Application of the Positron Lifetime Spectroscopy to the Study of Microstructural Defects in Steel | ||||
Egyptian Journal of Solids | ||||
Article 5, Volume 26, Issue 2, 2003, Page 165-174 PDF (442.31 K) | ||||
DOI: 10.21608/ejs.2003.150148 | ||||
![]() | ||||
Abstract | ||||
Positron annihilation lifetime technique has been applied to study the microstructural changes in steel after heat treatment (tempering process). Positron lifetime spectra for the tempered samples in sandwich configuration with the positron source were accumulated at room temperature using a conventional fast-fast coincidence timing system. The measured lifetime spectra have been analyzed. A correlation between the macroscopic mechanical properties and the positron annihilation parameters has been established. Meanwhile, with the aid of image analysis method, the American Standards for Tools and Materials (ASTM) grain size in the tempered samples was determined. The two state trapping model has been applied for interpretation of the experimental results. | ||||
Statistics Article View: 65 PDF Download: 125 |
||||