Effect of Mechanical Cut-Edges on the Fatigue and Formability Performance of Advanced High-Strength Steels

被引:0
|
作者
Daniel J. Thomas
机构
[1] Materials Research Centre,
[2] College of Engineering,undefined
[3] Swansea University,undefined
关键词
Cut-edge fatigue; Automotive manufacturing; Forming; Hole expansion capacity;
D O I
10.1007/s11668-012-9591-z
中图分类号
学科分类号
摘要
Mechanical cut-edge properties influence the fatigue lives and formability capacity of advanced high-strength steels. This factor is critical as S355MC and DP600 exhibited an increased sensitivity to fatigue cracks initiating from defects on the cut-edge fracture zone. Mechanical cut-edges as a result displayed a decreased level of formability that was highly dependent on the cut-edge surface and internal microstructure of the cut-edge produced. It was determined that, by controlling the mechanical clearance, optimized mechanical cut-edges were produced. This was achieved through minimizing surface damage and by controlling the internal and topographical properties of the cut-edge zones.
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页码:518 / 531
页数:13
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