Investigation of the Superlattice Phases Formed in Ta72Ru28

Autor:	Alexander W. Carruthers, Bradley A. Young, Ed J. Pickering
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	tantalum refractory superalloy ruthenium coherent intermetalics Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Zdroj:	Materials, Vol 16, Iss 2, p 720 (2023)
Druh dokumentu:	article
ISSN:	1996-1944
DOI:	10.3390/ma16020720
Popis:	The Ta-Ru binary phase diagram has not been fully investigated, but shows potential for a two-phase region of A2 + B2. Given the high melting points of both Ta and Ru, such an alloy would have the potential for high temperature strength. A Ta72Ru28 alloy was arc melted and investigated in the as-cast and aged (at 1000 °C) states. The as cast alloy was composed of A2 and B2, albeit not in a superalloy-like morphology. A third phase was found in the aged alloy, which has not been reported before, and which is also a coherent superlattice phase of the Ta BCC matrix. The structure of this phase was found to be consistent with the tetragonal Cr2Al prototype structure, with lattice parameters of (a, a, 3a), where a is the Ta BCC lattice parameter.
Databáze:	Directory of Open Access Journals
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