Functionally Graded Mo sintered steels
DOI:
https://doi.org/10.3989/revmetalm.081Keywords:
Functionally graded, Mechanical properties, Molybdenum alloyed steel, Nitrogen, SinteringAbstract
Functionally graded materials (FGM), the multi-materials, strive to satisfy the numerous requirements demanded of parts in a given combination of compositions and microstructures. The required material compatibility lead the manufacturing process and the achieving of an interface, not always diffuse. Powder metallurgy is one of the techniques used in manufacturing functionally graded materials, in particular the compaction matrix of the possible techniques for forming these materials. In this paper, a process of forming a functionally graded steel based on the use of a high molybdenum steel with cooper and other steel with copper, without molybdenum, is proposed with the aim of concentrating this element to the surface of the workpiece, increasing the mechanical strength. The study is completed with the evaluation of physical properties (density and porosity distribution), mechanical properties (hardness, tensile strength and elongation) and microstructural analysis by optical and scanning electron microscopy.
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