| Popis: |
An investigation of the long range ordering and secondary phase reactions in HAYNESe 242” alloy, and their relationships to the mechanical properties of this age-hardenable material, has been conducted. The structure and property responses of the material to various intermediate temperature heat treatments interposed between a solution treatment and final aging treatment have been evaluated for a range of commercial heat chemistries utilizing elevated temperature tensile testing, as well as metallographic, TEM, SEM and extraction/x-ray diffraction techniques. Results of this work indicate that these interposed intermediate temperature heat treatments have major effects upon nature of the ordered domains formed in the material during final aging, the nature and morphology of secondary phases found, and the final mechanical properties exhibited by the alloy. Results also indicate that small variations in heat chemistry can exert a measureable influence upon both structure and properties. |
