Alloying steel with molybdenum can have several effects on the properties of the resulting alloy.
Firstly, molybdenum improves the hardenability of steel, which is the ability of the steel to be hardened by heat treatment such as quenching and tempering. This is because molybdenum forms very hard carbides with carbon, which can help to form a fine and uniform microstructure in the steel.
Secondly, molybdenum increases the high-temperature strength and creep resistance of steel. This is because molybdenum has a high melting point and forms stable carbides, which help to prevent the grains in the steel from growing at high temperatures.
Thirdly, molybdenum improves the corrosion resistance of steel, particularly in acidic environments. Molybdenum can form a passive oxide layer on the surface of the steel, which protects it from further corrosion.
Overall, alloying steel with molybdenum can result in an alloy with improved strength, toughness, hardenability, and corrosion resistance.
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