Effect of microstructure on hydrogen embrittlement susceptibility in quenching-partitioning-tempering steel

Xu, Pingda; Li, Chongyang; Li, Wei; Zhu, Maoyuan; Li, Wei; Zhang, Ke

doi:10.1016/j.msea.2021.142046

Cited by 15 publications

(2 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Usually, microdefects and microstructural optimization are used to improve hydrogen traps to suppress HIDF, such as dislocations, carbides, retained austenite, and chemical heterogeneity [8][9][10][11][12]. Xu et al found that NbC can become an effective hydrogen trap, significantly improving the hydrogen embrittlement resistance of AHSS treated by the Q&P process [13]. When the atomic concentration of carbides is the same, the hydrogen capture ability of carbides decreases in the order of NbC > TiC > VC [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of hydrogen charging intensities and times on hydrogen embrittlement of Q&P980 steel

Zhao,

Chen,

Zhang

et al. 2024

Mater. Res. Express

View full text Add to dashboard Cite

Q&P steel has good development prospects because of its excellent mechanical properties, but with the improvement in strength grade, hydrogen-induced delayed fracture (HIDF) is almost inevitable. In this paper, slow strain rate tensile tests and deep-drawn cup tests of Q&P980 steel under different hydrogen charging strengths and times were carried out, and the microstructure and fracture morphology were analysed by SEM. The results show that the plastic loss of Q&P980 steel was more obvious with increasing hydrogen charging intensity and hydrogen charging time, and a good elongation of 6.63% is still retained under the hydrogen content of 2.134 ppm. The deep-drawn cup samples were placed in acidic distilled water and alkaline and acidic solutions, and only a deep-drawn ratio of 1.9 showed HIDF in the three solutions. Specifically, 12 cracks were observed after soaking in HCl solution for two days. The main reason is that the martensite, austenite island and ferrite phase interface of Q&P980 steel increase stress during deformation and with the transformation-induced plasticity (TRIP) effect, resulting in hydrogen segregation at the phase interface and crack initiation leading to HIDF.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of hydrogen charging intensities and times on hydrogen embrittlement of Q&P980 steel

Zhao,

Chen,

Zhang

et al. 2024

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…Because there are no carbide-forming elements in Q&P steels (such as Nb, V, Ti, Mo, B, etc. ), the advantage of precipitation strengthening and fine-grain strengthening is excluded [ 36 ]. However, a new type of composition, containing micro-alloying elements (such as Nb, V, Ti, Mo, B, etc.…”

Section: Introductionmentioning

confidence: 99%

The Fabrication of Ultrahigh-Strength Steel with a Nanolath Structure via Quenching–Partitioning–Tempering

Xu,

Xie,

Liu

et al. 2024

Materials

View full text Add to dashboard Cite

A novel low-alloy ultrahigh-strength steel featuring excellent mechanical properties and comprising a nanolath structure was fabricated in this work using a quenching–partitioning–tempering (Q-P-T) process. The Q-P-T process comprised direct quenching and an isothermal bainitic transformation for partitioning after thermo-mechanical control processing (online Q&P) and offline tempering (reheating and tempering). The ultrafine nanolath martensite/bainite mixed structure, combined with residual austenite in the form of a thin film between the nanolaths, was formed, thereby conferring excellent mechanical properties to the steel structures. After the Q-P-T process, the yield and tensile strengths of the steels reached 1450 MPa and 1726 MPa, respectively. Furthermore, the Brinell hardness and elongation rate were 543 HB and 11.5%, respectively, with an average impact energy of 20 J at room temperature.

show abstract

Mechanism of the Interaction Between Hydrogen, Microstructure, and Mechanical Properties in Low-Alloy High-Strength Marine Steel

Zhang,

Li,

et al. 2023

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Effect of microstructure on hydrogen embrittlement susceptibility in quenching-partitioning-tempering steel

Cited by 15 publications

References 31 publications

Effect of hydrogen charging intensities and times on hydrogen embrittlement of Q&P980 steel

Effect of hydrogen charging intensities and times on hydrogen embrittlement of Q&P980 steel

The Fabrication of Ultrahigh-Strength Steel with a Nanolath Structure via Quenching–Partitioning–Tempering

Mechanism of the Interaction Between Hydrogen, Microstructure, and Mechanical Properties in Low-Alloy High-Strength Marine Steel

Contact Info

Product

Resources

About