کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5357639 | 1388221 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Laser Shock Processing of 6061-T6 Al alloy with 1064Â nm and 532Â nm wavelengths
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Laser Shock Processing (LSP) has been proposed as a competitive alternative technology to classical treatments for improving fatigue and wear resistance of metals. We present a configuration and results in the LSP concept for metal surface treatments in underwater laser irradiation at 532Â nm and 1064Â nm. The purpose of the work is to compare the effect of both wavelengths on the same material. A convergent lens is used to deliver 1.2Â J/pulse (1064Â nm) and 0.9Â J/pulse (532Â nm) in a 8Â ns laser FWHM pulse produced by 10Â Hz Q-switched Nd:YAG laser with spots of a 1.5Â mm in diameter moving forward along the work piece. A LSP configuration with experimental results using a pulse density of 2500Â pulses/cm2 and 5000Â pulses/cm2 in 6061-T6 aluminum samples are presented. High level compressive residual stresses are produced using both wavelengths. It has been shown that surface residual stress level is comparable to that achieved by conventional shot peening, but with greater depths. This method can be applied to surface treatment of final metal products.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 256, Issue 20, 1 August 2010, Pages 5828-5831
Journal: Applied Surface Science - Volume 256, Issue 20, 1 August 2010, Pages 5828-5831
نویسندگان
G. Gomez-Rosas, C. Rubio-Gonzalez, J.L. Ocaña, C. Molpeceres, J.A. Porro, M. Morales, F.J. Casillas,