کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1672446 1008933 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Plane stress fracture toughness of freestanding nanoscale thin films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Plane stress fracture toughness of freestanding nanoscale thin films
چکیده انگلیسی

Fracture toughness values of notched thin films were measured in-situ in the scanning electron microscope using a micro-machined experimental setup. Freestanding specimens, 200–300 nm thick, 2 μm wide and about 10 μm long, were fabricated from extruded gold micro-wire and sputtered aluminum films. The obtained values, 0.45 MPa m1/2 for gold and 0.51 MPa m1/2 for aluminum are on the same order of those for brittle materials. Such reduction in fracture toughness is discussed in light of reduced dislocation activities in the severely work hardened gold and dislocation starved aluminum specimens.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 516, Issue 18, 31 July 2008, Pages 6444–6447
نویسندگان
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