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For strongly correlated f-electron metals it is commonplace for exotic ordered states to occur at temperatures well below the Kondo coherence temperature. More unusual is for phase transitions to emerge from the incoherent f-electron lattice at elevated temperatures, where single ion Kondo physics and strong thermal fluctuations would naively be presumed to be dominant terms. This is despite the prevalence of structural/electronic instabilities in the isolated f-electron elements, where a leading example is plutonium which undergoes six structure changes and features novel behavior including negative thermal expansion in the delta phase. In this talk we will discuss results for two examples: UPt₂Si₂ and UCr₂Si₂. Both systems exhibit phase transitions near room temperature that may involve modulation of the lattice or charge density wave order. In addition, UCr₂Si₂ undergoes a structural phase transition near 210 K. We will focus on efforts to identify the order parameters for these phases.