Abstract

Iron and aluminum form a number of intermetallic phases, which have a quite high hardness and can be used for manufacturing parts of equipment operating under abrasive wear conditions. In addition, the advantage of applying iron–aluminum intermetallic alloys is a low cost and the lack of deficiency of the alloy components (aluminum, iron). However, all intermetallic compounds of this system have a high brittleness, and this fact restricts the region of applying the alloys based on iron–aluminum intermetallic phases. As an alternative to the parts made of the intermetallic alloys, steel–iron aluminide composites are proposed. The technology of manufacturing these composites is described. The studies performed in this work show that the proposed technology enables the formation of composite materials of adequate quality. The ultimate compressive strength of porous steel is ~145 MPa, and that of the composite material is higher than 435 MPa. The hardness of the intermetallic portions of the composite material is 385–400 HB, and the relative wear resistance of the composite material is ~6.

中文翻译：

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钢-铝化铁复合材料的形成和性能

摘要

铁和铝形成许多金属间相，这些金属间相具有相当高的硬度，可用于制造在磨料磨损条件下运行的设备零件。另外，使用铁铝金属间合金的优点是成本低，并且缺乏合金成分（铝，铁）。但是，该系统的所有金属间化合物都具有很高的脆性，这一事实限制了基于铁铝金属间相的合金的应用范围。作为金属间合金制成的零件的替代方案，提出了钢-铁铝化物复合材料。描述了制造这些复合材料的技术。在这项工作中进行的研究表明，所提出的技术能够形成足够质量的复合材料。多孔钢的极限抗压强度约为145 MPa，复合材料的极限抗压强度高于435 MPa。复合材料的金属间化合物部分的硬度为385–400HB，复合材料的相对耐磨性约为6。