研究目的
Investigating the practical prospects and parameter optimization for using low-energy laser sources in laser shock peening technology.
研究成果
The research enables the selection of the optimal environments combination to achieve the most effective results in the process of laser shock peening. The optimal ablative coating for multi-pulse processing is a combination of aluminum foil – adhesive tape. This coating has a good absorption efficiency of laser emission, high adhesion to any surface, can be used for curved surfaces, the ability to withstand up to 4 repeated laser shots.
研究不足
The transition to small low-energy sources is associated with a number of issues such as the need for focusing requires processing with overlapping spots and the use of non-standard coatings.
1：Experimental Design and Method Selection:
Laser shock processing was carried out on polished samples of pure Nickel and aluminum alloy AlMg6 using a pulsed Nd:YAG laser. The influence of various absorbing and tamping coatings on the properties of the processed material was researched.
2：Sample Selection and Data Sources:
Polished samples of pure Nickel and aluminum alloy AlMg6 were used. The results were evaluated by the microhardness of the treated samples areas.
3：List of Experimental Equipment and Materials:
A pulsed Nd:YAG laser of the company 'Solar' with pulse energy of about 300 mJ, pulse duration 20 ns, operating in q-switching mode at a wavelength of 532 nm. An 'EmcoTest Durascan 20' hardness tester was used to measure hardness.
4：Experimental Procedures and Operational Workflow:
The samples were irradiated at different energy densities with the number of reirradiations from 1 to 5 times per point. The diameter of the spot in the experiments varied from 0.1 to 1.0 mm.
5：1 to 0 mm.
Data Analysis Methods:
5. Data Analysis Methods: The results were evaluated by the microhardness of the treated samples areas, assuming that the microhardness of the material is linearly related to the stresses in it.
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