Effect of niobium precipitation behavior on microstructure and hydrogen induced cracking of press hardening steel 22MnB5

Li, Baoshun; Zhu, Guangcan; Kang, Yonglin; Liu, Rendong

doi:10.1016/j.msea.2018.02.021

Cited by 53 publications

(26 citation statements)

References 19 publications

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“…Cold cracking occurs in HSLA steels because of the presence of three factors such as susceptible microstructures, tensile residual stresses, and diffusible hydrogen content. The main parameters that affect the cold cracking resistance of the HSLA steel are taken from the literature [1–4]. The parameters considered in this research paper are preheating temperature, oxide particles content in the weld metal and heat input.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of oxide particles will promote acicular ferrite as well as nucleation sites for cold cracks [3]. Due to high angle grain boundaries, acicular ferrite is the desired microstructure for high impact strength [4]. The addition of niobium to steel enhances the hydrogen embrittlement resistance of the steel.…”

Section: Introductionmentioning

confidence: 99%

“…The addition of niobium to steel enhances the hydrogen embrittlement resistance of the steel. It is achieved through hydrogen trapping, which will enhance the resistance of the steel to hydrogen embrittlement [4]. While adding manganese into the weld metal, the larger diameter oxide (2–3 µm in diameter) particles attract more hydrogen than fine carbonitride and can play a dominant role in cold crack susceptibility.…”

Section: Introductionmentioning

confidence: 99%

“…It is also found from the literature that preheating temperature, heat input, and oxide particles content affect the cold crack susceptibility of the HSLA steels [3–8]. Hence in this work, these parameters are taken at three levels.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Artificial neural network modelling of cold‐crack resistance of high strength low alloy steel 950A

Muralidaran¹,

Krishnasamy²

2019

J. eng.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Artificial neural network modelling of cold‐crack resistance of high strength low alloy steel 950A

Muralidaran¹,

Krishnasamy²

2019

J. eng.

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“…However, there are only a few published data available concerning the HE susceptibility of hot stamped steels [14,20,21,22,23,24]. This research was focused on the effect of microalloying elements Nb [20,21] and Ti [22] on the HE susceptibility of HS boron-alloyed steels, the absorption and desorption of diffusible hydrogen in Al-Si coated boron-alloyed steel [23] and the effect of tempering on the HE of 22MnB5 steel [24]. Unfortunately, few studies were paid to the HE behavior of boron-alloyed steels after HS [14], especially to the combined effect of HS and tempering.…”

Section: Introductionmentioning

confidence: 99%

Effects of Hot Stamping and Tempering on Hydrogen Embrittlement of a Low-Carbon Boron-Alloyed Steel

et al. 2018

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The effects of hot stamping (HS) and tempering on the hydrogen embrittlement (HE) behavior of a low-carbon boron-alloyed steel were studied by using slow strain rate tensile (SSRT) tests on notched sheet specimens. It was found that an additional significant hydrogen desorption peak at round 65–80 °C appeared after hydrogen-charging, the corresponding hydrogen concentration (CHr) of the HS specimen was higher than that of the directed quenched (DQ) specimen, and subsequent low-temperature tempering gave rise to a decrease of CHr. The DQ specimen exhibited a comparatively high HE susceptibility, while tempering treatment at 100 °C could notably alleviate it by a relative decrease of ~24% at no expanse of strength and ductility. The HS specimen demonstrated much lower HE susceptibility compared with the DQ specimen, and tempering at 200 °C could further alleviate its HE susceptibility. SEM analysis of fractured SSRT surfaces revealed that the DQ specimen showed a mixed transgranular-intergranular fracture, while the HS and low-temperature tempered specimens exhibited a predominant quasi-cleavage transgranular fracture. Based on the obtained results, we propose that a modified HS process coupled with low-temperature tempering treatment is a promising and feasible approach to ensure a low HE susceptibility for high-strength automobile parts made of this type of steel.

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Hydrogen Embrittlement Evaluation and Prediction in Press‐Hardened Steels

Cao

Wang

Ngiam

et al. 2023

steel research int.

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The application of press-hardened steels (PHSs) in automotive body-in-white components using the hot-stamping technique is growing thanks to its impressive strength and formability. Unfortunately, hydrogen embrittlement (HE), an issue that generally exists in high-strength steels, impedes the PHSs rising application trend by causing catastrophic mechanical property degradation. Thus, detailed evaluation and prediction of HE risk throughout PHSs manufacture and service condition are necessary. This study highlights techniques to characterize the hydrogen content and distribution, techniques to evaluate HE susceptibility, and potential models to simulate the in-service performance of PHS. The survey of existing studies has revealed the gaps between laboratory measurement and industry application, including but not limited to 1) the accelerated experiment-induced discrepancies against real-life applications, 2) a selection of the appropriate HE indicators, 3) an accurate risk prediction model, and 4) efficient feedback to the industry based on both experimental and simulated results. Based on the review, future studies are expected to establish a conclusive HE evaluation standard for PHS.

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Effect of niobium precipitation behavior on microstructure and hydrogen induced cracking of press hardening steel 22MnB5

Cited by 53 publications

References 19 publications

Artificial neural network modelling of cold‐crack resistance of high strength low alloy steel 950A

Artificial neural network modelling of cold‐crack resistance of high strength low alloy steel 950A

Effects of Hot Stamping and Tempering on Hydrogen Embrittlement of a Low-Carbon Boron-Alloyed Steel

Hydrogen Embrittlement Evaluation and Prediction in Press‐Hardened Steels

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