Published May 2015 | Version v1
Journal article Metadata-only

Effects of Ru on elemental partitioning and precipitation of topologically close-packed phases in Ni-based superalloys

Creators

  • 1. Max-Planck-Institut für Eisenforschung, Department of Microstructure Physics and Alloy Design, Max-Planck-Str. 1, 40237 Düsseldorf (Germany)
  • 2. University of Erlangen-Nuremberg FAU, Department of Materials Science and Engineering, Institute of Science and Technology of Metals WTM, Martensstr. 5, 91058 Erlangen (Germany)

Description

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 impeded nucleation of the σ phase

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2015.01.014

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2015.01.014;
PII
S1359-6462(15)00028-7;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
101
Journal Page Range
p. 44-47
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47041163
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ATOMS; CRYSTAL LATTICES; HEAT RESISTING ALLOYS; NICKEL BASE ALLOYS; NUCLEATION; PARTITION; PRECIPITATION; PROBES; RUTHENIUM ADDITIONS; TOMOGRAPHY; TOPOLOGY
Descriptors DEC
ALLOYS; CRYSTAL STRUCTURE; DIAGNOSTIC TECHNIQUES; HEAT RESISTANT MATERIALS; MATERIALS; MATHEMATICS; NICKEL ALLOYS; PLATINUM METAL ALLOYS; RUTHENIUM ALLOYS; SEPARATION PROCESSES; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.