Investigation of Hydrogen Embrittlement in Various Silicon Steels

IF 1.3 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Steel Structures Pub Date : 2025-11-23 DOI:10.1007/s13296-025-01007-w

Tomoya Ueki, Mitsuhiro Okayasu

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Abstract

This study examines the hydrogen embrittlement (HE) behavior of silicon steels with different microstructures and internal strains, processed through various heating treatments. Cold-rolled (CR) and annealed (AN) samples exhibited a ferritic phase, while water-quenched (WQ) and bake-hardened (BH) samples displayed a martensitic structure. CR samples had high strain from plastic deformation, whereas WQ and BH showed moderate strain from martensitic transformation. Hardness and ultimate tensile strength (UTS) increased with silicon content, with WQ and BH exhibiting the highest values and AN showing the lowest UTS but highest ductility. Hydrogen charging reduced UTS and significantly decreased fracture strain in CR, while WQ and BH experienced moderate reductions. AN samples remained unaffected. HE susceptibility correlated with diffusible hydrogen content, which was highest in CR and lowest in AN. After hydrogen charging, CR samples exhibited brittle fracture, WQ and BH showed mixed failure modes, and AN retained ductile failure. High silicon content effectively reduced HE, emphasizing its importance in developing HE-resistant silicon steels.

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各种硅钢氢脆的研究

本研究考察了不同热处理方式下具有不同组织和内部应变的硅钢的氢脆（HE）行为。冷轧（CR）和退火（AN）样品表现为铁素体相，而水淬（WQ）和烘烤硬化（BH）样品表现为马氏体组织。CR试样具有较高的塑性变形应变，而WQ和BH试样具有中等的马氏体变形应变。硬度和极限拉伸强度（UTS）随硅含量的增加而增加，其中WQ和BH值最高，AN值最低，但延展性最高。充氢降低了CR的UTS，显著降低了断裂应变，而WQ和BH则有适度的降低。AN样品未受影响。HE敏感性与扩散氢含量相关，CR最高，AN最低。充氢后，CR试样呈现脆性断裂，WQ和BH呈现混合破坏模式，AN试样保留延性破坏。高硅含量有效地降低了HE，强调了其在开发抗HE硅钢中的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Steel Structures 工程技术-工程：土木

CiteScore

2.70

自引率

13.30%

发文量

122

审稿时长

12 months

期刊介绍： The International Journal of Steel Structures provides an international forum for a broad classification of technical papers in steel structural research and its applications. The journal aims to reach not only researchers, but also practicing engineers. Coverage encompasses such topics as stability, fatigue, non-linear behavior, dynamics, reliability, fire, design codes, computer-aided analysis and design, optimization, expert systems, connections, fabrications, maintenance, bridges, off-shore structures, jetties, stadiums, transmission towers, marine vessels, storage tanks, pressure vessels, aerospace, and pipelines and more.