Bendability of advanced high strength steels-A new evaluation procedure
Bendability of advanced high strength steels-A new evaluation procedure
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DOI：
10.1016/j.cirp.2013.03.049
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发表时间：
2013-01-01
影响因子：
4.1
通讯作者：
Merklein, Marion
中科院分区：
文献类型：
--
作者：
Kaupper, Markus;Merklein, Marion
与低碳钢相比，先进高强度钢 (AHSS) 的显着轻量化工程潜力受到其适度的可成形性和改变的失效行为的限制。尤其是弯曲性在汽车应用中至关重要。这项工作揭示了 AHSS 小曲率弯曲中的失效现象和潜在的损伤机制。提出了一种基于光学应变测量的新表征方法，以独立于用户的方式全面识别故障阶段、临界应变和弯曲角度。这种新颖的方法具有普遍性和广泛适用性。因此，它为未来改进和材料特定的工业工艺设计提供了先决条件。 (c) 2013 CIRP。
The significant lightweight engineering potential of advanced high strength steels (AHSS) is limited by its moderate formability and altered failure behavior compared to mild steel grades. Especially bendability is crucial in automotive applications. The failure phenomena and underlying damage mechanisms in small curvature bending of AHSS are revealed in this work. A new characterization approach based on optical strain measurement is presented to comprehensively identify the failure stages, critical strains and bending angles in a user-independent manner. The novel approach is generalized and broadly applicable. Thus it gives a prerequisite for improved and material specific industrial process design in future. (c) 2013 CIRP.