Slow positron beam and nanoindentation study of irradiation-related defects in reactor vessel steels
Slow positron beam and nanoindentation study of irradiation-related defects in reactor vessel steels
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反应堆容器钢辐照相关缺陷的慢正电子束和纳米压痕研究
DOI：
10.1016/j.jnucmat.2014.04.008
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发表时间：
2014-08
影响因子：
3.1
通讯作者：
Qian, Wangjie
中科院分区：
文献类型：
--
作者：
Zhang, Chonghong;Ren, Ai;Xu, Chaoliang;Qian, Wangjie
为了了解反应堆容器钢辐射后硬化的性质，对中国 A508-3 钢进行了能量为 240 keV 的质子注入，分别达到 2.5 × 1016、5.5 × 1016、1.1 × 1017 和 2.5 × 1017ions cm−2。通过能量可变正电子束多普勒展宽技术检测空位型缺陷，然后进行纳米压痕测量以研究质子诱导硬化效应。结果表明，辐照后S参数随着正电子入射能量的变化而增加，并且由于辐照损伤，表面附近S参数的增加率大于本体中的增加率。空位型缺陷的尺寸随着剂量的增加而增加。辐照诱导硬化表明，平均硬度随着剂量的增加而增加。此外，基于Kasada方法发现了正电子湮没参数与硬度之间的直接相关性。
In order to understand the nature of the hardening after radiation in reactor vessel steels, China A508-3 steels were implanted by proton with an energy of 240 keV up to 2.5 × 1016, 5.5 × 1016, 1.1 × 1017, and 2.5 × 1017ions cm−2, respectively. Vacancy type defects were detected by energy-variable positron beam Doppler broadening technique and then nanoindentation measurements were performed to investigate proton-induced hardening effects. The results showed thatS-parameter increased as a function of positron incident energy after irradiation, and the increasing rate of theS-parameter near the surface was larger than that in the bulk due to radiation damage. The size of vacancy type defects increased with dose. Irradiation induced hardening was shown that the average hardness increased with dose. Moreover a direct correlation between positron annihilation parameter and hardness was found based on Kasada method.
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影响因子：
1
作者：
G. Odette;G. Lucas
通讯作者：
G. Odette;G. Lucas
DOI：
10.1016/j.nimb.2012.11.090
发表时间：
2013-07
影响因子：
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影响因子：
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作者：
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