Recent Studies of Hydrogen-related Defects in Iron-based Materials

Chiari Luca; Fujinami Masanori

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Recent Studies of Hydrogen-related Defects in Iron-based Materials

机译：Recent Studies of Hydrogen-related Defects in Iron-based Materials

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The interactions between hydrogen, dislocations and vacancies that lead to the hydrogen embrittlement of iron-based materials have remained largely unknown with major impediments for the development of the infrastructure for hydrogen transport and storage. Recent studies of the hydrogen-induced lattice defects formed in pure iron and common austenitic stainless steels by positron annihilation lifetime spectroscopy have provided a breakthrough in understanding the controlling factors of the hydrogen embrittlement process. In this review, the main results of those studies are summarized and discussed together with current knowledge of hydrogen-related defects. The formation of vacancy-hydrogen complexes coupled to a plastic strain localization which is large enough to lead to hydrogen-enhanced vacancy clustering during the plastic deformation appears to be the likely factor that triggers the hydrogen embrittlement of bcc(alpha-) and fcc(gamma)-iron.

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《ISIJ International》 |2022年第5期|832-839|共8页
作者
Chiari Luca; Fujinami Masanori;
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作者单位

Chiba Univ;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类黑色金属材料;
关键词
hydrogen embrittlement; iron; austenitic stainless steel; vacancy; positron annihilation lifetime spectroscopy; AUSTENITIC STAINLESS-STEELS; ENHANCED LOCALIZED PLASTICITY; PRESSURE GASEOUS-HYDROGEN; ENVIRONMENT EMBRITTLEMENT; MECHANICAL-PROPERTIES; DISLOCATION INTERACTIONS; NUMERICAL SIMULATIONS; MICROSTRUCTURE; DEFORMATION; STRENGTH;

Recent Studies of Hydrogen-related Defects in Iron-based Materials

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