The dynamic evolution of microstructure and the characteristics of deformation , as well as the relationshipbetween them have ben studied for TCll alloy with different original conditions, including as-cast, as-rolled...The dynamic evolution of microstructure and the characteristics of deformation , as well as the relationshipbetween them have ben studied for TCll alloy with different original conditions, including as-cast, as-rolled ,as-forged and as-predeformed on casting, during comparison at constant temperature (CCT). The resultsshow that (1) Micrcotructural process during CCT of cast TCll comprises two stages: (i) Founding ofu dynamic equilibrium ”. Original coarse structure breaks up and becomes equiaxed, while the stras decreasesaccordingly. The microstructure gradually trends towards some kind of “dynamic ellullibrium” morphology;(ii) Keeping of “dynamic equilibrium”. Both stress and micrcostructural morphology preserve stable althoughdeformation continues. (2) The final pouilibrium morphology das not depend on its initial microstructure, buton the parameter Z(T, e) .展开更多
文摘The dynamic evolution of microstructure and the characteristics of deformation , as well as the relationshipbetween them have ben studied for TCll alloy with different original conditions, including as-cast, as-rolled ,as-forged and as-predeformed on casting, during comparison at constant temperature (CCT). The resultsshow that (1) Micrcotructural process during CCT of cast TCll comprises two stages: (i) Founding ofu dynamic equilibrium ”. Original coarse structure breaks up and becomes equiaxed, while the stras decreasesaccordingly. The microstructure gradually trends towards some kind of “dynamic ellullibrium” morphology;(ii) Keeping of “dynamic equilibrium”. Both stress and micrcostructural morphology preserve stable althoughdeformation continues. (2) The final pouilibrium morphology das not depend on its initial microstructure, buton the parameter Z(T, e) .