کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10620480 | 988631 | 2012 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Submicron-scale depth profiling of residual stress in amorphous materials by incremental focused ion beam slotting
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper reports a new technique, namely the incremental micro-slotting cutting method, for the investigation of residual stress profiles as a function of depth on a micron scale. The residual-stresses in a peened bulk-metallic glass (BMG) (Zr50Cu40Al10, in atomic per cent) are estimated using finite-element analysis of the surface relaxations, as measured by digital image correlation analysis from field-emission gun scanning electron microscopy images, which occur when a micro-slot is stepwise micro-machined by focused ion beam. The calculation algorithm, which solves this inverse problem of residual-stress estimation, is based on the unit pulses method and is stabilized by a Tikhonov regularization scheme. It is demonstrated on a peened BMG that the new technique allows residual-stress profiles in amorphous materials to be inferred with high spatial definition (â¼400 nm). Observations point to the scalability of this method to study residual-stress profiles in volumes as small as 1 Ã 1 Ã 0.2 μm3 or less, and is particularly well suited to glasses, but can also be applied to crystalline materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 60, Issue 5, March 2012, Pages 2337-2349
Journal: Acta Materialia - Volume 60, Issue 5, March 2012, Pages 2337-2349
نویسندگان
B. Winiarski, A. Gholinia, J. Tian, Y. Yokoyama, P.K. Liaw, P.J. Withers,