Effect of prolonged holding under contact loading on the peculiarities of phase changes in silicon
It was shown that prolonged holding under the peak load during indentation of Si (100) led to the creep of material even at room temperature that became possible due to the phase transition into more plastic metallic b-Sn phase. The end structural phases in the indentation zone, studied by micro-...
Збережено в:
Дата: | 2015 |
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Автори: | , , |
Формат: | Стаття |
Мова: | English |
Опубліковано: |
Фізико-механічний інститут ім. Г.В. Карпенка НАН України
2015
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Назва видання: | Фізико-хімічна механіка матеріалів |
Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/135757 |
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Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
Цитувати: | Effect of prolonged holding under contact loading on the peculiarities of phase changes in silicon / O. Shikimaka, A. Prisacaru, A. Burlacu // Фізико-хімічна механіка матеріалів. — 2015. — Т. 51, № 3. — С. 100-106. — Бібліогр.: 15 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of UkraineРезюме: | It was shown that prolonged holding under the peak load during indentation of Si (100) led
to the creep of material even at room temperature that became possible due to the phase
transition into more plastic metallic b-Sn phase. The end structural phases in the indentation
zone, studied by micro-Raman spectroscopy were found to be affected by the longer
holding under the load and demonstrated more intensive peaks for amorphous phase (a-Si)
in the depth of the indentation comparatively with those for short holding indentations.
It was suggested that this effect was caused by the activation of the dislocation mechanism
of a-Si formation, as a result of longer shear stresses action under prolonged holding. This
fact induced some changes in the kinetics of the unloading events, which demonstrated the
tendency to the “kink pop-out” formation instead of typical “pop-out” and “elbow”. |
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