Ab Initio Based Understanding of the Segregation and Diffusion Mechanisms of Hydrogen in Steels
A microscopic understanding of the processes that lead to hydrogen embrittlement is of critical importance for developing new generations of high-strength steels. With this article, we provide an overview of insights that can be gained from ab initio based methods when investigating the segregation...
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| Veröffentlicht in: | JOM (1989) 2014-08, Vol.66 (8), p.1399-1405 |
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| container_title | JOM (1989) |
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| creator | Hickel, T. Nazarov, R. McEniry, E. J. Leyson, G. Grabowski, B. Neugebauer, J. |
| description | A microscopic understanding of the processes that lead to hydrogen embrittlement is of critical importance for developing new generations of high-strength steels. With this article, we provide an overview of insights that can be gained from
ab initio
based methods when investigating the segregation and diffusion mechanisms of hydrogen in steels. We first discuss the solubility and diffusion behavior of hydrogen in the ferrite, austenite, and martensite phases. We consider not only defect-free bulk phases but also the influence of alloying elements and geometric defects such as vacancies and grain boundaries. In the second part, the behavior of hydrogen in the presence of precipitates, the solubility, the surface absorption, and the influence of hydrogen on the interface cohesion are studied. Finally, we provide simulation results for the interaction of hydrogen with dislocations. For all these applications, we will comment on advantages and shortcomings of
ab initio
methods and will demonstrate how the obtained data and insights can complement experimental approaches to extract general trends and to identify causes of hydrogen embrittlement. |
| doi_str_mv | 10.1007/s11837-014-1055-3 |
| format | Article |
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ab initio
based methods when investigating the segregation and diffusion mechanisms of hydrogen in steels. We first discuss the solubility and diffusion behavior of hydrogen in the ferrite, austenite, and martensite phases. We consider not only defect-free bulk phases but also the influence of alloying elements and geometric defects such as vacancies and grain boundaries. In the second part, the behavior of hydrogen in the presence of precipitates, the solubility, the surface absorption, and the influence of hydrogen on the interface cohesion are studied. Finally, we provide simulation results for the interaction of hydrogen with dislocations. For all these applications, we will comment on advantages and shortcomings of
ab initio
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ab initio
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ab initio
methods and will demonstrate how the obtained data and insights can complement experimental approaches to extract general trends and to identify causes of hydrogen embrittlement.</description><subject>Blocking</subject><subject>Brittleness</subject><subject>Carbides</subject><subject>Chemistry/Food Science</subject><subject>Coherence</subject><subject>Diffusion</subject><subject>Earth Sciences</subject><subject>Engineering</subject><subject>Environment</subject><subject>Heat treating</subject><subject>High strength steel</subject><subject>Hydrogen</subject><subject>Mathematical analysis</subject><subject>Physics</subject><subject>Segregations</subject><subject>Steel</subject><subject>Steels</subject><subject>Strain rate</subject><subject>Studies</subject><subject>Trapping</subject><issn>1047-4838</issn><issn>1543-1851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp1kL1OwzAURiMEEqXwAGyWWFgCvrEdO2MpP61UxFA6W05yk6ZKnWKnQ98eR2FASEy25fN9uvdE0S3QB6BUPnoAxWRMgcdAhYjZWTQBwVkMSsB5uFMuY66YuoyuvN_RkOEZTCI9y8nSNn3TkSfjsSQbW6LzvbFlY2vSVaTfIllj7bA2gbIk_JDnpqqOfni9Y7E1tvF7P7CLU-m6Gi1pLFn3iK2_ji4q03q8-Tmn0eb15XO-iFcfb8v5bBUXXIk-ziDNJMoUkWUqqVQGtKAFFzKRPClZzlnGCxBVmlFhQEojjciRqzQFMGWObBrdj70H130d0fd63_gC29ZY7I5egwSVJWF_HtC7P-iuOzobptMgRPA4mAwUjFThOu8dVvrgmr1xJw1UD8r1qFwH5XpQrlnIJGPGB9bW6H41_xv6BoAcgfc</recordid><startdate>20140801</startdate><enddate>20140801</enddate><creator>Hickel, T.</creator><creator>Nazarov, R.</creator><creator>McEniry, E. 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ab initio
based methods when investigating the segregation and diffusion mechanisms of hydrogen in steels. We first discuss the solubility and diffusion behavior of hydrogen in the ferrite, austenite, and martensite phases. We consider not only defect-free bulk phases but also the influence of alloying elements and geometric defects such as vacancies and grain boundaries. In the second part, the behavior of hydrogen in the presence of precipitates, the solubility, the surface absorption, and the influence of hydrogen on the interface cohesion are studied. Finally, we provide simulation results for the interaction of hydrogen with dislocations. For all these applications, we will comment on advantages and shortcomings of
ab initio
methods and will demonstrate how the obtained data and insights can complement experimental approaches to extract general trends and to identify causes of hydrogen embrittlement.</abstract><cop>Boston</cop><pub>Springer US</pub><doi>10.1007/s11837-014-1055-3</doi><tpages>7</tpages></addata></record> |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Blocking Brittleness Carbides Chemistry/Food Science Coherence Diffusion Earth Sciences Engineering Environment Heat treating High strength steel Hydrogen Mathematical analysis Physics Segregations Steel Steels Strain rate Studies Trapping |
| title | Ab Initio Based Understanding of the Segregation and Diffusion Mechanisms of Hydrogen in Steels |
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