Structure and Performance of 35 Steel after Strengthened Shot Peening Surface Nanocrystallization and Gas Tufftriding Process
35 steel was processed in order to investigate its structure and performance after strengthened shot peening and gas tufftriding process. The composition,structure and phase of the samples were analyzed by means of scanning electron micrograph(SEM),metallographic microscope and X-ray diffraction(XRD)respectively. The results show that the hardness of samples after strengthened shot peening increases by about 100 HV0.025,and the friction coefficient and corrosion rate decrease.However,the samples treated with gas tufftriding after strengthened shot peening exhibit the performance of approximate 3 times hardness of the original samples, lower friction coefficient,more excellent tribological characteristics,stronger corrosion-resistance with a stable and broad passivation region.
Zhengyi Jiang, Jingtao Han and Xianghua Liu
L. Chen et al., "Structure and Performance of 35 Steel after Strengthened Shot Peening Surface Nanocrystallization and Gas Tufftriding Process", Advanced Materials Research, Vols. 152-153, pp. 125-130, 2011