| タイトル | Laser shocking of 2024 and 7075 aluminum alloys |
| 本文（外部サイト） | http://hdl.handle.net/2060/19770010254 |
| 著者（英） | Clauer, A. H.; Fairand, B. P.; Slater, J. E. |
| 著者所属（英） | Battelle Columbus Labs. |
| 発行日 | 1977-02-11 |
| 言語 | eng |
| 内容記述 | The effect of laser generated stress waves on the microstructure, hardness, strength and stress corrosion resistance of 2024 and 7075 aluminum alloys was investigated. Pulsed CO2 and neodymium-glass lasers were used to determine the effect of wavelength and pulse duration on pressure generation and material property changes. No changes in material properties were observed with CO2 laser. The strength and hardness of 2024-T351 and the strength of 7075-T73 aluminum alloys were substantially improved by the stress wave environments generated with the neodymium-glass laser. The mechanical properties of 2024-T851 and 7075-T651 were unchanged by the laser treatment. The correlation of the laser shock data with published results of flyer plate experiments demonstrated that a threshold pressure needed to be exceeded before strengthening and hardening could occur. Peak pressures generated by the pulsed laser source were less than 7.0 GPa which was below the threshold pressure required to change the mechanical properties of 2024-T851 and 7075-T651. Corrosion studies indicated that laser shocking increased the resistance to local attack in 2024-T351 and 7075-T651. |
| NASA分類 | METALLIC MATERIALS |
| レポートNO | 77N17197
NASA-CR-145132 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/183242 |
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