Formation of laves phase in a refractory austenitic steel due to long-term heating

Autor:	L. V. Tarasenko, A. B. Shal’kevich
Rok vydání:	2011
Předmět:	Austenite Materials science Creep Impact toughness Mechanics of Materials Metallurgy Metals and Alloys Hardening (metallurgy) Intermetallic Laves phase Condensed Matter Physics Phase analysis Chemical composition
Zdroj:	Metal Science and Heat Treatment. 53:123-126
ISSN:	1573-8973 0026-0673
DOI:	10.1007/s11041-011-9353-7
Popis:	Steels of the Fe – Cr – Ni –Mo – Nb – Al – C system are studied by methods of phase physicochemical analysis and electron microscopy with the aim to determine the causes of changes in mechanical properties after long-term heating at a temperature of 600 – 700°C. Grain-boundary formation of particles of a Laves phase is shown to cause decrease in the impact toughness and transformation of particles of γ′-phase under conditions of creep. The effect of alloying elements on the chemical composition of the multicomponent Laves phase is studied depending on the temperatures of hardening, aging, and subsequent heating. Concentration correspondence between the chemical composition of the austenite and the intermetallic tcp phase formed in aging is discovered. A computational scheme for predicting the possibility of formation of Laves phases in multicomponent alloys is suggested.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::324ca97957d49219a6b681879e4decb5 https://doi.org/10.1007/s11041-011-9353-7 Zobrazit plný text záznamu Plný text ve formátu PDF