This open access book features an in-depth exploration of the intricate creep behavior
exhibited by metallic materials with a specific focus on elucidating the underlying mechanical
properties governing their response at elevated temperatures particularly in the context of
polycrystalline alloys. Traditional approaches to characterizing mechanical properties have
historically relied upon empirical models replete with numerous adjustable parameters
painstakingly tuned to match experimental data. While these methods offer practical simplicity
they often yield outcomes that defy meaningful extrapolation and application to novel systems
invariably necessitating the recalibration of parameters afresh. In stark contrast this book
compiles a compendium of models sourced from the scientific literature meticulously crafted
through ab initio methodologies rooted in fundamental physical principles. Notably these
models stand apart by their conspicuous absence of adjustable parameters. This pioneering
effort is envisioned as a groundbreaking initiative marking the first of its kind in the
field. The resulting models bereft of arbitrary tuning offer a level of predictability
hitherto unattained. Notably they provide a secure foundation for ascertaining operational
mechanisms contributing significantly to enhancing our understanding of material behavior in
high-temperature environments. This open access book is a valuable resource for researchers and
seasoned students engaged in the study of creep phenomena in metallic materials. Readers will
find a comprehensive exposition of these novel parameter-free models facilitating a deeper
comprehension of the intricate mechanics governing material deformation at elevated
temperatures.
