Advantages and Disadvantages of SuperalloysSome general advantages of Superalloys are[1,2]:-They posses really good mechanical strengthThey exhibit excellent resistance to thermal creep deformation.They have a good suface stabilityWith superior resistance to carrion or oxidation.Mentioned below are the specific advantages of different super alloyIron Nickel Superalloys[3] :-Iron–nickel super alloys has a low thermal expansion at elevatedtemperatures i.e. they expand less than nickel or cobalt superalloysat high temperature, which is really concerning material property forengine components as they require closely controlled clearancesbetween rotating parts.Iron-Nickel super alloys are cheaper than nickel or cobalt super alloywhich is another advantageCobalt Superalloys[1,2] :-Cobalt super alloys at high absolute temperature absorb stress thisis because they higher melting points than nickel and iron nickelsuper alloys.
