کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1580288 | 1514834 | 2009 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Indentation-induced subsurface damage in silicon particles of Al-Si alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Indentation-induced subsurface damage in silicon particles of Al-Si alloys Indentation-induced subsurface damage in silicon particles of Al-Si alloys](/preview/png/1580288.png)
چکیده انگلیسی
Damage microstructures generated beneath the Vickers indentation applied to the silicon particles in an Al-18.5Â wt.%Si alloys were studied. Plastic deformation at low loads and volume expansion due to subsurface crack formation at high loads (>650Â mN) were responsible for pile-up formations around the indentations. The probability of lateral cracks reaching the surface and causing particle fracture was shown to obey Weibull statistics with a low modulus. The indentation pressure estimated as 19.3Â GPa induced the transformation of diamond cubic Si-I to bcc Si-III and rhombohedral Si-XII, as observed by Raman microspectroscopy. Cross-sectional FIB and TEM revealed a semi-circular plastic core and subsurface lateral crack pattern below the residual indents and a localized amorphous zone at the median crack boundary immediately below the plastic core.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 527, Issues 1â2, 15 December 2009, Pages 387-396
Journal: Materials Science and Engineering: A - Volume 527, Issues 1â2, 15 December 2009, Pages 387-396
نویسندگان
S. Bhattacharya, A.R. Riahi, A.T. Alpas,