Ultrasonic fatigue tests (testing frequency around 20kHz) have been conducted on A356 aluminum alloys with different copper contents and AS7GU aluminum alloy. Tests were performed in dry air and submerged in water conditions. The effect of copper content was investigated and it was concluded that copper content plays an important role influencing the humidity effect on A356 aluminum alloy ultrasonic fatigue lives. Also, for the same copper content, copper in solute solution or in precipitate have different humidity sensitivities.
Copper Effect on the Ultrasonic Fatigue Life of A356 Aluminum Alloy Under Variable Humidity Levels
Sae Technical Papers
WCX World Congress Experience ; 2018
2018-04-03
Aufsatz (Konferenz)
Englisch
Aluminum alloys , Copper , Fatigue , Humidity , Water , Copper alloys
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