Education Commons^™

Suitability Of Commercial Certification Assessments For Film And Video Editing Courses, Bobby L Chastain

Open Access Dissertations

A study on the microstructure development of as-cast Cu-Mn alloys based around the congruent minimum at 34.6 wt % Mn and 873 °C was performed. Initially, this was to evaluate the alloy as an alternative to wide freezing range Pb and Sn bronzes that are plagued with porosity. The shallow minimum and associated narrow freezing ranges around the congruent point result in a completely cellular (non-dendritic) solidification morphology for a composition range ~3 wt % Mn about the congruent composition (C _c). The degree of cellular solidification was found to depend on the mold material. Increased mold conductivity lead …