Open AccessA positron annihilation study of defect accumulation in phosphorus- and titanium-alloyed austenitic stainless steels under electron irradiation at room temperature
Author(s) -
D.A. Perminov
Publication year - 2020
Publication title -
diagnostics resource and mechanics of materials and structures
Language(s) - English
Resource type - Journals
ISSN - 2410-9908
DOI - 10.17804/2410-9908.2020.6.027-034
Subject(s) - materials science , vacancy defect , austenite , irradiation , positron annihilation spectroscopy , titanium , electron beam processing , metallurgy , impurity , positron annihilation , phosphorus , electron , radiochemistry , annihilation , positron , condensed matter physics , nuclear physics , chemistry , microstructure , physics , organic chemistry
The effect of phosphorus and titanium additions on the accumulation of vacancy defects in Cr16Ni15Mo3 austenitic stainless steels under electron irradiation at room temperature is studied by positron annihilation spectroscopy. It is shown that, at this temperature, phosphorus has no noticeable effect on the accumulation of vacancy defects. This is due to the low mobility of vacancies and the low concentration of impurities. Titanium, due to its high concentration, enhances the accumulation of vacancy defects during irradiation, but this effect is weak.
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