Elemental partitioning and site-occupancy in gamma/gamma ' forming Co-Ti-Mo and Co-Ti-Cr alloys

Cited 5 time in webofscience Cited 0 time in scopus
  • Hit : 92
  • Download : 0
We report on the sub-nanometer scale characterization of Co-12Ti-4Mo and Co-12Ti-4Cr (at.%) model alloys. Atom probe tomography reveals that Co and Cr partition to gamma, whereas Ti and Mo to gamma'. Additions of Mo and Cr to the reference Co-12Ti system lead to strong increases in gamma' volume fraction by about 25% and 12%, respectively. Element-specific spatial distribution maps along the [001] direction of the L1(2)-ordered gamma' phase reveal that both Mo and Cr preferentially replace Ti on its sublattice. The remaining excess Ti is available for formation of additional gamma', resulting in enhanced gamma' volume fractions. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2018-09
Language
English
Article Type
Article
Keywords

ATOM-PROBE TOMOGRAPHY; HIGH-TEMPERATURE ALLOYS; BASE SUPERALLOYS; MECHANICAL-PROPERTIES; LATTICE MISFIT; COBALT; CO3TI; TA; PHASE; SYSTEM

Citation

SCRIPTA MATERIALIA, v.154, pp.159 - 162

ISSN
1359-6462
DOI
10.1016/j.scriptamat.2018.05.041
URI
http://hdl.handle.net/10203/245560
Appears in Collection
MS-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 5 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0