Ma, Y., Xiong, Y., Chen, Z., Zha, X., He, T., Li, Y., Singh, H., Kömi, J., Huttula, M. and Cao, W. (2022), Microstructure Evolution and Properties of Gradient Nanostructures Subjected to Laser Shock Processing in 300M Ultrahigh-Strength Steel. steel research int., 93: 2100434. https://doi.org/10.1002/srin.202100434
Microstructure evolution and properties of gradient nanostructures subjected to laser shock processing in 300M ultrahigh-strength steel
|Author:||Ma, Yun-fei1; Xiong, Yi1,2; Chen, Zheng-ge3;|
1School of Materials Science and Engineering Henan University of Science and Technology Luoyang 471023, China
2International Joint Research Laboratory Collaborative Innovation Center of Nonferrous Metals Luoyang 471023, China
3State Key Laboratory of Laser Interaction with Matter Northwest Institute of Nuclear Technology Xi’an 710024, China
4Research Center for Experimental Testing and Metrology Technology Luoyang Ship Material Research Institute Luoyang 471000, China
5Institute for Special Steels Central Iron and Steel Research Institute Beijing 100081, China
6Nano and Molecular Systems Research Unit University of Oulu Oulu FIN-90014, Finland
7Materials and Mechanical Engineering, Center for Advanced Steels Research University of Oulu Oulu FIN-90014, Finland
|Online Access:||PDF Full Text (PDF, 1.4 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe202301051632
John Wiley & Sons,
|Publish Date:|| 2023-01-05
Herein, gradient nanostructures (GNs) are created in 300M ultrahigh-strength (UHS) steel by laser shock processing (LSP). Microstructure evolution and properties of GNs subjected to LSP with different pulse energies are thoroughly characterized on 3D profiler, scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffractometer (XRD), X-ray stress analyzer, nanoindenter, and tensile tester. Results show successful creations of GNs in 300M steel after LSP treatments. With the increase in pulse energy, the size of the surface layer is refined from 15 nm (3 J) to 10 nm (7 J), and the corresponding grains are amorphized to some extent. Meanwhile, many substructure defects such as dislocation tangles and deformation twins (DTs) are noted in the subsurface. The dislocation density and the number of DTs increase with the pulse energy. Further, the high compressive residual stress is introduced to the 300M steel surface after LSP, and the corresponding hardness is improved substantially. The compressive residual stress, depth of the affected layer, and the hardness rise significantly with the pulse energy. Apart from improvements in strength and plasticity, the fracture morphology is changed from a typical ductile fracture to quasicleavage and ductile mixed fracture.
Steel research international
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
114 Physical sciences
216 Materials engineering
This work was supported by the National Natural Science Foundation of China [Grant numbers U1804146, 52111530068, and 51905153], 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].
© 2021 Wiley-VCH GmbH. This is the peer reviewed version of the following article: Ma, Y., Xiong, Y., Chen, Z., Zha, X., He, T., Li, Y., Singh, H., Kömi, J., Huttula, M. and Cao, W. (2022), Microstructure Evolution and Properties of Gradient Nanostructures Subjected to Laser Shock Processing in 300M Ultrahigh-Strength Steel. steel research int., 93: 2100434, which has been published in final form at https://doi.org/10.1002/srin.202100434. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.