Positron beam studies on the irradiation response of FeCrCoNi upon He ion implantation

被引：3
作者：
Abhaya, S. [1 ,2 ]
Rajaraman, R. [1 ,2 ]
David, C. [1 ,2 ]
机构：
[1] Indira Gandhi Ctr Atom Res, Mat Sci Grp, Kalpakkam 603102, Tamil Nadu, India
[2] HBNI, Kalpakkam 603102, Tamil Nadu, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 898卷
关键词：
High entropy alloys; Implantation induced defects; Positron beam; Helium bubbles; HELIUM BUBBLE-GROWTH; ANNIHILATION; NI; SPECTROSCOPY; BEHAVIOR; ALLOYS; NICKEL;
D O I：
10.1016/j.jallcom.2021.162776
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Positron beam-based Doppler broadening results on He ion-implanted FeCrCoNi show distinct changes in defect-sensitive S-parameter corresponding to the formation of helium-vacancy complexes, nucleation/ growth of helium bubbles, and finally the helium bubble rupture, with isochronal annealing. Data analyses of the positron beam-based ratio curves provide clear information on the kinetics of bubble growth and rupture. The difference data in S-parameter (Delta S), which corresponds to the bubble growth, displays a maximum at 1123 K, with annealing temperature. Comparing the Delta S value to that reported for nickel, it is concluded that FeCrCoNi has higher bubble growth resistance than nickel. (c) 2021 Elsevier B.V. All rights reserved.
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页数：7
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