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Component a chemical substance element or compound

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Unformatted text preview: mperature. Another macroscopic property coherent interface Anwith a strongseparatingtotwo bond-energy curve is interface connection the phases the coefficient of thermal expansion, t h . As temperature increases, the atoms gain where are able a one-to-one match of lattice planes energy andthere isto “move up” the sides of the energy well. Figure 2.5–2a shows that at across the boundary. to the energy E* there are two values of x with the same a temperature corresponding value of E*. If the atom is assumed to vibrate between these two positions, then the midcold working Plastic deformation of a metal or alloy point represents an average separation distance. By drawing a series of constant-energy at a temperature where dislocations are created faster than they are annihilated. component A chemical substance (element or compound) used to specify the composition of an alloy. | | e-Text Main Menu | Textbook Table of Contents composites Materials formed by combining two or more basic materials in which one material, called the reinforcing phase, is in the form of fibers, sheets, or particles embedded in another material, called the matrix. compression molding A process by which a raw material is shaped by heating and squeezing into the desired shape between two platens that act as molds. concentration polarization A mechanism by which v ing two materials in which a l is sandwiched between the the temperature is raised metal but not high enough to ned. ribe materials that are unable g” but instead fracture bjected to external loads. For window is brittle, while the ot. More precisely, brittle re strain. drawn around a dislocation that would normally close if side of the circuit. FIGURE 2.5–1 v eristic angle between an atom t neighbors. The term is most fic bond angles in covalent pg041 [R] G1 7-27060 / IRWIN / Schaffer pgm 1-19-98 plm 3-21-98 MP x Atomic Scale Structures Energy Energy Chapter 2 x B E* A xo (a) (b) FIGURE 2.5–2 Relationship between the bond-energy curve and the coefficient of thermal expansion. (a) The dashed line passes through the midpoints of the constant-energy line segments and indicates that...
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