Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach
The current study is centered on elastic-plastic solid interaction with hydrogen. Here, the environment isfree hydrogen, from either external or internal origins providing as such aggressive effects. In this context, near surface displacement occurred, beside microcracking onset or growth, significa...
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| Дата: | 2008 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут проблем міцності ім. Г.С. Писаренко НАН України
2008
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| Назва видання: | Проблемы прочности |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/48451 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach / Y. Katz, N. Tymiak, W.W. Gerberich // Проблемы прочности. — 2008. — № 1. — С. 93-96. — Бібліогр.: 9 назв. — англ. |
Репозитарії
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irk-123456789-484512013-08-19T19:53:09Z Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach Katz, Y. Tymiak, N. Gerberich, W.W. Научно-технический раздел The current study is centered on elastic-plastic solid interaction with hydrogen. Here, the environment isfree hydrogen, from either external or internal origins providing as such aggressive effects. In this context, near surface displacement occurred, beside microcracking onset or growth, significant interfacial weakening, as critical forms of mechanical degradation. Metastable austenitic stainless 316L steel was selected, in order to provide a comprehensive study on bulk surfaces. Globalfindings on hydrogen effects were supplemented by nanoscale information. Only for the nanosection, Ti/Cu thinfilms were also included, namely an additional small-volume case. Samples have been charged with hydrogen under lowfugacity conditions and the outcoming effects have been sorted out by mechanical response tracking assisted by contact mechanics methodology. Nanoindentation and continuous scratch tests were utilized supplemented by Scanning Probe Microscopy (SPM) visualization. Local resolution provided remarkable input to the globalfindings, in terms of dislocation nucleation aspects, near surface modification, plastic localization and microfracture onset. In thin layers, the effective work of the adhesion was reduced indicating significant degradation that could be expressed quantitatively. Global/local benefits of the stainless steel system under study made it possible to apply multiscale models describing complex micromechanical processes. Рассматривается взаимодействие упруго-пластического твердого вещества с водородом. Средой служит свободный водород от внешнего или внутреннего источника, что создает агрессивный эффект. В результате происходило приповерхностное смещение, кроме начала образования микротрещин или их роста и значительного межфазного разупрочнения, что является основными причинами потери механической прочности. Для всестороннего изучения внутренней структуры поверхности была выбрана метастабильная аустенитная нержавеющая сталь 316Л. Общие данные о действии водорода были дополнены информацией на наноуровне. Для получения данных на наноуровне были изучены тонкие пленки Ti/Cu, т.е. проведены испытания на малом объеме материала. Образцы обрабатывали водородом в условиях низкой летучести, а результаты классифицировали по механическому отклику методом контактной механики. Применяли наноиндентирование и непрерывное царапанье с использованием сканирующей микроскопии. Результаты локальных исследований послужили значительным вкладом в общие выводы, включая зарождение дислокаций, приповерхностную модификацию, начало пластической локализации и микроразрушения. Эффективная работа адгезии в тонких слоях уменьшилась, что свидетельствует о существенном снижении механических свойств, выражаемом количественно. Преимущества глобального и локального подходов при изучении нержавеющей стали позволили использовать многоуровневые модели, описывающие комплексные микромеханические процессы. 2008 Article Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach / Y. Katz, N. Tymiak, W.W. Gerberich // Проблемы прочности. — 2008. — № 1. — С. 93-96. — Бібліогр.: 9 назв. — англ. 0556-171X http://dspace.nbuv.gov.ua/handle/123456789/48451 539.4 en Проблемы прочности Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Научно-технический раздел Научно-технический раздел |
| spellingShingle |
Научно-технический раздел Научно-технический раздел Katz, Y. Tymiak, N. Gerberich, W.W. Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach Проблемы прочности |
| description |
The current study is centered on elastic-plastic solid interaction with hydrogen. Here, the environment isfree hydrogen, from either external or internal origins providing as such aggressive effects. In this context, near surface displacement occurred, beside microcracking onset or growth, significant interfacial weakening, as critical forms of mechanical degradation. Metastable austenitic stainless 316L steel was selected, in order to provide a comprehensive study on bulk surfaces. Globalfindings on hydrogen effects were supplemented by nanoscale information. Only for the nanosection, Ti/Cu thinfilms were also included, namely an additional small-volume case. Samples have been charged with hydrogen under lowfugacity conditions and the outcoming effects have been sorted out by mechanical response tracking assisted by contact mechanics methodology. Nanoindentation and continuous scratch tests were utilized supplemented by Scanning Probe Microscopy (SPM) visualization. Local resolution provided remarkable input to the globalfindings, in terms of dislocation nucleation aspects, near surface modification, plastic localization and microfracture onset. In thin layers, the effective work of the adhesion was reduced indicating significant degradation that could be expressed quantitatively. Global/local benefits of the stainless steel system under study made it possible to apply multiscale models describing complex micromechanical processes. |
| format |
Article |
| author |
Katz, Y. Tymiak, N. Gerberich, W.W. |
| author_facet |
Katz, Y. Tymiak, N. Gerberich, W.W. |
| author_sort |
Katz, Y. |
| title |
Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach |
| title_short |
Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach |
| title_full |
Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach |
| title_fullStr |
Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach |
| title_full_unstemmed |
Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach |
| title_sort |
near surface modification affected by hydrogen interaction: global supplemented by local approach |
| publisher |
Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| publishDate |
2008 |
| topic_facet |
Научно-технический раздел |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/48451 |
| citation_txt |
Near Surface Modification Affected by Hydrogen Interaction: Global Supplemented by Local Approach / Y. Katz, N. Tymiak, W.W. Gerberich // Проблемы прочности. — 2008. — № 1. — С. 93-96. — Бібліогр.: 9 назв. — англ. |
| series |
Проблемы прочности |
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2023-10-18T18:09:38Z |
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2023-10-18T18:09:38Z |
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