Small-Angle Neutron Scattering Study of Phase Decomposition in Fe–Cu Binary Alloy
- 1 January 1993
- journal article
- Published by Japan Institute of Metals in Materials Transactions, JIM
- Vol. 34 (4), 305-311
- https://doi.org/10.2320/matertrans1989.34.305
Abstract
Small-angle neutron scattering (SANS) measurements were carried out in order to investigate the structure change during early stage of phase decomposition in an Fe-1.17 at% Cu alloy. The integrated intensity first increased and then saturated beyond 2·104 s aging at 773 K, while the Guinier radius increased with the time exponent of 1/3, emphasizing the coarsening process of precipitates. The peak hardness was observed, when the Guinier radius reached 2.8 nm. The intensity ratio of magnetic scattering component to nuclear one has been analyzed in terms of chemical composition and internal structure of precipitates. Its change during aging was concluded to relate that bcc copper-rich clusters decomposed from the supersaturated α Fe phase transform mainly to the ε Cu phase.Keywords
This publication has 9 references indexed in Scilit:
- Transmission electron microscope investigations of the structure of copper precipitates in thermally-aged Fe—Cu and Fe—Cu—NiPhilosophical Magazine Letters, 1991
- Dynamics of fluctuations in ostwald ripeningPhysica A: Statistical Mechanics and its Applications, 1987
- A study of the precipitation of copper particles in a ferrite matrixJournal of Nuclear Materials, 1987
- An FIM-atom probe study of the precipitation of copper from lron-1.4 at. pct copper. Part II: Atom probe analysesMetallurgical Transactions, 1973
- An FIM-atom probe study of the precipitation of copper from lron-1.4 at. pct copper. Part I: Field-ion microscopyMetallurgical Transactions, 1973
- A Study of the Precipitation of Copper from α-Iron in the Pre-Peak to Peak Hardness Range of AgeingMetal Science Journal, 1972
- The role of strain energy during precipitation of copper and gold from alpha ironActa Metallurgica, 1962
- The kinetics of precipitation from supersaturated solid solutionsJournal of Physics and Chemistry of Solids, 1961
- Einfluß von Abschreckspannungen auf die Änderung der Gitterkonstanten bei der Aushärtung von Eisen‐Kupfer‐LegierungenArchiv für das Eisenhüttenwesen, 1958