低活化钢的氦离子辐照损伤行为

doi:10.13251/j.issn.0254-6051.2022.07.036

金属热处理 ›› 2022, Vol. 47 ›› Issue (7): 211-215.DOI: 10.13251/j.issn.0254-6051.2022.07.036

低活化钢的氦离子辐照损伤行为

夏礼栋^1,2, 霍晓杰², 张弛², 高达利¹, 吴长江¹, 张师军¹

1.中国石化北京化工研究院, 北京 100013;
2.清华大学材料学院, 北京 100084

收稿日期:2022-03-23 修回日期:2022-05-26 出版日期:2022-07-25 发布日期:2022-08-12
通讯作者: 张师军,教授级高级工程师,E-mail:zhangsj.bjhy@sinopec.com
作者简介:夏礼栋(1993—),男,工程师,博士,主要研究方向为新材料研发,E-mail:xiald.bjhy@sinopec.com。

Helium ion irradiation damage behavior in a reduced activation steel

Xia Lidong^1,2, Huo Xiaojie², Zhang Chi², Gao Dali¹, Wu Changjiang¹, Zhang Shijun¹

1. Sinopec Beijing Research Institute of Chemical Industry, Beijing 100013, China;
2. School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Received:2022-03-23 Revised:2022-05-26 Online:2022-07-25 Published:2022-08-12

摘要/Abstract

摘要： 利用氦离子辐照研究了不同辐照温度下低活化钢的辐照损伤行为,采用透射电镜和纳米压痕仪测量和表征了辐照引起的缺陷组织和硬化效应,并分析了两者之间的影响关系。结果表明,氦离子辐照造成的组织变化主要包括气泡和M₂₃C₆相的粗化。气泡在晶界上发生聚集,辐照剂量越大,气泡密度越高;辐照温度越高,气泡尺寸越大、密度越低。辐照之后,低活化钢硬度提高,且辐照温度上升,硬化效应降低。辐照硬化值与缺陷组织的尺寸和密度相关,高密度的小尺寸气泡是氦离子辐照硬化的主要因素,辐照温度升高,气泡密度降低,辐照硬化减弱。

关键词: 低活化钢, 氦离子辐照, 缺陷组织, 辐照硬化

Abstract: Irradiation damage behavior of a reduced activation steel was studied by carrying out helium ion irradiation at different temperatures, and the irradiation-induced defect microstructure and hardening effect were observed and analyzed by means of transmission electron microscope (TEM) and nanoindenter respectively. The results show that the defect microstructure induced by irradiation mainly includes bubbles and coarsening of M₂₃C₆ precipitate. Bubbles aggregate on grain boundaries, the bubble density increases with the increase of irradiation intensity, and the bubble size increases while the density decreases with the increase of irradiation temperature. The hardness of the reduced activation steel increases after irradiation, while the temperature rising weakens this effect. Irradiation hardening is related to size and density of defect microstructure, and the high density of small bubbles contributes mainly to hardening. As the irradiation temperature rises, the bubble density decreases sharply, which weakens irradiation hardening.

Key words: reduced activation steel, helium ion irradiation, defect microstructure, irradiation hardening

中图分类号:

TG142

夏礼栋, 霍晓杰, 张弛, 高达利, 吴长江, 张师军. 低活化钢的氦离子辐照损伤行为[J]. 金属热处理, 2022, 47(7): 211-215.

Xia Lidong, Huo Xiaojie, Zhang Chi, Gao Dali, Wu Changjiang, Zhang Shijun. Helium ion irradiation damage behavior in a reduced activation steel[J]. Heat Treatment of Metals, 2022, 47(7): 211-215.

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低活化钢的氦离子辐照损伤行为

Helium ion irradiation damage behavior in a reduced activation steel

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