Multilayers design for the electromagnetic sheet metal forming die

被引：13
|
作者：
Tillmann, Wolfgang [1 ]
Vogli, Evelina [1 ]
机构：
[1] Univ Dortmund, Inst Mat Engn, D-44227 Dortmund, Germany
来源：
ADVANCED ENGINEERING MATERIALS | 2008年 / 10卷 / 1-2期
关键词：
D O I：
10.1002/adem.200700212
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Multilayer coatings consisting of TiAlN and metallic Ti or TiAl have been designed and analyzed for electromagnetic forming (EMF)-process dies. Multilayer coatings of Ti/TiAlN, and TiAl/TiAlN were deposited on dies in a high ionization magnetron sputtering PVD device. The wear resistance of multilayer systems reflects the evolution of hardness and adhesion. It was observed that the wear resistance improved with decreasing Ti-interlayer thickness for Ti/TiAlN-systems and with increasing TiAl-interlayer thickness for TiAl/TiAlN-system. With increasing the system hardness by decreasing the metallic interlayer thickness, the accumulation in the center of impact cavity was reduced, which confirmed the increase in Ti/TiAlN-layers toughness. The Ti/TiAlN-system exhibited better impact forming behavior compared to the TiAl/TiAlN-system. The application of these multilayer systems for dies in combination with MoS2 exhibited a low affinity to aluminum workpieces in the EMF-process.
引用
收藏
页码：79 / 84
页数：6
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