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Grain boundary segregation matrix

Figure 7.14(d) represents the two free surfaces created under the conditions of limiting case (2), where there is no time for the adsorbed solute to re-equilibrate with the matrix. The only solute on the free surfaces is that remaining from the grain-boundary segregant. For this case... [Pg.204]

The surface excesses of C, Mn and P were greater than that of Sn but the relative segregation (grain-boundary versus matrix concentration) was larger for the Sn. Indeed, the Sn-containing steel exhibited machinability at least equivalent to that of Pb-bearing steel [18]. Furthermore, Sn is essentially non-toxic. [Pg.207]

Figure 5.43. The Cu L2,3 edge of a Sb-segregated grain boundary compared with the Cu matrix. Figure 5.43. The Cu L2,3 edge of a Sb-segregated grain boundary compared with the Cu matrix.
The segregation of a solute I at an interface

grain boundary (GB) and the crystal interior. This exchange can be represented by the following equilibrium reaction ... [Pg.243]

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See also in sourсe #XX -- [ Pg.526 ]



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