Development of a wear resistant and stress adapted modular build tool, manufactured out of a ceramics reinforced metal matrix composite material (MMC), for the use in hot forging industry

热成形工具受到高热应力、机械应力、化学应力和摩擦学应力的局部影响，这些应力通常同时发生。特别是在高温应用过程中发生的热软化，往往导致传统锻造工具由于雕刻区域的塑性变形而过早失效。提出的研究项目的总体目标是开发出一种新的金属基复合材料（MMC）的组件，以增加热成形工具的耐磨性。此外，还研究了MMC -组分与压实材料之间的联系。因此，将开发一种通过使用梯度陶瓷增强相来建设性地适应当前载荷的压力成形工具。所提出的成形工具将由几个部件组成。主体将采用传统工具钢，而高应力区域将采用新开发的由钢粉和陶瓷硬材料组成的MMC制造。所使用的MMC由陶瓷增强相的层状结构指定。随着陶瓷增强相浓度的降低，雕刻处的力学性能较好，与主体的结合质量也较好。为了在致密材料和MMC -组件之间达到足够的粘合质量，在本研究中，将开发许多连接操作并相互比较。最后，在自动化动力压力机的压力成形过程中，详细检查了所开发的锻件的操作行为。

Hot forming tools are locally influenced by high thermal, mechanical, chemical and tribological stresses, which usually occur at the same time. Particularly the thermal softening, which occurs during high temperature applications, often leads to premature failure of conventional forging tools due to plastic deformation in the engraving area.The overall objective of the proposed research project is to develop components out of a new metal matrix composite material (MMC) to increase the wear resistance of hot forming tools. Furthermore, the linkage between the MMC - component and the compact material is investigated. Therefor a pressure forming tool, which is constructively adapted to the present loads by using graded ceramic reinforcing phases, will be developed.The proposed forming tool will be composed out of several components. The main body will be made of conventional tool steel, while the highly stressed areas will be manufactured out of a newly developed MMC consisting of steel powder and ceramic hard material. The used MMC is specified by a layered structure of the ceramic reinforcing phase. A decreasing concentration of the ceramic reinforcing phase will simultaneous lead to strong mechanical properties at the engraving and good bonding qualities to the main body. To achieve a sufficient bonding quality between the compact material and the MMC - component, within this research, a number of joining operations will be developed and compared with one another. Finally, the operational behavior of the developed forging tools is examined in detail using a pressure forming process on an automated power press.