Alloy are relatively similar in size, the atom exchange method usually happens, where some of the atoms composing the metallic crystals are substituted with atoms of the other constituent. This is called a "substitutional alloy". Examples of substitutional alloys include bronze and brass, in which some of the copper atoms are substituted with either tin or zinc atoms respectively. In the case of the interstitial mechanism, one atom is usually much smaller than the other and can not successfully substitute for the other type of atom in the crystals of the base metal. Instead, the smaller atoms become trapped in the
Fish and Tin and Copper Fish and Tin and Copper Fish and Tin and Copper is a traditional folk song/ballad associated with Cornwall, and dealing with the legend of the devil ("Old Nick") visiting Cornwall and being frightened away, fearing that he'd be made into a Cornish pasty filling. It used to be said that the devil never came to Cornwall: he once reached Torpoint and immediately noticed that various kinds of pie were customary; he feared that devilly pie might be the next kind so returned to Devon. The title comes from the three primary industries of Cornwall, Fish, Tin, and Copper. The reference