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Hydrogen Softening in the Thin Plate of Microcrystalline 316L Stainless Steel
- Source :
- steel research international. 84:812-817
- Publication Year :
- 2013
- Publisher :
- Wiley, 2013.
-
Abstract
- The thin-plate specimen of 316L austenite stainless steel was charged with hydrogen using a cathodic charging technique. Despite the short diffusion distance of hydrogen predicted by the diffusion-controlled model for a semi-infinite sheet, the Vickers hardness measurements revealed the full effect of hydrogen in the center of the cross-sections of thin-plate specimens as well as in the vicinity of the outer surfaces, which appears to be due to the short-circuit diffusion mechanism along the grain boundaries. The room-temperature tensile properties of both undeformed and deformed (20, 40%) samples were examined and compared. Hydrogen softening was apparent in both types of samples. For example, the 40% deformed sample showed an approximately 17 and 7% lower yield and tensile strength, respectively, after H charging at a strain rate of 2 × 10−4 s−1 with a concomitant decrease in ductility compared to that without H.
- Subjects :
- Austenite
Materials science
Hydrogen
Metallurgy
Metals and Alloys
chemistry.chemical_element
engineering.material
Condensed Matter Physics
chemistry
Ultimate tensile strength
Vickers hardness test
Materials Chemistry
engineering
Physical and Theoretical Chemistry
Austenitic stainless steel
Ductility
Softening
Hydrogen embrittlement
Subjects
Details
- ISSN :
- 16113683
- Volume :
- 84
- Database :
- OpenAIRE
- Journal :
- steel research international
- Accession number :
- edsair.doi...........4cd4b31d218801a1f3244ddf42773f7a