書誌事項
- タイトル別名
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- Effect of Laser Power Density and Scanning Speed on Residual Stress in Laser-Peened Aluminum Alloy
- レーザピーニング ショリ シタ アルミニウム ゴウキン ノ ザンリュウ オウリョク ノ レーザパワー ミツド オヨビ ソウサ ソクド イゾンセイ
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Laser peening has recently been developed as a surface modification technique. When a high-energy laser pulse irradiates a material surface submerged in water, high-pressure plasma is generated immediately on the surface. The plasma induces an impulse wave that penetrates into the surface layer. In the present study, a laser beam of diameter about 10mm is converged by the converging lens with focal length of 250mm, and irradiates the aluminum surface. The second harmonic generation of Yttrium-Aluminum-Garnet (YAG) laser was used at a pulse frequency of 10 Hz. The effect of laser power density and scanning speed on residual stress in the laser peened aluminum alloy surface was investigated by X-ray diffraction. The following results were obtained : (1) compressive residual stress was induced in the surface of all samples ; (2) many fused traces and many micro-cracks were formed in laser peened aluminum surface ; (3) for the series of experiments with the fixed scanning speed of 2.0mm/s, the maximum compressive residual stress was induced at the laser power density of 31MW/mm2 ; and (4) for the fixed laser power density of 61 MW/mm2, that was induced at scanning speed of 1.0mm/s.
収録刊行物
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- 材料
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材料 54 (7), 672-678, 2005
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390001205418449792
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- NII論文ID
- 110006266558
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 7424946
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可