Microstructural investigation of Cr–Hf–Si alloys

Autor:	Bernard Patrick Bewlay, D. Dalpe, Y. A. Chang, A Deal, Daniel Lewis, J. Schoonover, James R. Cournoyer, Ying Yang, W Heward, M. Othon
Rok vydání:	2008
Předmět:	Ternary numeral system Materials science Mechanical Engineering Metallurgy Metals and Alloys Analytical chemistry General Chemistry Liquidus Ternary phase Microstructure Mechanics of Materials Ternary eutectic Materials Chemistry CALPHAD
Zdroj:	Intermetallics. 16:1109-1117
ISSN:	0966-9795
Popis:	Cr–Hf–Si alloys with Si concentrations up to 40 at.% were fabricated in order to study solidification microstructures in the metal-rich end of the Cr–Hf–Si ternary system. The microstructures were compared with a liquidus projection that was calculated from the extrapolated Cr–Hf–Si thermodynamic description using the CALPHAD approach. Two ternary eutectic reactions were found: L → Cr2Hf (HT) + Hf2Si + β-(Hf) at approximately Hf–33Cr–3Si and L → Cr3Si + (Cr) + Cr2Hf (HT) at approximately Hf–73Cr–9Si. The ternary phase CrHfSi was also seen. The experimental data agreed with the Hf-rich end of the calculated liquidus projection, and it was suggested how the Cr-rich end could be adjusted to account for the experimental results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::511805663930d31b7becc169f24b4adb https://doi.org/10.1016/j.intermet.2008.06.012 Zobrazit plný text záznamu Full Text from ScienceDirect