Hot-cracking of high-alloyed steels evaluated by wedge rolling test
We present a new methodology of determination of hot-cracking f metallic materials, which is based on laboratory application of the wedge rolling test and computer processing of the results obtained. The experiment was made with selected new types of high-alloyed free-cutting (ferritic and austeniti...
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| Дата: | 2008 |
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| Автори: | , , , , , , , |
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| Мова: | English |
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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/123456789/48459 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Hot-cracking of high-alloyed steels evaluated by wedge rolling test / I. Schindler, P. Suchanek, S. Rusz, P. Kubecka, J. Sojka, M. Heger, M. Liska, M. Hlisnikovsky // Проблемы прочности. — 2008. — № 1. — С. 60-63. — Бібліогр.: 3 назв. — англ. |
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irk-123456789-484592013-08-19T22:38:59Z Hot-cracking of high-alloyed steels evaluated by wedge rolling test Schindler, I. Suchanek, P. Rusz, S. Kubecka, P. Sojka, J. Heger, M. Liska, M. Hlisnikovsky, M. Научно-технический раздел We present a new methodology of determination of hot-cracking f metallic materials, which is based on laboratory application of the wedge rolling test and computer processing of the results obtained. The experiment was made with selected new types of high-alloyed free-cutting (ferritic and austenitic) steels. The initial specimens underwent an additional modification enabling easier development of cracks which consisted in milling out of the defined V-shaped notches on a side wall of a specimen. After taking specimens from the rolled material, we performed the metallographic analysis of microstructures by means of optical microscopy as well as a SEM analysis of the cracks. The resulting microstructure in the propagating crack vicinity was markedly influenced by this fracture. In the crack vicinity, a noticeable refinement of grains was observed due to the stress-induced recrystallization and occurrence of deformation zones that were pronounced by the rolled-out and stretched sulphides. As a rule, fractures were created by the ductile failure with visible pits, caused by tearing of sulphides from the material. Susceptibility of the studied steels to hot-cracking was evaluated and compared. Представлен новый метод определения горячих трещин в металлических материалах, основанный на лабораторной методике прокатки на клин и компьютерной обработке результатов. Эксперименты выполняли на отобранных высоколегированных автоматных (ферритных и аустенитных) сталях нового типа. В исходных образцах фрезеровали У-образные надрезы на их боковой стороне, что облегчало развитие трещин. После вырезки образцов из прокатанного материала выполняли металлографический анализ микроструктуры с помощью оптической микроскопии и анализ трещин с помощью сканирующей микроскопии. Разрушение в значительной мере влияло на микроструктуру, возникшую вблизи развивающейся трещины. Вблизи трещины наблюдалось заметное изменение зерен вследствие рекристаллизации, вызванной напряжениями, и появления зон деформирования, соответствующих прокатанным и вытянутым сульфидам. Как правило, разрушение возникало за счет пластического разрыва с видимыми ямками, вызванного отрывом сульфидов от материала. Оценивалась и сравнивалась склонность изучаемых сталей к образованию горячих трещин. 2008 Article Hot-cracking of high-alloyed steels evaluated by wedge rolling test / I. Schindler, P. Suchanek, S. Rusz, P. Kubecka, J. Sojka, M. Heger, M. Liska, M. Hlisnikovsky // Проблемы прочности. — 2008. — № 1. — С. 60-63. — Бібліогр.: 3 назв. — англ. 0556-171X http://dspace.nbuv.gov.ua/handle/123456789/48459 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 Schindler, I. Suchanek, P. Rusz, S. Kubecka, P. Sojka, J. Heger, M. Liska, M. Hlisnikovsky, M. Hot-cracking of high-alloyed steels evaluated by wedge rolling test Проблемы прочности |
| description |
We present a new methodology of determination of hot-cracking f metallic materials, which is based on laboratory application of the wedge rolling test and computer processing of the results obtained. The experiment was made with selected new types of high-alloyed free-cutting (ferritic and austenitic) steels. The initial specimens underwent an additional modification enabling easier development of cracks which consisted in milling out of the defined V-shaped notches on a side wall of a specimen. After taking specimens from the rolled material, we performed the metallographic analysis of microstructures by means of optical microscopy as well as a SEM analysis of the cracks. The resulting microstructure in the propagating crack vicinity was markedly influenced by this fracture. In the crack vicinity, a noticeable refinement of grains was observed due to the stress-induced recrystallization and occurrence of deformation zones that were pronounced by the rolled-out and stretched sulphides. As a rule, fractures were created by the ductile failure with visible pits, caused by tearing of sulphides from the material. Susceptibility of the studied steels to hot-cracking was evaluated and compared. |
| format |
Article |
| author |
Schindler, I. Suchanek, P. Rusz, S. Kubecka, P. Sojka, J. Heger, M. Liska, M. Hlisnikovsky, M. |
| author_facet |
Schindler, I. Suchanek, P. Rusz, S. Kubecka, P. Sojka, J. Heger, M. Liska, M. Hlisnikovsky, M. |
| author_sort |
Schindler, I. |
| title |
Hot-cracking of high-alloyed steels evaluated by wedge rolling test |
| title_short |
Hot-cracking of high-alloyed steels evaluated by wedge rolling test |
| title_full |
Hot-cracking of high-alloyed steels evaluated by wedge rolling test |
| title_fullStr |
Hot-cracking of high-alloyed steels evaluated by wedge rolling test |
| title_full_unstemmed |
Hot-cracking of high-alloyed steels evaluated by wedge rolling test |
| title_sort |
hot-cracking of high-alloyed steels evaluated by wedge rolling test |
| publisher |
Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| publishDate |
2008 |
| topic_facet |
Научно-технический раздел |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/48459 |
| citation_txt |
Hot-cracking of high-alloyed steels evaluated by wedge rolling test / I. Schindler, P. Suchanek, S. Rusz, P. Kubecka, J. Sojka, M. Heger, M. Liska, M. Hlisnikovsky // Проблемы прочности. — 2008. — № 1. — С. 60-63. — Бібліогр.: 3 назв. — англ. |
| series |
Проблемы прочности |
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