Nanoindentation Study on Depth-Dependent Hardness and Embrittlement of He Ion-Irradiated Fe–9Cr Alloy

IF 3.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Metals and Materials International Pub Date : 2025-01-06 DOI:10.1007/s12540-024-01869-5

Hoe-Yeon Jeong, Seunghyun Lee, Sangbeen Lee, Dae-sik Chang, Jung Gu Lee, Eun-chae Jeon

{"title":"Nanoindentation Study on Depth-Dependent Hardness and Embrittlement of He Ion-Irradiated Fe–9Cr Alloy","authors":"Hoe-Yeon Jeong, Seunghyun Lee, Sangbeen Lee, Dae-sik Chang, Jung Gu Lee, Eun-chae Jeon","doi":"10.1007/s12540-024-01869-5","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigates the effects of neutron irradiation and high-temperature environments on the embrittlement and ductility of ARAA steel, a structural material for fusion reactors, using nanoindentation techniques. Neutron irradiation in fusion environments causes material brittleness, increasing the risk of cracks and compromising reactor safety. Conversely, high temperatures enhance ductility, potentially offsetting embrittlement. This research employs nanoindentation techniques to analyze embrittlement and softening, using He ion irradiation under temperature controls to simulate neutron effects, enabling faster damage assessment and providing insights into material behavior. The results demonstrate that irradiation significantly increases hardness, particularly at shallow depths, while higher temperatures generally reduce hardness across the full depth. Under combined irradiation dose and temperature conditions, He ion irradiation primarily caused embrittlement, but the softening effect from higher temperatures reduced damage depth. Embrittlement was deepest at room temperature and decreased with rising irradiation temperature, with the predicted embrittlement depth limited to 3.0 μm under combined conditions.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 6","pages":"1557 - 1568"},"PeriodicalIF":3.3000,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metals and Materials International","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12540-024-01869-5","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

This study investigates the effects of neutron irradiation and high-temperature environments on the embrittlement and ductility of ARAA steel, a structural material for fusion reactors, using nanoindentation techniques. Neutron irradiation in fusion environments causes material brittleness, increasing the risk of cracks and compromising reactor safety. Conversely, high temperatures enhance ductility, potentially offsetting embrittlement. This research employs nanoindentation techniques to analyze embrittlement and softening, using He ion irradiation under temperature controls to simulate neutron effects, enabling faster damage assessment and providing insights into material behavior. The results demonstrate that irradiation significantly increases hardness, particularly at shallow depths, while higher temperatures generally reduce hardness across the full depth. Under combined irradiation dose and temperature conditions, He ion irradiation primarily caused embrittlement, but the softening effect from higher temperatures reduced damage depth. Embrittlement was deepest at room temperature and decreased with rising irradiation temperature, with the predicted embrittlement depth limited to 3.0 μm under combined conditions.

Graphical Abstract

查看原文本刊更多论文

He离子辐照Fe-9Cr合金硬度和脆度随深度变化的纳米压痕研究

本研究利用纳米压痕技术研究了中子辐照和高温环境对聚变反应堆结构材料ARAA钢的脆化和延展性的影响。核聚变环境中的中子辐照会导致材料脆性，增加裂缝的风险，危及反应堆安全。相反，高温提高了延展性，潜在地抵消了脆化。本研究采用纳米压痕技术来分析材料的脆化和软化，在温度控制下使用He离子辐照来模拟中子效应，从而实现更快的损伤评估，并提供对材料行为的深入了解。结果表明，辐照显著提高了硬度，特别是在浅深度，而较高的温度通常会降低整个深度的硬度。在辐照剂量和温度联合作用下，He离子辐照主要引起脆化，但高温的软化作用降低了损伤深度。室温下脆化最深，随辐照温度的升高而减小，复合条件下的预测脆化深度限制在3.0 μm。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.