Preface

Abstract

This year the Risø International Symposium on Materials Science is celebrating its 40th year jubilee. During this 40-year period, significant progress has taken place and new discoveries and understanding in the field of material science and engineering have materialized in advanced metals and alloys with wide applications in society. In parallel, there has been an unprecedented development of 2D, 3D and 4D characterization techniques operating on multiple length scales down to the atomic dimension. The development has led to revision and foundation of fundamental principles and models for example in the areas of deformation, recovery and recrystallization of metals and alloys. This in-turn has led to new and demanding challenges that are addressed in the Proceedings. The challenges include:• Transitional stages in the evolution of deformation microstructure and strengthening mechanisms.• Effects of local microstructural variations on the evolution of microstructures during annealing• 2D, 3D and 4D characterization techniques based on for example x-rays and electron microscope techniques in the laboratory and at international facilities.• Microstructural variations at different length scales which is of critical importance for the properties and performance of metals and alloys for engineering applications.• Advanced and new processing techniques of bulk materials and by application of powder metallurgy in additive manufacturing and spark plasma sintering processes.• Experimental findings in 3D and 4D used as input to as well as validation of analytical and numerical models.The metals and alloys investigated are of fcc, bcc and hcp structure, in bulk form or present as gradients or multilayer structures.The Proceedings contain 15 keynote, 11 invited and 34 contributed presentations covering the above-mentioned key themes. It is our hope that Proceedings can inspire the future development of this field.