کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7877187 1509534 2018 35 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Overview on micro- and nanomechanical testing: New insights in interface plasticity and fracture at small length scales
ترجمه فارسی عنوان
بررسی اجمالی بر تست های میکرو و نانومکانیک: بینش جدید در پلاستیکی و شکستگی در مقیاس کوچک
کلمات کلیدی
آزمایشی در مقیاس کوچک، درجه حرارت، مرز دانه، چند لایه، شکستگی، سختی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Micro- and nanomechanical testing has seen a rapid development over the last decade with miniaturized test rigs and MEMS-based devices providing access to the mechanical properties and performance of materials from the micrometer down to the tenths of nanometer length scale. In this overview, we summarize firstly the different testing concepts with excursions into recent imaging and diffraction developments, which turn micro- and nanomechanical testing into “quantitative mechanical microscopy” by resolving the underlying material physics and simultaneously providing mechanical properties. A special focus is laid on the pitfalls of micro-compression testing with its stringent boundary conditions often hampering reliable experiments. Additionally, the challenges of instrumented micro- and nanomechanical testing at elevated temperature are summarized. From the wide variety of research topics employing micro- and nanomechanical testing of materials we focus here on miniaturized samples and test rigs and provide three examples to elucidate the state-of-the-art of the field: (i) probing the “strength” of individual grain boundaries in metals, (ii) temperature dependent deformation mechanisms in metallic nanolayered and -alloyed structures, and (iii) the prospects and challenges of fracture studies employing micro- and nanomechanical testing of brittle and ductile monolithic materials, and materials containing interfaces. Proven concepts and new endeavors are reported for the topics discussed in this overview.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 142, 1 January 2018, Pages 248-282
نویسندگان
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