In situ damage assessment in a cast magnesium alloy during very high cycle fatigue

In situ damage assessment in a cast magnesium alloy during very high cycle fatigue

Damage evolution during very high cycle fatigue (VHCF) in AXJ530 die-cast magnesium alloy was studied in situ using nonlinear ultrasonic measurements via analysis of the feedback signal of a closed-loop ultrasonic fatigue system. Variations in acoustic nonlinearity with fatigue cycles revealed cycli...

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Veröffentlicht in:Scripta materialia 2011, Vol.64 (1), p.65-68
Hauptverfasser: Kumar, Anish, Adharapurapu, Raghavendra R., Jones, J. Wayne, Pollock, Tresa M.
Format: Artikel
Sprache:eng
Schlagworte:
Acoustic fatigue
Cast Mg alloy
Crack initiation
Crack propagation
Evolution
Fatigue crack initiation
Fatigue damage
Fatigue failure
High cycle fatigue
Magnesium base alloys
Nonlinear ultrasonics
Nonlinearity
Very high cycle fatigue
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Zusammenfassung:Damage evolution during very high cycle fatigue (VHCF) in AXJ530 die-cast magnesium alloy was studied in situ using nonlinear ultrasonic measurements via analysis of the feedback signal of a closed-loop ultrasonic fatigue system. Variations in acoustic nonlinearity with fatigue cycles revealed cyclic hardening/softening during early fatigue life (
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2010.09.008