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Rizwanulhaque Syed,Wei Jiang,Cunshan Wang,M. Iqbal Sabir 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.1
Stainless steel is among the most widely used industrial materials. In particular, stainless steel 304 (304SS) is the most used materialgrade. To increase the utilization of any industrial material, its fatigue life should be optimized. In this work, the fatigue life of 304SS wasenhanced by the addition of multi-walled carbon nanotubes (MWCNTs). Moreover, the incorporation of a small amount of MWCNTsincreased the fatigue life of 304SS. Scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction (XRD)results showed that the suppression of fatigue crack growth rate was caused by CNT deposition at the crack tip. CNTs were entangledwith each other, thereby resulting in finer grain size. The XRD diffractograms of the 304SS treated area peak showed that the microstructureconsisted of austenite and carbon.