β'単相Cu-41.7wt%Zn合金の低温焼なましで生成するα相の形態

概要

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The accurate orientation of β' matrix was determined first by SEM-ECP, and then α phase which transformed from the β' matrix during lower temperature annealing was observed as an emobossed form by a preferential deep etching method. The embossed α phase at (011) matrix plane could be divided into two groups in shape as triangles and bend bars. The center line of the triangular α phase was aimost parallel to (200) band of SEM-ECP from β' matrix, and sharp corner, at which the centerline was connected, had an angle about 70゜. At (001) matrix plane, an embossed α phase aiso showed a triangular shape and a sharp coener of triangle, which connected with the center line, was embedded into β' matrix. From SEM-ECP, senter line of triangular α phase at (001) matrix plane was parallel to (200) band of SEM-ECP too. At (111) matrix plane, it was clear that the α phase consisted of one pair of two α plates. Such a pair of α plates were frequently combined with other pairs and then the more complex form built up. Especially, at (001) matrix plane, a pyramid like shape which consisted of four pairs of α plates was observed.
社団法人日本材料学会の論文
1992-02-15