کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5454788 1514363 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-destructive identification of unknown minor phases in polycrystalline bulk alloys using three-dimensional X-ray diffraction
ترجمه فارسی عنوان
شناسایی غیر مخرب فاز های ناشناخته جزئی در آلیاژهای پلی کربری با استفاده از پراش اشعه ایکس سه بعدی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
چکیده انگلیسی
Minor phases make considerable contributions to the mechanical and physical properties of metals and alloys. Unfortunately, it is difficult to identify unknown minor phases in a bulk polycrystalline material using conventional metallographic methods. Here, a non-destructive method based on three-dimensional X-ray diffraction (3DXRD) is developed to solve this problem. Simulation results demonstrate that this method is simultaneously able to identify minor phase grains and reveal their positions, orientations and sizes within bulk alloys. According to systematic simulations, the 3DXRD method is practicable for an extensive sample set, including polycrystalline alloys with hexagonal, orthorhombic and cubic minor phases. Experiments were also conducted to confirm the simulation results. The results for a bulk sample of aluminum alloy AA6061 show that the crystal grains of an unexpected γ-Fe (austenite) phase can be identified, three-dimensionally and nondestructively. Therefore, we conclude that the 3DXRD method is a powerful tool for the identification of unknown minor phases in bulk alloys belonging to a variety of crystal systems. This method also has the potential to be used for in situ observations of the effects of minor phases on the crystallographic behaviors of alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 124, February 2017, Pages 206-214
نویسندگان
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