| Title |
Effects of Heat Treatment Conditions and Amount of Cold Swaging on Mechanical Properties of Continuously Cast Cu-9Ni-6Sn Alloys |
| Authors |
류재철(J . C . Rhu) ; 김상식(S . S . Kim) ; 정윤철(Y . C . Chung) ; 한승전(S . Z . Han) ; 김정윤철(C . J . Kim) ; 한승전() ; 김창주() |
| Abstract |
In the present study, tensile properties of continuously cast and swaged Cu-9Ni-6Sn alloys were examined. Solutionized and aged Cu-9Ni-6Sn alloys, with 95% swaging, showed a multi-stage change in tensile strength with aging time, probably due to the sequential occurrence of spinodal decomposition, formation of γ` and recrystallization. The change in tensile strength with aging time for the aged specimens without solution heat treatment was, on the other hand, minimal. A complex interaction between the decrease in dislocation density, formation of equilibrium phases and refinement of Sn-rich phases is believed to be responsible for such a lean sensitivity. Spinodal decomposition in Cu-Ni-Sn alloys appears to be restricted with increasing the amount of cold deformation. |