Investigations on the elongation differences of aluminum in two layer roll bonding
Investigations on the elongation differences of aluminum in two layer roll bonding
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DOI：
10.1063/1.5008228
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发表时间：
2017-10
期刊：
影响因子：
--
通讯作者：
Alina Melzner;G. Hirt
中科院分区：
文献类型：
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作者：
Alina Melzner;G. Hirt
辊压焊用于通过组合不同的合金来生产具有优化的全厚度材料特性的半成品。材料之间的结合是在轧制过程中由于在高压下发生的表面扩大而产生的。根据轧制过程的工艺参数和材料流，在辊缝出口处直接形成并保持或破坏粘结。这种粘结层的分层可能是由各个层的长度差异引起的，这将剪切应力引入粘结区。因此，每层的伸长率可用作评估工艺条件的指标。为了研究哪些工艺参数是有利的或有害的一个成功的债券形成，本研究系统地研究了重要的工艺参数和它们的影响，在轧制两层三明治的伸长率。为了解释一个广泛的参数谱有限元夹层轧制模型的介绍和验证轧制试验。
Roll bonding is used to produce semi-finished products with optimized through-thickness material properties by combining different alloys. The bond between the materials is created during rolling due to surface enlargement occurring under high pressure. Depending on the process parameters of the rolling process and the materials flow, a bond is created and maintained or destroyed directly at the roll gap exit. This delamination of the bond can be caused by length differences of the individual layers, which introduce shear stresses into the bonding zone. Thus, the elongation of each layer can be used as an indicator to evaluate the process conditions. In order to investigate which process parameters are advantageous or detrimental for a successful bond formation, this study systematically investigates important process parameters and their effects on the elongation in rolling a two layer sandwich. To account for a wide parameter spectrum a FE sandwich rolling model is introduced and validated by rolling tr...