کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1567814 999875 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study by EELS of helium bubbles in a martensitic steel
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Study by EELS of helium bubbles in a martensitic steel
چکیده انگلیسی

This work presents measurements of the helium density and pressure in small bubbles in a martensitic steel, which is a vital first step towards identifying their role in the microstructural mechanisms determining the macroscopic properties of the material. Electron Energy-Loss Spectroscopy in the Scanning Transmission Electron Microscope has been used to analyse individual bubbles. The energy shift of the 1s → 2p transition and the helium density have been measured for each bubble analysed. The pressure inside the bubbles has been calculated from the helium density using an equation of state. In these bubbles, the values for the helium pressure seem to be smaller than the equilibrium pressure, and agree in trend with the findings of previous studies, although our results extend to smaller radii and higher pressures.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 393, Issue 1, 15 August 2009, Pages 102–107
نویسندگان
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