Role of Cu on hydrogen embrittlement behavior in Fe–Mn–C–Cu TWIP steel

Kwon, Young Jin; Lee, Taekyung; Lee, Junmo; Chun, Young Soo; Lee, Chong Soo

doi:10.1016/j.ijhydene.2015.04.022

Cited by 49 publications

(12 citation statements)

References 48 publications

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“…It should be pointed out that the alloy investigated in the study by Yoo et al [58] was relatively highly alloyed, which resulted in a high SFE of the austenite that limited αʹ-or ε-martensitic transformation, in the steel microstructure designed to have a mixture of ferrite and austenite. Finally, Cu additions (1-2 wt pct) have been reported to enhance the HE resistance of a fully austenitic, high Mn TWIP steel (Fe-17Mn-0.8C, in wt pct) [60]. In this case, where Cu is not likely precipitated, it is more likely that the improvement in the H-resistance was associated with the increased SFE.…”

Section: Other Alloying Elements and Precipitatesmentioning

confidence: 97%

Hydrogen Embrittlement of Medium Mn Steels

Cho

Kong

Speer

et al. 2021

Metals

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Recent research efforts to develop advanced–/ultrahigh–strength medium-Mn steels have led to the development of a variety of alloying concepts, thermo-mechanical processing routes, and microstructural variants for these steel grades. However, certain grades of advanced–/ultrahigh–strength steels (A/UHSS) are known to be highly susceptible to hydrogen embrittlement, due to their high strength levels. Hydrogen embrittlement characteristics of medium–Mn steels are less understood compared to other classes of A/UHSS, such as high Mn twinning–induced plasticity steel, because of the relatively short history of the development of this steel class and the complex nature of multiphase, fine-grained microstructures that are present in medium–Mn steels. The motivation of this paper is to review the current understanding of the hydrogen embrittlement characteristics of medium or intermediate Mn (4 to 15 wt pct) multiphase steels and to address various alloying and processing strategies that are available to enhance the hydrogen-resistance of these steel grades.

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Section: Other Alloying Elements and Precipitatesmentioning

confidence: 97%

Hydrogen Embrittlement of Medium Mn Steels

Cho

Kong

Speer

et al. 2021

Metals

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“…The hydrogen embrittlement of high manganese steels for both crack initiation and propagation could be inhibited by adding copper in steels. However, this only affected the hydrogen embrittlement rate rather than the mechanism of hydrogen embrittlement [19]. A stress-induced martensitic transformation was found in high manganese steels without aluminum, while there was no martensite and deformation twins formed in high manganese steels containing aluminum.…”

Section: Introductionmentioning

confidence: 95%

Effect of temperature, strain rate and chromium content on the flow behavior of high-manganese steels

Xia

Yan

Zhang

et al. 2022

Mater. Res. Express

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Compression tests and metallographic observation were conducted to investigate the effect of temperature (400-1100 ℃), strain rate (0.001-10 s-1) and chromium content (0.21-5.44 wt.%) on the flow behavior of high manganese steels for cryogenic application. The results showed that the flow stress reduced with increased temperature and decreased strain rate. The effect of chromium content on the flow stress of steels was not linear. The lowest flow stress was got when the content of chromium was 1.53 wt.%. The influence of strain rate and temperature was obvious while that of chromium content was minor. The maximum flow stress decreased 538 MPa-571 MPa when the temperature rised from 400 ℃ to 1100 ℃ at the strain rate 10 s-1. It ascended 146 MPa-149 MPa when the strain rate increased from 0.001 s-1 to 10 s-1 at 400 ℃. However, the effect of chromium content on the maximum flow stress of steels did not exceed 50 MPa at tested temperatures and strain rates. Dynamic recrystallization (DRX) was observed for all tested steels at 1100 ℃. Higher temperatures and lower strain rates seemed to promote DRX. The true strain required for DRX was the largest when the chromium content in steels was 1.53 wt.%. It delayed the occurrence of DRX.

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“…10) It has been reported that the addition of Cu is beneficial for improving several properties of ferrous alloys. [11][12][13][14][15][16] Peng et al 17) investigated the effect of Cu on the tensile deformation behavior of high-carbon twinning-induced plasticity steels. The Cu addition could increase the total elongation without slight loss of tensile strength.…”

Section: Effect Of Cu Alloying On Strain Capacity Of Cu-bearing Pipelmentioning

confidence: 99%