Formation of voids and secondary-phase precipitates in the Fe-16Cr-15Ni-2Mo-1Mn-Ti-Si steel under high-doze neutron irradiation and during post-irradiation annealing

Autor:	I. A. Portnykh, A. V. Kozlov, O. I. Asiptsov, E. N. Shcherbakov
Rok vydání:	2009
Předmět:	Austenite Materials science Precipitation (chemistry) Annealing (metallurgy) Analytical chemistry General Chemistry Atmospheric temperature range Condensed Matter Physics Dissociation (chemistry) Crystallography Volume fraction General Materials Science Irradiation Thermal analysis
Zdroj:	Crystallography Reports. 54:1139-1145
ISSN:	1562-689X 1063-7745
DOI:	10.1134/s1063774509070050
Popis:	The effect of high-dose neutron irradiation on the structural changes in Fe-16Cr-15Ni-2Mo-1Mn-Ti-Si austenitic steel have been investigated. Samples irradiated at temperatures of 390, 500, and 600° to damage doses of 46, 86, and 46 dpa, respectively, were analyzed by electron microscopy and dilatometry. The quantitative characteristics of radiation voids and secondary-phase precipitates formed under neutron irradiation are obtained. Their behavior upon heating to 700°C and annealing at this temperature for 2 h is studied. It is shown that annealing leads to the dissociation of small voids, which is accompanied by the growth of large ones. The secondary-phase precipitates are partially dissolved upon annealing, and their volume fraction decreases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::067f9ff63c764b2a9119c140ad0fa559 https://doi.org/10.1134/s1063774509070050 Zobrazit plný text záznamu Plný text ve formátu PDF