Alloying of molybdenum

by Izzy X. Product specialist

The alloying principle of molybdenum is similar to that of tungsten. All the strengthening methods used to improve the heat resistance of tungsten are basically applicable to molybdenum.

Recommended Features

Solution strengthening
Molybdenum precipitation strengthening
Molybdenum compound strengthening
Molybdenum reinforced compound
Relay enhancement

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Review on Alloying of molybdenum

Solid solution strengthening includes the addition of trace elements and high content elements.
The trace element solid solution strengthening method mainly refers to adding a trace amount of Ti, Zr, Fe, Mn, La, B and other alloy elements for solid solution strengthening to improve the performance of molybdenum. When trace elements are added, a certain amount of carbon is often added to the alloy. It is the alloy elements and carbon that form carbide dispersed particles to strengthen the strengthening effect.
High content element solid solution strengthening
The elements that improve the binding force between atoms of the molybdenum alloy and form a continuous solid solution are tungsten, tantalum, and rhenium. Tantalum and rhenium are scarce metals, the main alloy of solid solution strengthening with high content of elements is Mo-W alloy. The strength of the alloy increases with the increase of tungsten content, but its thermal deformation performance deteriorates with the increase of tungsten content, so the content of tungsten should not exceed 30%. The alloy has a very low ductility-brittle transition temperature due to the "rhenium softening effect". Commonly used molybdenum-rhenium alloys are Mo-5Re, Mo-41Re and Mo-50Re.
The solid solution strengthening alloy elements are mainly Ti, W, Re, and the typical alloys are Mo-0.5Ti, Mo-30W, Mo-41Re. The recrystallization temperature is 1100-1300, 1200, 1200-1300.

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