کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1599909 | 1515854 | 2015 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deformation mechanism in NiAl single crystals at low temperatures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Deformation mechanism in NiAl single crystals at low temperatures Deformation mechanism in NiAl single crystals at low temperatures](/preview/png/1599909.png)
چکیده انگلیسی
Available data on the temperature dependence of yield stress and of associated activation volume of high-purity NiAl single crystals between 76 and 205Â K have been analyzed within the framework of a solid-solution hardening model, which is based on the concept of depinning of an edge-dislocation segment from several randomly dispersed, isolated, point defects simultaneously. The vacancies in NiAl single crystals act as point-defect obstacles to the stress-assisted thermally-activated glide of edge dislocations, and their concentration is estimated as about 10Â at.%. The product of yield stress and associated activation volume (â0.146Â eV) is found to be independent of temperature and yield stress, as envisaged in the model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 57, February 2015, Pages 93-97
Journal: Intermetallics - Volume 57, February 2015, Pages 93-97
نویسندگان
M.Z. Butt, Dilawar Ali,