Laves phase intermetallic matrix composite in situ toughened by ductile precipitates
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
Laves phase based materials are of interest for elevated temperature applications for their high melting points and strengths but are critically limited by their low fracture toughness. Here, a Laves phase intermetallic matrix composite toughened by ductile precipitates has been studied. This microstructure was produced in situ by heat treating a Fe2(Mo,Ti) based alloy to precipitate ∼ 12% volume fraction of fine ∼ 250 nm bcc, A2 (Mo,Ti), phase, with an orientation relationship of . The precipitated A2 phase increased the indentation fracture toughness from 1.1 to 2.2 MPa m1/2 while maintaining a high hardness of HV0.5 = 8.9 GPa similar to monolithic Laves phases.
Date Issued
2017-07-14
Date Acceptance
2017-06-23
Citation
Scripta Materialia, 2017, 140, pp.59-62
ISSN
1872-8456
Publisher
Elsevier
Start Page
59
End Page
62
Journal / Book Title
Scripta Materialia
Volume
140
Copyright Statement
Crown Copyright © 2017 Published by Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (E
Grant Number
RG75356
138874
N/A
Subjects
0912 Materials Engineering
0913 Mechanical Engineering
Materials
Publication Status
Published