کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7970484 | 1514387 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Imaging and characterization of γⲠand γⳠnanoparticles in Inconel 718 by EDX elemental mapping and FIB-SEM tomography
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Microstructural characterization of Inconel 718 superalloy after three different heat treatment variants was performed by electron microscopy and electron tomography techniques, taking advantage of recent development in quantitative electron microscopy. Distribution maps of the chemical elements, collected by ChemiSTEM⢠EDX system, offer a clear contrast between γâ², γâ³, and the γ matrix. It was found that the γⲠphase contains mainly Ni, Al, and Ti, while the γⳠphase contains Ni, Nb, and Ti. Thus application of the Al and Nb STEM-EDX elemental maps enables identification and size measurements of γⲠand γⳠnanoparticles. 3D morphology of γⲠand γⳠprecipitates was examined by electron microscopy and FIB-SEM tomography. Employed methods revealed that in all three heat treatment variants the γⲠparticles are almost spheroidal while the γⳠprecipitates are mainly elongated-disc shaped. However, the precipitate sizes differed for each variant contributing to differences in the yield strength. Tomographic images were used for estimation of the volume fraction of the both strengthening phases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 100, February 2015, Pages 74-80
Journal: Materials Characterization - Volume 100, February 2015, Pages 74-80
نویسندگان
K. Kulawik, P.A. Buffat, A. Kruk, A.M. Wusatowska-Sarnek, A. Czyrska-Filemonowicz,