Fatigue life of stainless steel 304 enhancement by addition of multi-walled carbon nanotubes (MWCNTs)

被引：0
|
作者：
Rizwanulhaque Syed
Wei Jiang
Cunshan Wang
M. Iqbal Sabir
机构：
[1] Dalian University of Technology,School of Mechanical Engineering
[2] Dalian University of Technology,Key Laboratory of Materials Modification by Laser, Ion and Electron Beams
[3] Xiao Zhang County,888Huangtai Industrial State
来源：
Journal of Mechanical Science and Technology | 2015年 / 29卷
关键词：
CO; laser; Fatigue life; Fatigue crack growth; Multi-walled carbon nanotubes; Stainless steel;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Stainless steel is among the most widely used industrial materials. In particular, stainless steel 304 (304SS) is the most used material grade. To increase the utilization of any industrial material, its fatigue life should be optimized. In this work, the fatigue life of 304SS was enhanced by the addition of multi-walled carbon nanotubes (MWCNTs). Moreover, the incorporation of a small amount of MWCNTs increased 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 entangled with each other, thereby resulting in finer grain size. The XRD diffractograms of the 304SS treated area peak showed that the microstructure consisted of austenite and carbon.
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页码：291 / 296
页数：5
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