Predicting the properties of a material undergoing this process can be tracked by following a certain diagram’s C and Ps (“P-S”) curves. One form of this process is divided into bubble forming, vapor transport, and liquid contact phases. This process is represented by descending on the y-axis until hitting “the knee” of a TTT diagram. The rate of this process determines whether austenite transitions into pearlite, bainite, or martensite (10[1])(“martins-ite”). A solid undergoes (10[1])this process more slowly than expected after being immersed in water due to the formation of a steam layer (10[1])in the Leidenfrost (10[1])(“ley-den-frost”) effect. In metallurgy, a metal is dunked in oil or water in order for the metal to rapidly undergo this process during quenching. (10[1])For 10 points, (-5[1])name this process in which the temperature of a material decreases. ■END■ (10[1])