|
|
|
| Microstructure Evolution and Microhardness of Ultrafine-grained High Carbon Steel during Multiple Laser Shock Processing |
| Yi XIONG1,2,Tian-tian HE3,Feng-zhang REN1,2,Peng-yan LI1,Lu-fei CHEN1,Alex A. VOLINSKY4 |
1. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003,Henan, China
2. Henan Collaborative Innovation Center of Non-ferrous Metal Generic Technology, Luoyang 471003, Henan, China
3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning,China
4. Department of Mechanical Engineering, University of South Florida, Tampa FL 33620, USA |
|
|
|
|
Abstract Surface microstructure and microhardness of (ferrite+cementite) microduplex structure of the ultrafine-grained high carbon steel after laser shock processing (LSP) with different impact times were investigated by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and microhardness measurements. Equiaxed ferrite grains were refined from 400 to 150 nm, and the cementite lamellae were fully spheroidized, with a decrease of the particle diameter from 150 to 100 nm as the impact times increased. The cementite dissolution was enhanced significantly. Correspondingly, the lattice parameter of ��-Fe and microhardness increased with the impact times.
|
|
Received: 10 March 2014
Published: 05 January 2015
|
|
Corresponding Authors:
Xiong yi
E-mail: 7246187@qq.com
|
|
|
|
| [1] |
Ying Ci,*,Zhan-zhan Zhang. Simulation study on heat-affected zone of high-strain X80 pipeline steel[J]. Chinese Journal of Iron and Steel, 2017, 24(9): 966-973. |
| [2] |
Xiao-li Zhao,,Yong-jian Zhang,Cheng-wei Shao,Wei-jun Hui,Han Dong. Thermal stability of retained austenite and mechanical properties of medium-Mn steel during tempering treatment[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 830-837. |
| [3] |
Hang-wei Zhou,,Hui-qun Liu,,Dan-qing Yi,,Yu Xiao,,Xiao-long Zhao,Jian Wang,Qi Gao. Effect of �� phase on fatigue crack growth of Ti-6242 alloy[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 811-822. |
| [4] |
Reng-chong Xu,,Yan-lin He,,Hu Jiang,,Hua Wang,,Na-qiong Zhu,,Xiao-gang Lu,, Lin Li,. Microstructures and mechanical properties of ferrite-based lightweight steel with different compositions[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 737-742. |
| [5] |
Wei-jun Hui,*,Na Xiao,Xiao-li Zhao,Yong-jian Zhang,Yu-feng Wu. Effect of vanadium on dynamic continuous cooling transformation behavior of medium-carbon forging steels[J]. Chinese Journal of Iron and Steel, 2017, 24(6): 641-648. |
| [6] |
Yong-xing Jiao,Jian-sheng Liu*,Xing-wang Duan,Xiao-hua Zheng,Wen-wu He. Prediction of critical forging penetration efficiency for 06Cr19Ni9NbN steel by dynamic recrystallization[J]. Chinese Journal of Iron and Steel, 2017, 24(6): 649-653. |
|
|
|
|
2015, Vol. 22 
