書誌事項
- タイトル別名
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- Effect of YAG Laser Cutting Pulse Energy on Stretch flangeability of TRIP Steel Sheet with Bainitic Ferrite Matrix
- TRIPガタ ベイニティック フェライト コウハン ノ ノビ フランジセイ ニ オヨボス YAG レーザ セツダン パルス エネルギー ノ エイキョウ
- Effect of YAG Laser Cutting Pulse Energy on Stretch flangeability of TRIP Steel Sheet with Bainitic Ferrite Matrix
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In the present work, effect of YAG laser cutting pulse energy on stretch-flangeability in 0.2C-1.5Si-1.5Mn ultra high-strength TRIP-aided sheet steel with bainitic ferrite matrix (TBF steel) which were austempered at 375 or 450℃ was investigated for automotive applications. The tensile strength (TS) of TBF steel austempered at 375℃ was higher than that of TBF steel austempered at 450℃. The press formability of laser cut surface layer was investigated by hole-expanding test. On the other hand, the stretch-flangeability (λ) of TBF steel in the case of hole-punching austempered at 375℃ was larger than that of TBF steel austempered at 450℃. Further, the stretch-flangeability austempered at 375℃ in the case of laser cutting at 4J/P was larger that that of 450℃. The strength-stretch-flangeability balance (TS×λ) of TBF steel austempered at 375℃ became maximum by laser cutting at 4J/P. The good stretch-flangeability was completed by laser cutting at 4J/P in TBF steel austempered at 375℃. The stretch-flangeability of laser cut hole depended on surface roughness in TBF steel austempered at 375℃. When a suitable condition of laser cutting is selected, the stretch-flangeability of laser cut hole is better than that of punched hole.
収録刊行物
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- 長野工業高等専門学校紀要
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長野工業高等専門学校紀要 41 1-5, 2007-06-30
長野工業高等専門学校
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詳細情報 詳細情報について
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- CRID
- 1050845762544059392
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- NII論文ID
- 110006459726
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- NII書誌ID
- AN00179170
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- ISSN
- 02861909
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- NDL書誌ID
- 8894441
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- 本文言語コード
- ja
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- 資料種別
- departmental bulletin paper
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- データソース種別
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- IRDB
- NDL
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