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DOI | 10.1126/science.aaz0122 |
Observation of hydrogen trapping at dislocations, grain boundaries, and precipitates | |
Chen Y.-S.; Lu H.; Liang J.; Rosenthal A.; Liu H.; Sneddon G.; McCarroll I.; Zhao Z.; Li W.; Guo A.; Cairney J.M. | |
发表日期 | 2020 |
ISSN | 0036-8075 |
起始页码 | 171 |
结束页码 | 175 |
卷号 | 367期号:6474 |
英文摘要 | Hydrogen embrittlement of high-strength steel is an obstacle for using these steels in sustainable energy production. Hydrogen embrittlement involves hydrogen-defect interactions at multiple-length scales. However, the challenge of measuring the precise location of hydrogen atoms limits our understanding. Thermal desorption spectroscopy can identify hydrogen retention or trapping, but data cannot be easily linked to the relative contributions of different microstructural features. We used cryo-transfer atom probe tomography to observe hydrogen at specific microstructural features in steels. Direct observation of hydrogen at carbon-rich dislocations and grain boundaries provides validation for embrittlement models. Hydrogen observed at an incoherent interface between niobium carbides and the surrounding steel provides direct evidence that these incoherent boundaries can act as trapping sites. This information is vital for designing embrittlement-resistant steels. © 2020 American Association for the Advancement of Science. All rights reserved. |
英文关键词 | carbon; deuterium; niobium; niobium carbide derivative; steel; unclassified drug; alternative energy; desorption; dislocation; grain boundary; hydrogen; niobium; probe; steel; tomography; Article; chemical analysis; cryotransfer atom probe tomography; electrolysis; grain; histogram; hydrogen embrittlement; hydrogen trapping; mass spectrometry; particle size; physical chemistry; physical parameters; priority journal; quantitative analysis; spectroscopy; thermal desorption spectroscopy; tomography; transmission electron microscopy |
语种 | 英语 |
来源期刊 | Science |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/243310 |
作者单位 | Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, Australia; School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, Australia; CITIC Metal Co., Beijing, China; Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, China; Microscopy Solutions Pty., Caulfield North, Australia; Sydney Microscopy and Microanalysis, University of Sydney, Sydney, Australia; Institute of Advanced Steels and Materials, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China |
推荐引用方式 GB/T 7714 | Chen Y.-S.,Lu H.,Liang J.,et al. Observation of hydrogen trapping at dislocations, grain boundaries, and precipitates[J],2020,367(6474). |
APA | Chen Y.-S..,Lu H..,Liang J..,Rosenthal A..,Liu H..,...&Cairney J.M..(2020).Observation of hydrogen trapping at dislocations, grain boundaries, and precipitates.Science,367(6474). |
MLA | Chen Y.-S.,et al."Observation of hydrogen trapping at dislocations, grain boundaries, and precipitates".Science 367.6474(2020). |
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