The Effect of Strain Rate on Hydrogen-Assisted Deformation Behavior and Microstructure in AISI 316L Austenitic Stainless Steel

Author:

Astafurova Elena1ORCID,Fortuna Anastasiya2,Melnikov Evgenii1,Astafurov Sergey1

Affiliation:

1. Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, 634055 Tomsk, Russia

2. Department of Physical Materials Science, National University of Science and Technology MISiS, 119049 Moscow, Russia

Abstract

The influence of strain rate in the interval of (10−5–10−3) 1/s on room temperature tensile behavior, dislocation arrangement, deformation mechanisms, and fracture of austenitic stainless steel AISI 316L electrochemically charged with hydrogen was investigated. Independently on strain rate, hydrogen charging provides the increase in the yield strength of the specimens due to a solid solution hardening of austenite, but it slightly influences deformation behavior and strain hardening of the steel. Simultaneously, hydrogen charging assists surface embrittlement of the specimens during straining and reduces an elongation to failure, which both are strain rate-dependent parameters. Hydrogen embrittlement index decreases with increase in strain rate, which testifies the importance of hydrogen transport with dislocations during plastic deformation. The stress–relaxation tests directly confirm the hydrogen-enhanced increase in the dislocation dynamics at low strain rates. The interaction of the hydrogen atoms with dislocations and hydrogen-associated plastic flow are discussed.

Funder

Government research assignment for ISPMS SB RAS

Publisher

MDPI AG

Subject

General Materials Science

Reference22 articles.

1. Recent developments in stainless steels;Lo;Mater. Sci. Eng. R Rep.,2009

2. Nagumo, M. (2016). Fundamentals of Hydrogen Embrittlement, Springer.

3. Hydrogen embrittlement phenomena and mechanisms;Lynch;Corros. Rev.,2012

4. A Mechanistic Theory of Hydrogen Embrittlement of Steels;Oriani;Phys. Chem. Chem. Phys.,1972

5. Mobility of dislocations in the iron-based C-, N-, H-solid solutions measured using internal friction: Effect of electron structure;Gavrilyuk;J. Alloys Compd.,2021

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3