. In addition, only a slight embrittlement of the internal hydrogen was found in the specimens parallel to the growth direction. (C) 2000 Kluwer Academic Publishers. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37162]  |
| 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. Q. Su,S. J. Gao,Z. Q. Hu. Environmental and internal hydrogen embrittlement of a directionally solidified Ni-rich Ni3Al intermetallics[J]. Journal of Materials Science,2000,35(6):1433-1438. |
| APA | J. Q. Su,S. J. Gao,&Z. Q. Hu.(2000).Environmental and internal hydrogen embrittlement of a directionally solidified Ni-rich Ni3Al intermetallics.Journal of Materials Science,35(6),1433-1438. |
| MLA | J. Q. Su,et al."Environmental and internal hydrogen embrittlement of a directionally solidified Ni-rich Ni3Al intermetallics".Journal of Materials Science 35.6(2000):1433-1438. |
入库方式： OAI收割
来源：金属研究所
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