Effects of Ru on elemental partitioning and precipitation of topologically close-packed phases in Ni-based superalloys
Abstract
Two Ni-based superalloys (one Ru-free and one containing 1 at.% Ru) were comparatively studied by Atom Probe Tomography and complimentary techniques. Ru addition impedes precipitation of the σ phase at 950 °C. Ru partitions nearly equally to the γ and σ phase. Neither reverse elemental partitioning nor destabilization of the γ′ phase is detected when adding Ru. We propose an increase in the γ/σ lattice misfit caused by Ru as a major reason for...
Paper Details
Title
Effects of Ru on elemental partitioning and precipitation of topologically close-packed phases in Ni-based superalloys
Published Date
May 1, 2015
Journal
Volume
101
Pages
44 - 47
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