Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests
A detailed knowledge of dependence of mechanical properties on orientation in materials prepared by directional processes may present an important factor influencing the design of construction parts. Toward this end, the compressive creep testing of short specimens may be useful. Three different mag...
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| Видавець: | Інститут проблем міцності ім. Г.С. Писаренко НАН України |
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| Дата: | 2008 |
| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут проблем міцності ім. Г.С. Писаренко НАН України
2008
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| Назва видання: | Проблемы прочности |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/48436 |
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| Цитувати: | Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests / F. Dobes, P. Perez, K. Milicka, G. Garces, P. Adeva // Проблемы прочности. — 2008. — № 1. — С. 125-128. — Бібліогр.: 14 назв. — англ. |
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irk-123456789-484362013-08-19T18:13:35Z Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests Dobes, F. Perez, P. Milieka, K. Garces, G. Adeva, P. Научно-технический раздел A detailed knowledge of dependence of mechanical properties on orientation in materials prepared by directional processes may present an important factor influencing the design of construction parts. Toward this end, the compressive creep testing of short specimens may be useful. Three different magnesium-based materials were subjected to this testing: (i) pure magnesium, (ii) magnesium matrix composite reinforced with 10 vol.% of titanium, and (iii) magnesium alloy WE54. All three materials were prepared through a powder metallurgical route with final hot extrusion. The specimensfor creep tests were cut in such a way that their longitudinal axis (i.e., the direction of compressive creep stress) and the axis of extruded bar contained a predestined angle. Two extreme cases can be observed: In pure Mg and in Mg-Ti composite, the dependence of the creep rate is very sensitive to the orientation especially at small inclinations from extrusion axis. The greatest creep resistance is observed in specimens with stress axis parallel to the extrusion axis, the lowest at declinationsfrom 45 to 90°. On the other hand, in WE54 no orientation dependence was observed. Possible explanations of the behaviour based on microstructural observations are discussed. Глубокое понимание зависимости механических свойств от ориентации волокон в материалах, полученных методами направленного воздействия, может быть важным фактором в создании структурных элементов. Исходя из этого, испытания коротких образцов на ползучесть при сжатии могут дать полезную информацию. Испытания проводили на трех различных материалах на основе магния: чистый магний; композит с магниевой матрицей, упрочненный 10 об.% титана; магниевый сплав WES4. Все три материала были получены методами порошковой металлургии и горячей экструзии. Образцы вырезали таким образом, чтобы их продольная ось (т.е. направление напряжения ползучести при сжатии) и ось экструдированного образца имели заданный угол. Для чистого магния и Mg-Ti композита зависимость скорости ползучести существен но зависит от ориентации, особенно при не большом отклонении от оси экструзии. Наибольшее сопротивление ползучести имели образцы с осью напряжений, параллельной оси экструзии, наименьшее - при отклонении на 45°-90°. В сплаве WES4 не наблюдалось зависимости от ориентации. Подобное поведение может быть связано с микроструктурой материала. 2008 Article Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests / F. Dobes, P. Perez, K. Milicka, G. Garces, P. Adeva // Проблемы прочности. — 2008. — № 1. — С. 125-128. — Бібліогр.: 14 назв. — англ. 0556-171X http://dspace.nbuv.gov.ua/handle/123456789/48436 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 Dobes, F. Perez, P. Milieka, K. Garces, G. Adeva, P. Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests Проблемы прочности |
| description |
A detailed knowledge of dependence of mechanical properties on orientation in materials prepared by directional processes may present an important factor influencing the design of construction parts. Toward this end, the compressive creep testing of short specimens may be useful. Three different magnesium-based materials were subjected to this testing: (i) pure magnesium, (ii) magnesium matrix composite reinforced with 10 vol.% of titanium, and (iii) magnesium alloy WE54. All three materials were prepared through a powder metallurgical route with final hot extrusion. The specimensfor creep tests were cut in such a way that their longitudinal axis (i.e., the direction of compressive creep stress) and the axis of extruded bar contained a predestined angle. Two extreme cases can be observed: In pure Mg and in Mg-Ti composite, the dependence of the creep rate is very sensitive to the orientation especially at small inclinations from extrusion axis. The greatest creep resistance is observed in specimens with stress axis parallel to the extrusion axis, the lowest at declinationsfrom 45 to 90°. On the other hand, in WE54 no orientation dependence was observed. Possible explanations of the behaviour based on microstructural observations are discussed. |
| format |
Article |
| author |
Dobes, F. Perez, P. Milieka, K. Garces, G. Adeva, P. |
| author_facet |
Dobes, F. Perez, P. Milieka, K. Garces, G. Adeva, P. |
| author_sort |
Dobes, F. |
| title |
Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests |
| title_short |
Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests |
| title_full |
Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests |
| title_fullStr |
Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests |
| title_full_unstemmed |
Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests |
| title_sort |
estimation of anisotropy of mechanical properties in mg alloys by means of compressive creep tests |
| publisher |
Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| publishDate |
2008 |
| topic_facet |
Научно-технический раздел |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/48436 |
| citation_txt |
Estimation of anisotropy of mechanical properties in Mg alloys by means of compressive creep tests / F. Dobes, P. Perez, K. Milicka, G. Garces, P. Adeva // Проблемы прочности. — 2008. — № 1. — С. 125-128. — Бібліогр.: 14 назв. — англ. |
| series |
Проблемы прочности |
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2023-10-18T18:09:37Z |
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2023-10-18T18:09:37Z |
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