| A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen | |
| Jiang, CB; Li, H; Tan, J; Wu, SD; Rong, LJ; Patu, S | |
| Corresponding Author | Jiang, CB(chbjiang@imr.ac.cn) |
| 2001-04-01 | |
| Source Publication | INTERMETALLICS
 |
| ISSN | 0966-9795 |
| Volume | 9Issue:4Pages:355-360 |
| Abstract | The effect of hydrogen on the average dislocation velocities in Ni(3)Al single crystals has been investigated by the etch-pit technique. It is found that the velocity is dramatically decreased by the charged high content of hydrogen and that the tension/compression asymmetry of the dislocation velocity is reversed. Detailed observation of the dislocation structure indicates that the motion of edge superkinks is seriously inhibited by hydrogen solutes. These results serve as a strong evidence for the mechanism of hydrogen strengthening in metals. The interaction between the solute H and the edge dislocations also throws a sidelight on the role of kinks in the flow stress anomaly in Ni(3)Al. (C) 2001 Elsevier Science Ltd. All rights reserved. |
| Keyword | nickel aluminides, based on Ni(3)Al hydrogen embrittlement defects : dislocation geometry and arrangement |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000168566700012 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/112742 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Jiang, CB |
| Affiliation | 1.Chinese Acad Sci, Met Res Inst, State Key Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Met Res Inst, State Key Lab Rapidly Solidified Nonequilibrium A, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Jiang, CB,Li, H,Tan, J,et al. A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen[J]. INTERMETALLICS,2001,9(4):355-360. |
| APA | Jiang, CB,Li, H,Tan, J,Wu, SD,Rong, LJ,&Patu, S.(2001).A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen.INTERMETALLICS,9(4),355-360. |
| MLA | Jiang, CB,et al."A dramatic decrease of the dislocation velocity in Ni(3)Al single crystals under the influence of hydrogen".INTERMETALLICS 9.4(2001):355-360. |
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