Fracture behaviour and microstructure of MoSi2 reinforced with ductile ellipsoidal Nb particles
Fracture behaviour and microstructure of MoSi2 reinforced with ductile ellipsoidal Nb particles
A MoSi2/Nb composite with ellipsoidal reinforcements has been produced by uniaxial forging of a sample manufactured by hot isostatic pressing (HIP). The final aspect ratio of the reinforcing Nb particles as a function of strain has been predicted. Reaction products at the interface have been identified by means of energy dispersive X-ray analysis, electron diffraction, high resolution electron microscopy and image simulations. Substantial improvements have been obtained in the fracture toughness compared to the unreinforced matrix and MoSi2 reinforced with identical volume fraction of spherical Nb reinforcements. The increase has been interpreted on the basis of a reduced number of particles that totally debond.
4160-4166
Besson, J.
28b6e82d-9e34-409e-b771-d6a8f7d9b749
De Graef, M.
d3ee6cb3-132b-47aa-a45f-8b4f2dc23dae
Löfvander, J.
129b729a-0700-425a-a186-25a6b112fec2
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
1992
Besson, J.
28b6e82d-9e34-409e-b771-d6a8f7d9b749
De Graef, M.
d3ee6cb3-132b-47aa-a45f-8b4f2dc23dae
Löfvander, J.
129b729a-0700-425a-a186-25a6b112fec2
Spearing, S.M.
9e56a7b3-e0e8-47b1-a6b4-db676ed3c17a
Besson, J., De Graef, M., Löfvander, J. and Spearing, S.M.
(1992)
Fracture behaviour and microstructure of MoSi2 reinforced with ductile ellipsoidal Nb particles.
Journal of Materials Science, 27 (15), .
(doi:10.1007/BF01105120).
Abstract
A MoSi2/Nb composite with ellipsoidal reinforcements has been produced by uniaxial forging of a sample manufactured by hot isostatic pressing (HIP). The final aspect ratio of the reinforcing Nb particles as a function of strain has been predicted. Reaction products at the interface have been identified by means of energy dispersive X-ray analysis, electron diffraction, high resolution electron microscopy and image simulations. Substantial improvements have been obtained in the fracture toughness compared to the unreinforced matrix and MoSi2 reinforced with identical volume fraction of spherical Nb reinforcements. The increase has been interpreted on the basis of a reduced number of particles that totally debond.
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Published date: 1992
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Local EPrints ID: 22858
URI: http://eprints.soton.ac.uk/id/eprint/22858
ISSN: 0022-2461
PURE UUID: 3284d5a0-3131-40be-b1a8-9e8bb97f0002
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Date deposited: 30 Jan 2007
Last modified: 16 Mar 2024 03:37
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Author:
J. Besson
Author:
M. De Graef
Author:
J. Löfvander
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