IMMPETUS is an acronym for "Institute for Microstructural and Mechanical Process Engineering: The University of Sheffield". IMMPETUS enjoys widespread international acclaim for our unique approach to thermomechanical processing of metals. Initially, the research done within IMMPETUS focused almost entirely on steel, with some aspects of aluminium; now, the major focus of the research institute is (i) on high value-added process routes, particularly for the aerospace sector, of high performance Ti alloys, Ni base superalloys and wrought magnesium alloys and (ii) to develop physical understanding, combined with modelling to give a unique hybrid methodology with unprecedented precision for prediction of microstructure as a function of process condition. New research programmes are under way to develop high temperature alloys as potential alternatives to Ni superalloys and metallic biomaterials. Another new activity is near net-shape processing through powder injection moulding, laser and electron beam deposition, with direct involvement from aerospace sector companies. The institute has achieved a high profile international reputation for the quality and innovation of its research.