Veröffentlichungen
Home
Dr. V. Prieb
Publikationen
Erfahrungen
Konsultationen
Forschungsprojekte
Entwicklung
Knowhow-Transfer
Materialmuster
Fachseminare
Fachrecherchen
Betreuung
Kooperationspartner
Auftrag
Rechtsvorbehalte
Kontakt
|
Thermoelasticity and hysteresis of martensitic transformations in shape memory alloys. I. Hysteresis of the stress-free thermal transformation V. Prieb "1st Memory Alloys GmbH", Berlin, Germany Abstract: Calorimetric studies of the hysteresis of thermoelastic martensitic transformations in single- and poly-crystals of shape memory alloys Cu-Al-X (X=Zn, Ni, Mn), NiTi, and Mn-Cu are carried out. The equilibrium lines inside of hysteresis loop was found and investigated by partial cycling, which represents a latent internal hysteresis. The dependence of total energy dissipated in a closed cycle on the martensitic phase fraction as wekk as an energetically thermoelasticity coefficient are determined and calculated. . The influence of the scanning rate and the influence of the grain boundaries on the internal hysteresis and coefficient of thermoelasticity are also investigated, and the interrelationship between thermoelasticity and hysteresis is discussed. More about this in my monograph, published in November 2020: "The concept of dual-energetic martensite (CODEM) for shape memory phenomena", PDF-file |