Copper Clad Steel Strips Produced by a Modified Twin-Roll Casting Process
Copper Clad Steel Strips Produced by a Modified Twin-Roll Casting Process
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DOI：
10.3390/met9111156
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发表时间：
2019-11-01
期刊：
影响因子：
2.9
通讯作者：
Hirt, Gerhard
中科院分区：
文献类型：
--
作者：
Muenster, Dennis;Hirt, Gerhard
钢的双辊薄带铸造提供了直接从液相生产薄热带的资源和能量有效的方式。复合金属为广泛的应用提供了成本较低的整体合金替代品，但其各种生产路线广泛，昂贵或缓慢。为了充分发挥双辊薄带连铸的优势，为复合薄带的生产提供一种更经济、更节能的生产途径，对双辊薄带连铸工艺的扩展进行了研究。目前研究的目标是钢与铜的结合。为此目的，在双辊铸带过程中插入预制的工业纯铜覆层带。铜带和铸钢带（DC 01）之间的结合通过利用工艺热来实现。随后在光学显微镜下和电子显微探针分析仪中分析了复合带的结合区。图像显示了一个不规则的粘结界面，直线和局部改变的区域交替出现。这些不规则性可以根据其形态和可疑的形成机制分为四组。在轧制和弯曲试验中定性地检查复合带的结合强度和成形性。轧制是可能的，没有分层和总高度减少约。40%，而2 mm和3 mm厚的试样的无缺陷弯曲可能达到90度的弯曲角度，弯曲半径为5 mm。
Twin-roll strip casting of steel provides a resource and energy efficient way to produce thin hot strips directly from the liquid phase. Clad metals offer less costly alternatives to monolithic alloys for a wide range of applications, but their various production routes are extensive, expensive, or slow. In order to exploit the strengths of twin-roll strip casting to provide a possibly more cost and energy efficient production route for clad thin strips, research into the expansion of twin-roll strip casting process is conducted. The aim of the current research is the combination of steel with copper. For this purpose, a prefabricated cladding strip of commercially pure copper is inserted into the twin-roll strip casting process. Bonding between the copper strip and the cast steel strip (DC01) is realized by exploiting the process heat. The bonding zone of the clad strip is subsequently analyzed under the optical microscope and in the electron micro probe analyzer. The imagery shows an irregular bonding interface with straight and locally altered regions alternating. These irregularities can be classified into four groups based on their morphology and suspected forming mechanism. Bond strength and formability of the clad strips is qualitatively examined in rolling and bending tests. Rolling was possible without delamination and a total height reduction of approx. 40% while defect-free bending of 2 mm and 3 mm thick specimens was possible up to a bending angle of 90 degrees for a bending radius of 5 mm.