Hydrogen embrittlement induced by atomic hydrogen and hydrogen-induced martensites in type 304L stainless steel

Pan, Chuan Zeng; Wuyang, Chu; Li, Z.B; Liang, D.T.; Su, Yanjing; Gao, Kewei; Li, Qiao

doi:10.1016/s0921-5093(02)00856-0

Cited by 40 publications

(15 citation statements)

References 18 publications

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“…Hydrogen charging did not change the microstructure. The average amount of hydrogen immediately after H-charging was 51˘5 ppm, which was smaller than the 80-110 ppm reported under similar charging conditions [22,23]. This was due to the finer mean grain size, i.e., hydrogen discharging out of the surface increased with the increasing density of the grain boundaries [24].…”

Section: Determination Of the Amount Of Strain-induced Martensite (Simentioning

confidence: 65%

Effect of Hydrogen and Strain-Induced Martensite on Mechanical Properties of AISI 304 Stainless Steel

Bak

Abro

Lee

2016

Metals

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Plastic deformation and strain-induced martensite (SIM, α 1 ) transformation in metastable austenitic AISI 304 stainless steel were investigated through room temperature tensile tests at strain rates ranging from 2ˆ10´6 to 2ˆ10´2/s. The amount of SIM was measured on the fractured tensile specimens using a feritscope and magnetic force microscope. Elongation to fracture, tensile strength, hardness, and the amount of SIM increased with decreasing the strain rate. The strain-rate dependence of RT tensile properties was observed to be related to the amount of SIM. Specifically, SIM formed during tensile tests was beneficial in increasing the elongation to fracture, hardness, and tensile strength. Hydrogen suppressed the SIM formation, leading to hydrogen softening and localized brittle fracture.

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Section: Determination Of the Amount Of Strain-induced Martensite (Simentioning

confidence: 65%

Effect of Hydrogen and Strain-Induced Martensite on Mechanical Properties of AISI 304 Stainless Steel

Bak

Abro

Lee

2016

Metals

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“…17 It has been found that hydrogen could diffuse and enrich in the crack tips during the rupture of the surface film. 33,37,[39][40] It is suggested that hydrogen can assist the crack propagation during SCC by either the anodic dissolution at the crack tip sustained by the cathodic reduction of hydrogen ions, [41][42] or the martensite phase transformation in unstable austenitic steels resulting from hydrogen absorption. [43][44] The EPR test results of ODS 304 and AISI 304 steels are presented in Figure 5.…”

Section: Resultsmentioning

confidence: 99%

Chloride-Induced Stress Corrosion Cracking of Oxide-Dispersion-Strengthened Austenitic Steels

et al. 2017

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The stress corrosion cracking (SCC) behavior of oxidedispersion-strengthened (ODS) 304 austenitic steels has been investigated in a chloride-rich aqueous environment at 143°C. ODS 304 alloys are found to be more resistant to SCC than the commercial AISI 304 steels. Under a constant tensile load of 177 MPa, the crack growth rate in ODS 304 steels is about one fourth of AISI 304 steels, and the time-to-failure of ODS 304 steels is 7.5 times of AISI 304 steels. Intergranular SCC dominates the fracture surface of AISI 304 steel, while in ODS 304 steel both intergranular and transgranular SCC occur. Electrochemical reactivity tests show ODS 304 steel is less sensitized than AISI 304, likely a result of a low carbon concentration and small grain size.

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“…Diffusion of hydrogen is influenced both by temperature and chemical potential gradients [19]. In this case, the chemical potential gradient refers to the force imposed on the atoms due to a concentration gradient [20].…”

Section: Hydrogen Enhanced Decohesion (Hed)mentioning

confidence: 99%

Emphasis of Embrittlement Characteristics in 304L and 316L Austenitic Stainless Steel

Saluja¹,

Moeed²

2014

IOSRJMCE

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Hydrogen embrittlement induced by atomic hydrogen and hydrogen-induced martensites in type 304L stainless steel

Cited by 40 publications

References 18 publications

Effect of Hydrogen and Strain-Induced Martensite on Mechanical Properties of AISI 304 Stainless Steel

Effect of Hydrogen and Strain-Induced Martensite on Mechanical Properties of AISI 304 Stainless Steel

Chloride-Induced Stress Corrosion Cracking of Oxide-Dispersion-Strengthened Austenitic Steels

Emphasis of Embrittlement Characteristics in 304L and 316L Austenitic Stainless Steel

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