| Title |
Effect of Al on the Diffusivity of Mn in the Cu - Mn - Al Alloy |
| Abstract |
Interdiffusion coefficients of manganese D～_(Mn) were investigated as the functions of solute atoms of manganese and impurity atoms of aluminum in FCC-γ phase of Cu-Mn-Al ternary alloy at 800℃ by using the vapor-solid couple method. Diffusivity of manganese are gradually increased by the addition of manganese, but decreased by the addition of aluminum. D～_(Mn) in Cu-Mn binary alloy is 0.50×10^(-9) ㎠/sec at 10a/o Mn, 0.93×10 D～_(Mn) ㎠/sec at 20a/o Mn, but it is decreased by the addition of 0.5a/o Al to 0.43×10^(-9) ㎠/sec at 10a/o Mn, 0.82×10^(-9) ㎠/sec at 20a/o Mn. |