منابع مشابه
transformation in metastable Fe - Mn alloys
Metastable Fe-Mn alloys exhibit a non-thermoelastic martensitic transformation which is accompanied by a significant thermal effect (ca. 20 J/g). Among Fe-Mn alloys, the highest value of latent heat was registered in alloys with 17-18 wt. % Mn. In this work we investigate effects of carbon (up to 0.4 wt. %) and cold rolling (5-25% of thickness reduction) on the latent heat and the temperature h...
متن کاملSurfactant-mediated epitaxy of metastable SnGe alloys
An effective method for molecular beam epitaxial construction of metastable, pseudomorphic SnGe/ Ge~001! heterostructures is presented. This method exploits a surfactant species, Bi, to alter Sn surface-segregation kinetics. Using the x-ray standing wave technique, we demonstrate not only that Bi segregates to the growth surface more strongly than Sn, but that it also dramatically suppresses th...
متن کاملPoint defect concentrations in metastable Fe-C alloys.
Point defect species and concentrations in metastable Fe-C alloys are determined using density functional theory and a constrained free-energy functional. Carbon interstitials dominate unless iron vacancies are in significant excess, whereas excess carbon causes greatly enhanced vacancy concentration. Our predictions are amenable to experimental verification; they provide a baseline for rationa...
متن کاملOxidation Processes and Phase Changes in Metastable Al–Mg Alloys
Oxidation behavior of metastable mechanical alloys in the Al–Mg binary system has been examined in the context of high-energy density materials and combustion applications. Mechanical alloy powders with compositions ranging from Al0.95Mg0.05 to Al0.5Mg0.5, as well as the component metals, were heated at 20 K/min in oxygen. Differential thermal analysis and thermogravimetric analysis showed that...
متن کاملMicrocalorimetry on Metastable Beta Phase Alloys Subjected to Applied Stress
The development of a High Sensitivity Scanning Stress Microcalorimeter for the study of martensitic phase transformations in beta phase CuAlNi single crystal tensile specimens is described. The design of this system is discussed with reference to an earlier version. The values of calorimetric sensitivity reported for the new system represent a significant improvement over the prototype and a co...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Iron and Steel Research International
سال: 2018
ISSN: 1006-706X,2210-3988
DOI: 10.1007/s42243-018-0040-4