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首页> 外文会议>Powder metallurgy world congress amp; exhibition >Microstructural Design of Fe-Base Metal Matrix Composites with Superior Corrosion and Wear Resistance
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Microstructural Design of Fe-Base Metal Matrix Composites with Superior Corrosion and Wear Resistance

机译：具有优异的耐腐蚀和耐磨性能的铁基金属基复合材料的组织设计

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摘要

Due to a combined attack of corrosion and wear in many applications of modern economy, corrosion and wear resistant cold work tool steels were developed. The corrosion resistance is provided by a sufficient amount of chromium in the metal matrix and the wear resistance due to carbides dispersed in a martensitic matrix. A further gain in wear resistance is possible by addition of hard phases in an amount up to 40 vol.-% for obtaining a particulate reinforced metal matrix composite (MMC). The common processing route for these MMC is hot isostatic pressing. By means of the powder metallurgy route the microstructure can be designed with regard to the required properties, for instance bending strength or wear resistance. In addition, protective coatings can be applied to low alloyed substrates, for instance by HIP-cladding, to increase the lifetime of tools. Hence, the authors also investigated the interface between a steel substrate and a coating of plastic mould steel formed by diffusion welding during HIP.
机译：在现代经济的许多应用中，由于腐蚀和磨损的共同作用，开发了耐腐蚀和耐磨的冷作工具钢。通过在金属基体中提供足够量的铬，以及由于碳化物分散在马氏体基体中而产生的耐磨性，可以提供耐腐蚀性。为了获得颗粒增强的金属基复合材料（MMC），通过添加高达40体积％的硬质相可以进一步提高耐磨性。这些MMC的常见加工路线是热等静压。借助粉末冶金路线，可以根据所需的性能例如抗弯强度或耐磨性来设计微结构。另外，可以通过例如HIP覆层将保护涂层施加到低合金基体上，以增加工具的使用寿命。因此，作者还研究了在HIP期间通过扩散焊接形成的钢基材与塑料模具钢涂层之间的界面。

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