Acta Metallurgica Sinica (English Letters) ›› 2023, Vol. 36 ›› Issue (7): 1144-1158.DOI: 10.1007/s40195-022-01517-0

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Hydrogen Embrittlement of Advanced High-Strength Steel for Automobile Application: A Review

Ming-Tu Ma1,2, Ke-Jian Li1,3(), Yu Si3, Peng-Jun Cao3, Hong-Zhou Lu4, Ai-Min Guo4, Guo-Dong Wang5   

  1. 1State Key Laboratory of Vehicle NVH and Safety Technology, Chongqing 401122, China
    2China Automotive Engineering Research Institute Co., Ltd.,Chongqing 401122, China
    3School of Metallurgy and Materials Engineering, Chongqing University of Science & Technology, Chongqing 401331,China
    4CITIC Metal Co. Ltd, Beijing 100004, China
    5RAL of Dongbei University, Shenyang 110819, China
  • Received:2022-09-07 Revised:2022-11-02 Accepted:2022-11-07 Online:2023-07-10 Published:2023-07-04
  • Contact: Ke-Jian Li

Abstract:

The hydrogen embrittlement (HE) fracture of advanced high-strength steels used in lightweight automobiles has received increasing public attention. The source, transmission, and movement of hydrogen, characterization parameters, and test methods of HE, as well as the characteristics and path of HE fractures, are introduced. The mechanisms and modes of crack propagation of HE and hydrogen-induced delayed fracture are reviewed. The recent progress surrounding micro and macro typical fracture characteristics and the influencing factors of HE are discussed. Finally, methods for improving HE resistance can be summarized as follows: (1) reducing crystalline grain and inclusion sizes (oxides, sulfides, and titanium nitride), (2) controlling nano-precipitates (niobium carbide, titanium carbide, and composite precipitation), and (3) increasing residual austenite content under the reasonable tension strength of steel.

Key words: Hydrogen embrittlement, High-strength steel, Hydrogen-induced delayed cracking, Hydrogen trapping, Residual austenite