University of Oulu

Zhou, T., Xiong, Y., Chen, Z., Zha, X., Lu, Y., He, T., Ren, F., Singh, H., Kömi, J., Huttula, M., & Cao, W. (2021). Effect of surface nano-crystallization induced by supersonic fine particles bombarding on microstructure and mechanical properties of 300M steel. Surface and Coatings Technology, 421, 127381.

Effect of surface nano-crystallization induced by supersonic fine particles bombarding on microstructure and mechanical properties of 300M steel

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Author: Zhou, Tian1; Xiong, Yi1,2; Chen, Zheng-ge3;
Organizations: 1School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, Henan, China
2Collaborative Innovation Center of Nonferrous Metals, Luoyang 471023, Henan, China
3State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710024, China
4Luoyang Ship Material Research Institute, Luoyang 471000, Henan, China
5Nano and Molecular Systems Research Unit, University of Oulu, FIN-90014, Finland
6Materials and Mechanical Engineering, Center for Advanced Steels Research, University of Oulu, FIN-90014, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.7 MB)
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Language: English
Published: Elsevier, 2021
Publish Date: 2023-06-08


Supersonic fine particles bombarding (SFPB) technology opens a new territory for engineering materials towards improved performances. Owing to its merits and emerging applications, 300M steel (tensile strength ≥1800 MPa) was treated with SFPB to create surface gradient nanostructures. The time dependent SFPB process was implemented on various 300M steel surface to investigate the microstructural evolution and mechanical property. 300M steel surface grains were sufficiently refined down to nanometer scale under high energy SFPB. In the subsurface layer, acicular martensite was found to be bent and broken, resulting in the high-density dislocation. At the early stage of SFPB, the impact affected area of 300M steel surface was deepened with increasing SFPB time, and the grains were constantly refined, which further lead to higher strength and improved hardness. However, after longer treatments of more than 90 s, bombardment energy accumulated at 300M steel surface resulted in grain growths and deteriorations of hardness. In particular, the newly formed microcracks substantially reduced the tensile strength. After SFPB treatment, the dimple size of the 300M steel surface fracture decreased significantly, and a large area of cleavage plane appeared, showing typical characteristics of ductile-brittle mixed fracture.

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Series: Surface & coatings technology
ISSN: 0257-8972
ISSN-E: 1879-3347
ISSN-L: 0257-8972
Volume: 421
Article number: 127381
DOI: 10.1016/j.surfcoat.2021.127381
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Funding: This work was supported by the National Natural Science Foundation of China [grant numbers U1804146, 51905153 and 52111530068]; the Program for Science, Technology Innovation Talents in Universities of Henan Province [grant number 17HASTIT026]; the Education Department of Henan Province [grant number 16A430005]; the Science and Technology Innovation Team of Henan University of Science and Technology [grant number 2015XTD006]; the Foreign Experts Introduction Project of Henan Province [grant number HNGD2020009]; and the Academy of Finland [grant number 311934].
Copyright information: © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http:/