Positron study of alpha particles effect on oxide-dispersion-strengthened steels

被引：0
|
作者：
Veternikova, J. [1 ]
Slugen, V. [1 ]
Stancek, S. [1 ]
Degmova, J. [1 ]
Sabelova, V. [1 ]
Sojak, S. [1 ]
Petriska, M. [1 ]
Hinca, R. [1 ]
机构：
[1] Slovak Tech Univ, Fac Elect Engn & Informat Technol, Inst Nucl & Phys Engn, Ilkovicova 3, Bratislava 81219, Slovakia
来源：
16TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION (ICPA-16) | 2013年 / 443卷
关键词：
D O I：
10.1088/1742-6596/443/1/012016
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Microstructure of oxide-dispersion-strengthened steels with different chromium content - MA 956 (20% Cr), ODM 751 (16% Cr) and MA 957 (14% Cr) were studied by positron annihilation lifetime spectroscopy. Samples were measured before and after helium ion implantation (Hc(2+)); therefore microstructure changes and radiation resistance to alpha particles of these steels were observed. Defect accumulation due to the radiation treatment was proven in all investigated materials. After ion implantation, mean lifetimes increased of about similar to 10 ps, which indicates significant change in microstructure. According to calculations of a defect volume from defect concentration and pre-dominant size of defects, ODM 751 is the most resistant steel in comparison to other investigated materials.
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页数：4
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