ICSID 2018

Dubrovnik, Croatia, October 2 – 5, 2018

Effect of inclusion orientation on rolling contact fatigue processes observed by laminography using ultra-bright synchrotron radiation

Yoshikazu Nakai, Kobe University

The flaking failure in rolling contact fatigue (RCF) results from crack initiation and propagation has been believed to originate from non-metallic inclusions located beneath the surface. With conventional microscopies, however, damage process in the internal region of materials could not be observed, then RCF crack initiation and propagation behaviours were observed by using synchrotron radiation computed laminography (SRCL) in the brightest synchrotron facility in Japan, and the effect of the inclusion orientation on the RCF property was examined.