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Prediction of the Failure in Bending for the Valorization of the 2nd and 3rd Generation of Steels for Hot Stamping

Prediction of the Failure in Bending for the Valorization of the 2nd and 3rd Generation of Steels for Hot Stamping

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Available on this site
Format
PDF
Price
Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
Publication code
20225303
Paper/Info type
Proceedings (Spring)

No.69-22

Pages
1-6(Total 6 p)
Date of publication
May 2022
Publisher
JSAE
Language
English
Event
2022 JSAE Annual Congress (Spring)

Detailed Information

Author(E)1) Ludovic Dormegny, 2) Yves Drouadaine, 3) Pascal Dietsch, 4) Clément Philippot, 5) Dominique Cornette, 6) Masahito Katsukura
Affiliation(E)1) ArcelorMittal, 2) ArcelorMittal, 3) ArcelorMittal, 4) ArcelorMittal, 5) ArcelorMittal, 6) ArcelorMittal
Abstract(J)衝突時の侵入防止用途でのAlSiコーティング1.5GPa-HSの拡張に伴い、自動車メーカーは曲げにおける局所的な故障のリスクの増加に対処する必要がありました。 AlSiコーティング-高延性-HSの開発は、曲げ時のリスクを減らし、侵入防止用途でさらに板厚を低減し、エネルギー吸収用途で新しい軽量化の機会を提供することを目的としています。 曲げ、膜、および熱影響部の破損を正しく予測する方法が提案されています。 AlSiコーティングされた1.0GPa-HSは、非常に高い破壊ひずみを実現し、衝突時に大きく変形する部位への適用でより高い軽量化を実現します。 ラボの結果は、そのような冶金学が1500MPaで同じレベルの局所延性に到達することを可能にすることを示しています。

Translation

Abstract(E)The expansion of AlSi-coated-1.5GPa-HS on anti-intrusion applications, carmakers had to manage an increased risk of local failures in bending. AlSi-coated-High-Ductility-HS steel's developments aim at reducing the risk of failure in bending, allowing further thickness reductions on anti-intrusion applications, and offering new weight saving opportunities on energy absorption applications. A method is proposed to correctly predict the failure in bending, in membrane and in heat-affected-zones. AlSi-coated-1.0GPa-HS achieves an extremely high fracture strain and offer more weight saving on applications which are strongly deformed during the crash. Lab results show that such metallurgies would allow to reach the same level of local ductility at 1500MPa.

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