Damage behavior of 2198-T8 Al-Li alloy with different corrosion fatigue modes
Source abstract
Abstract
Abstract A self-designed in-situ corrosion–fatigue test platform eligible for DIC technique is designed to evaluate the fatigue performance and failure mechanism of 2198-T8 Al-Li alloy under different conditions. The length and width of crack tip plastic zone decreases 77.7% and 47.1% respectively with the increase of concentration from 2.00-5.00wt.% under CF-I conditions. A competing mechanism of corrosion and fatigue under “in-situ corrosion fatigue” is proposed. In the salt concentration range of 2.00-3.50wt.%, corrosive products and NaCl crystals will cause the “crack closure effect” to delay the crack growth rate. In the range of 3.50-5.00wt.%, the hydrogen embrittlement accelerates the crack propagation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · High Temperature Alloys and Creep · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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