Nickel

Nickel: 

Nickel What are the main reasons behind alloying the elements?

Slide 2: 

The main reasons behind alloying the elements is to increase various properties such as hardenability,corrosion resistance,toughness,strength,magnetic properties,machinability & to prevent brittleness.

Nickel: 

Nickel About 2-5% Nickel is added to steel to improve toughness And 12-20%to increase corrosion resistance

Microstructure of nickel steel: 

Microstructure of nickel steel

nickel steels: 

nickel steels Nickel steels are widely used for parts subjected to fatigue and impact load . They possess greater tensile strength together with considerable ductility and toughness. The most nickel steels contain 0.25 to 0.4 % Carbon and 1 to 5 % nickel. These steels normally contain small amounts of manganese to stabilise the carbide phase.

nickel steels: 

nickel steels Steels with high nickel content are extremely tough and are highly resistance to corrosion. They also have low coefficient of thermal expansion i.e. they expand very little with the change in temperature.

applications: 

applications Nickel steels with composition 0.40% carbon, 1.50% manganese & 1.0% nickel is used in making

crank shafts: 

crank shafts

axles: 

axles

Connecting rods: 

Connecting rods

Slide 11: 

Nickel steels with composition 0.12% carbon, 0.45% manganese & 3.0% nickel is used in making

cam shafts: 

cam shafts

Gudgeon pins: 

Gudgeon pins

Differential pinions: 

Differential pinions