Microstructures and Microhardness of SNCed Medium Carbon Low Alloy Steels |
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| Journal | Materials Science Forum (Volumes 475 - 479) |
|---|---|
| Volume | PRICM-5 |
| Edited by | Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie |
| Pages | 137-140 |
| DOI | 10.4028/www.scientific.net/MSF.475-479.137 |
| Citation | Jun Bao Zhang et al., 2005, Materials Science Forum, 475-479, 137 |
| Online since | January, 2005 |
| Authors | Jun Bao Zhang, Yue Lian Liu, Xin Qing Zhao, J. Wu, Hong Wei Song, Tian Ying Xiong |
| Keywords | 0.4C-1.0Cr Low Alloy Steel, 1.0C-1.5Cr Low Alloy Steel, Mechanical Properties, Microstructure, Surface Nanocrystallization (SNC) |
| Abstract | Nanostructured layers were fabricated on the surface of 0.4C-1.0Cr and 1.0C-1.5Cr low alloy steels by using an ultrasonic particulate peening (USPP) technique. The microstructures and mechanical properties of the nanocrystallized layers were characterized by means of transmission electron microscopy, and nano-indentation test. Results showed that the average grain size in the surface nanocrystallized layer of 0.4C-1.0Cr and 1.0C-1.5Cr low alloy steel was about 5nm and 10nm, respectively. The nano-indentation hardnesses of the surface nanocrystallized layer were enhanced significantly and reach upwards of 8.0 GPa and 12.5 GPa, respectively. |
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