ME 2733 Chapter : Chapter 10 Vocabulary
Document Summary
Chapter 10 vocabulary: alloy steel - a ferrous (or iron-based) alloy that contains appreciable concentrations of alloying elements (other than c and residual amounts of mn, si, s, and p). These alloying elements are usually added to improve mechanical and corrosion-resistance properties: athermal transformation - a reaction that is not thermally activated, and usually diffusionless, as with the martensitic transformation. Normally, the transformation takes place with great speed (i. e. , is independent of time), and the extent of reaction depends on temperature: bainite - an austenitic transformation product found in some steels and cast irons. It forms at temperatures between those at which pearlite and martensite transformations occur. The microstructure consists of a-ferrite and a fine dispersion of cementite. Coarse pearlite - pearlite for which the alternating ferrite and cementite layers are relatively thick. Continuous-coolingtransformation diagram - a plot of temperature versus the logarithm of time for a steel alloy of definite composition.
