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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.
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
来源机构	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133796
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]. Science,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.,367(6474).
MLA	Chen Y.-S.,et al."Observation of hydrogen trapping at dislocations, grain boundaries, and precipitates".367.6474(2020).