The Effect of Porosity Size on the Fatigue Properties in a Cast 319 Aluminum Alloy 2001-01-0818
A study was conducted to determine how the fatigue life of a 319 aluminum alloy (W319) was affected by pore size. To perform this study, two sets of microstructurally similar castings with differing levels of microporosity were created. Following room temperature fatigue testing, the pores that initiated fatigue cracks were identified and quantified. The results indicate that doubling the average initiating pore diameter yielded an approximate 30% decrease in run-out stress in the W319-T7 aluminum alloy.
Ford Motor Company Scientific Research Laboratories
SAE 2001 World Congress
Developments in Lightweight Aluminum Alloys for Automotive Applications: 2001-2005-PT-130, Light Metal Applications for the Automotive Industry: Aluminum and Magnesium-SP-1622, SAE 2001 Transactions Journal of Materials & Manufacturing-V110-5