molybdenumiron

Molybdenumiron, or Fe-Mo, refers to a binary alloy system consisting of iron and molybdenum in variable proportions. It is not a single fixed compound but describes alloys in which molybdenum is dissolved in iron or forms intermetallic phases such as Fe2Mo and Fe3Mo2 at higher Mo contents. The phase diagram of the Fe–Mo system shows limited solubility of Mo in ferrite and austenite and the tendency to form intermetallic compounds upon slow cooling.

Mechanical properties: The alloy typically exhibits higher strength and hardness than pure iron, particularly at elevated temperatures, due to solid-solution strengthening from molybdenum and possible precipitation of molybdenum-rich phases. Ductility tends to decrease with increasing molybdenum content. The density is higher than that of plain iron and increases with Mo content. Corrosion resistance is improved relative to carbon steels, and the alloy can show better creep resistance at high temperatures compared with iron at the same carbon content.

Processing: Molybdenumiron can be produced by melting and alloying processes, followed by hot-working and heat treatment to obtain a desired microstructure. Heat treatments such as annealing or tempering can adjust toughness and strength, and carbide formation may occur if carbon is present.

Applications: In research and specialized engineering, Mo-containing iron alloys are explored for high-temperature components, wear-resistant parts, and chemical-processing equipment where high melting point and strength are advantageous.