Influence of a local laser heat treatment on the bending properties of aluminium extrusion profiles
Influence of a local laser heat treatment on the bending properties of aluminium extrusion profiles
复制标题
局部激光热处理对铝挤压型材弯曲性能的影响
DOI：
10.1016/j.procir.2018.08.011
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Merklein
中科院分区：
文献类型：
--
作者：
Graser;Pflaum;Merklein
在生态和经济需求的推动下，轻量化设计以及在此背景下，以铝取代钢已成为汽车行业的一大趋势。然而，铝合金的低成形性限制了设计的可能性。克服这些限制的一种方法是使用量身定制的热处理半成品。通过局部短期热处理，可以软化不同的区域，从而改善进入关键成形区的材料流动。通过试验弯曲试验，分析了局部短时热处理对铝型材成形性的影响。目的是提高最大可及弯曲角以及减少横截面变形。因此，激光辐照应用了不同的热处理布局。最后，对弯曲结果进行了评估，并提出了有前景的热处理策略。
Driven by ecological and economical demands, lightweight design and in this context, the substitution of steel by aluminium has become a major trend in the automotive industry. However, design possibilities are limited by the low formability of aluminium alloys. One approach to overcome these limitations is the usage of tailor heat treated semi-finished products. By a local short-term heat treatment, distinct areas are softened, which can be used to improve the material flow into critical forming zones. Within this work, the influence of local short-term heat treatment on the formability of aluminium extrusion profiles is analysed by experimental bending tests. Aims are the enhancement of maximum reachable bending angles as well as the reduction of cross section deformations. Therefore, different heat treatment layouts are applied by laser irradiation. Finally, the bending results are evaluated and promising heat treatment strategies are derived.