Effects of laser-peening parameters on plastic deformation have been investigated through hardness measurements. The laser-peening parameter consisting of laser parameters, pressure of laser-produced plasma, propagation of laser-induced shock wave and initial state of target material should be optimized for efficient laser peening. The laser parameters are one of the important factor, thus laser intensity and coverage which corresponds to the number of laser shots irradiated per unit of area have been changed to estimate the laser peening effect in this study. Second harmonic of Nd:YAG laser having the pulse duration of 4 ns has been used. Commercial SUS316L stainless steel has been adopted as a sample. The samples were investigated under nanosecond laser-shock loading in plasma confined by water. Vickers microhardness is used to probe work hardening due to plastic deformation induced by laser peening. Through hardness measurements, it is found that desirable coverage for producing the plastic deformation has been existed, which depends on the laser irradiation intensity.
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ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing
September 23–27, 2012
Anaheim, California, USA
ISBN:
978-0-912035-96-3
PROCEEDINGS PAPER
Effects of laser-peening parameters on plastic deformation of SUS316L
Kohei Mizuta;
Kohei Mizuta
1
Program in Electronic Engineering
, Interdisciplinary Graduate Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
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Miho Tsuyama;
Miho Tsuyama
1
Program in Electronic Engineering
, Interdisciplinary Graduate Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
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Makoto Takahashi;
Makoto Takahashi
2
Joining and Welding Research Institute
, Osaka University, 11-1 Mihoga-oka, Ibaraki, Osaka 567-0047 Japan
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Toshiya Shibayanagi;
Toshiya Shibayanagi
3
Program in Materials Science and Engineering
, Faculty of Engineering, Toyama University, 3190 Gofuku, Toyama, Toyama 930-8555 Japan
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Hitoshi Nakano
Hitoshi Nakano
1
Program in Electronic Engineering
, Interdisciplinary Graduate Faculty of Science and Engineering, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
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Published Online:
September 01 2012
Citation
Kohei Mizuta, Miho Tsuyama, Makoto Takahashi, Toshiya Shibayanagi, Hitoshi Nakano; September 23–27, 2012. "Effects of laser-peening parameters on plastic deformation of SUS316L." Proceedings of the ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. ICALEO 2012: 31st International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Anaheim, California, USA. (pp. pp. 1192-1195). ASME. https://doi.org/10.2351/1.5062407
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