کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1570746 1514374 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of dislocation density by electron backscatter diffraction and X-ray line profile analysis in ferrous lath martensite
ترجمه فارسی عنوان
تعیین چگالی جابجایی با استفاده از پراش پرتوهای الکترونی و تحلیل پروفیل خطی اشعه ایکس در مارتنزیت ورقه آهنی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
چکیده انگلیسی

The microstructure and the dislocation density in as-quenched ferrous lath martensite were studied by different methods. The blocks, packets and variants formed due to martensitic transformation were identified and their sizes were determined by electron backscatter diffraction (EBSD). Concomitant transmission electron microscopy (TEM) investigation revealed that the laths contain subgrains with the size between 50 and 100 nm. A novel evaluation procedure of EBSD images was elaborated for the determination of the density and the space distribution of geometrically necessary dislocations from the misorientation distribution. The total dislocation density obtained by X-ray diffraction line profile analysis was in good agreement with the value determined by EBSD, indicating that the majority of dislocations formed due to martensitic transformation during quenching are geometrically necessary dislocations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 113, March 2016, Pages 117–124
نویسندگان
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