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Item type:Publication, Access status: with files , Phase transformations and stress evolution during laser beam welding and post heat treatment of TiAl-alloys(2015); It is demonstrated that, with application of several preheating and post weld heat treatments, the welding approach developed here is capable of producing a sound joint with an optimised microstructure, low residual stress and good mechanical properties. An understanding of phase transformation during welding and a new concept of grain refinement are explained.Publicationtype: Doctoral Thesis798 1604