Mechanical properties of bulk nanocrystalline aluminum-tungsten alloys
Mechanical properties of bulk nanocrystalline aluminum-tungsten alloys
The Al-W alloy powders containing up to 4 at. pct W particles in a nanocrystalline Al matrix were synthesized by ball milling and then hot compacted (HC) at 573 K or cold compacted using high-pressure torsion (HPT). Hardness measurements were made to determine the effects on mechanical properties. Based on existing models, the hardening effect of W particles in HC samples was attributed to Orowan-particle strengthening. Composite-type strengthening due to large W particles appeared to be negligible. Both the compressive strain and shear strain in high pressure torsion added to the strengthening effects without producing a change in the grain size.
2528-2534
Rajulapati, K.V.
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Scattergood, R.O.
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Murty, K.L.
5880dea4-b510-49ea-8c6d-f83d2720bbb7
Horita, Z.
84a80017-cbaf-4713-8346-6f69ac7ea63e
Langdon, T.G.
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Koch, C.C.
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October 2008
Rajulapati, K.V.
3b665785-4b7a-493c-9a80-d3df77d50a92
Scattergood, R.O.
4e3a3f9e-7e85-4e34-8a36-b2b1aa224366
Murty, K.L.
5880dea4-b510-49ea-8c6d-f83d2720bbb7
Horita, Z.
84a80017-cbaf-4713-8346-6f69ac7ea63e
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Koch, C.C.
d86cb0e7-cddf-4c51-b662-17b436b61ab1
Rajulapati, K.V., Scattergood, R.O., Murty, K.L., Horita, Z., Langdon, T.G. and Koch, C.C.
(2008)
Mechanical properties of bulk nanocrystalline aluminum-tungsten alloys.
Metallurgical and Materials Transactions A, 39 (10), .
(doi:10.1007/s11661-008-9593-3).
Abstract
The Al-W alloy powders containing up to 4 at. pct W particles in a nanocrystalline Al matrix were synthesized by ball milling and then hot compacted (HC) at 573 K or cold compacted using high-pressure torsion (HPT). Hardness measurements were made to determine the effects on mechanical properties. Based on existing models, the hardening effect of W particles in HC samples was attributed to Orowan-particle strengthening. Composite-type strengthening due to large W particles appeared to be negligible. Both the compressive strain and shear strain in high pressure torsion added to the strengthening effects without producing a change in the grain size.
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Published date: October 2008
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 64351
URI: http://eprints.soton.ac.uk/id/eprint/64351
ISSN: 1073-5623
PURE UUID: 439f7be8-ff20-4373-bbec-966e6ff67ada
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Date deposited: 06 Jan 2009
Last modified: 16 Mar 2024 03:28
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Contributors
Author:
K.V. Rajulapati
Author:
R.O. Scattergood
Author:
K.L. Murty
Author:
Z. Horita
Author:
C.C. Koch
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