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By the late 1940s, and since then, the continuous development of dislocation theories have provided the basis for correlating the macroscopic time-dependent deformation of metals and alloys—known as creep—to the time-dependent processes taking place within the metals and alloys. High-temperature deformation and stress relaxation effects have also been explained and modeled on similar bases. The knowledge of high-temperature deformation as well as its modeling in conventional or unconventional situations is becoming clearer year by year, with new contemporary and better performing high-temperature materials being constantly produced and investigated.This book includes recent contributions covering relevant topics and materials in the field in an innovative way. In the first section, contributions are related to the general description of creep deformation, damage, and ductility, while in the second section, innovative testing techniques of creep deformation are presented. The third section deals with creep in the presence of complex loading/temperature changes and environmental effects, while the last section focuses on material microstructure–creep correlations for specific material classes. The quality and potential of specific materials and microstructures, testing conditions, and modeling as addressed by specific contributions will surely inspire scientists and technicians in their own innovative approaches and studies on creep and high-temperature deformation.

Larson–Miller parameter --- n/a --- visualization --- bond coat --- hydrogen --- poly-crystal --- Gibbs free energy principle --- constitutive equations --- creep damage --- DFT --- finite element method --- austenitic stainless steel --- strain rate sensitivity --- MCrAlY --- excess volume --- superalloy --- scanning electron microscopy --- creep buckling --- dislocation dynamics --- creep --- elevated temperature --- modelling --- size effect --- residual stress --- superalloy VAT 32 --- water vapor --- activation energy --- small angle neutron scattering --- superalloy VAT 36 --- metallic glass --- iron aluminides --- Gr.91 --- internal stress --- relaxation fatigue --- multiaxiality --- creep grain boundary --- grain boundary cavitation --- cavitation --- solute atom --- stress exponent --- external pressure --- P92 --- TMA --- low cycle fatigue --- nanoindentation --- high temperature --- FEM --- intrinsic ductility --- normalizing --- creep ductility --- creep rupture mechanism --- microstructural features --- simulate HAZ --- P92 steel --- glide --- ferritic–martensitic steel --- creep rupture --- cyclic softening