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The Mechanism of the High Resistance to Hydrogen-Induced Strength Loss in Ultra-High Strength High-Entropy Alloy.
- Source :
- Metals (2075-4701); Jun2022, Vol. 12 Issue 6, p971-N.PAG, 10p
- Publication Year :
- 2022
-
Abstract
- The resistance of the Al<subscript>0.5</subscript>Cr<subscript>0.9</subscript>FeNi<subscript>2.5</subscript>V<subscript>0.2</subscript> high-entropy alloy (HEA) to hydrogen embrittlement (HE) was investigated by a slow strain rate test (SSRT), and the fracture surface was examined through a scanning electron microscope. Compared with other high-strength steels, Al<subscript>0.5</subscript>Cr<subscript>0.9</subscript>FeNi<subscript>2.5</subscript>V<subscript>0.2</subscript> showed insignificant strength loss after hydrogen charging. The fracture surface of the hydrogen-charged specimens mainly consisted of dimples, and no intergranular morphology was observed. The coupling effect of the dispersed nano-structured precipitates and high-density dislocations in Al<subscript>0.5</subscript>Cr<subscript>0.9</subscript>FeNi<subscript>2.5</subscript>V<subscript>0.2</subscript> improves the resistance to hydrogen-induced strength loss. [ABSTRACT FROM AUTHOR]
- Subjects :
- SCANNING electron microscopes
HYDROGEN embrittlement of metals
STRAIN rate
ALLOYS
Subjects
Details
- Language :
- English
- ISSN :
- 20754701
- Volume :
- 12
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Metals (2075-4701)
- Publication Type :
- Academic Journal
- Accession number :
- 157795991
- Full Text :
- https://doi.org/10.3390/met12060971