What is it about?
The low cycle fatigue (LCF), high cycle fatigue (HCF), microstructure and tensile properties of a low pressure cast A356 aluminium alloy wheel were investigated with T6 heat treatment. The effect of cast microstructure on the fatigue behaviour in A356 aluminum alloy for automotive wheel
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Why is it important?
The cast microstructure of the alloy significantly influenced the low and high cycle fatigue behaviours. The rim region of the cast aluminium alloy wheel showed higher low and high cycle fatigue strength compared with the spoke region; this difference is thought to be caused by the higher cooling rate of the rim region during casting. The microstructure of the spoke region of the alloy wheel consisted of a dendrite structure with primary α-phase and frequently dispersed large eutectic phases, which led to partial brittle fracture and lower fatigue life with less fatigue plastic strain
Perspectives
I think this article let us know why the two region of rim and spoke in automotive wheel show different fatigue behaviour.
Professor Yong Sik Ahn
Pukyong National University
Read the Original
This page is a summary of: Fatigue behaviour of A356 aluminium alloy for automotive wheels, International Journal of Cast Metals Research, January 2012, Maney Publishing,
DOI: 10.1179/1743133611y.0000000009.
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